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At least 865 records · Page 48
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on BaNd2Cu(MoO4)4 by Materials Project

BaNd2Cu(MoO4)4 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Ba2+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Ba–O bond distances ranging from 2.75–3.06 Å. Nd3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Nd–O bond distances ranging from 2.44–2.56 Å. There are two inequivalent Mo+5.75+ sites. In the first Mo+5.75+ site, Mo+5.75+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Mo–O bond distances ranging from 1.84–1.89 Å. In the second Mo+5.75+ site, Mo+5.75+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Mo–O bond distances ranging from 1.78–1.84 Å. Cu1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Cu–O bond distances ranging from 2.03–2.50 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to one Ba2+, one Nd3+, and one Mo+5.75+ atom. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Nd3+ and one Mo+5.75+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Nd3+ and one Mo+5.75+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one Ba2+, one Mo+5.75+, and one Cu1+ atom. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Nd3+ and one Mo+5.75+ atom. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to one Ba2+, one Mo+5.75+, and one Cu1+ atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+, one Mo+5.75+, and one Cu1+ atom. In the eighth O2- site, O2- is bonded in a 1-coordinate geometry to one Ba2+, one Nd3+, and one Mo+5.75+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LiIn(MoSe)6 by Materials Project

LiIn(MoSe)6 crystallizes in the hexagonal P-6 space group. The structure is three-dimensional. Li is bonded in a trigonal planar geometry to three equivalent Se atoms. All Li–Se bond lengths are 2.80 Å. There are two inequivalent Mo sites. In the first Mo site, Mo is bonded in a distorted see-saw-like geometry to six Mo and four Se atoms. There are a spread of Mo–Mo bond distances ranging from 2.67–2.75 Å. There are a spread of Mo–Se bond distances ranging from 2.63–2.70 Å. In the second Mo site, Mo is bonded in a distorted see-saw-like geometry to six Mo and four Se atoms. Both Mo–Mo bond lengths are 2.68 Å. There are a spread of Mo–Se bond distances ranging from 2.61–2.73 Å. In is bonded in a trigonal planar geometry to three equivalent Se atoms. All In–Se bond lengths are 2.94 Å. There are two inequivalent Se sites. In the first Se site, Se is bonded in a 1-coordinate geometry to one Li and four Mo atoms. In the second Se site, Se is bonded in a 5-coordinate geometry to four Mo and one In atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NiMo4O15 by Materials Project

Mo4NiO15 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are two inequivalent Mo sites. In the first Mo site, Mo is bonded in a 6-coordinate geometry to six O atoms. There are a spread of Mo–O bond distances ranging from 1.75–2.29 Å. In the second Mo site, Mo is bonded in a 6-coordinate geometry to six O atoms. There are a spread of Mo–O bond distances ranging from 1.78–2.22 Å. Ni is bonded in an octahedral geometry to six O atoms. There are four shorter (2.03 Å) and two longer (2.06 Å) Ni–O bond lengths. There are eight inequivalent O sites. In the first O site, O is bonded in a linear geometry to one Mo and one Ni atom. In the second O site, O is bonded in a linear geometry to one Mo and one Ni atom. In the third O site, O is bonded in a linear geometry to two equivalent Mo atoms. In the fourth O site, O is bonded in a bent 120 degrees geometry to two Mo atoms. In the fifth O site, O is bonded in a distorted T-shaped geometry to three Mo atoms. In the sixth O site, O is bonded in a linear geometry to two Mo atoms. In the seventh O site, O is bonded in a linear geometry to one Mo and one Ni atom. In the eighth O site, O is bonded in a single-bond geometry to one Mo atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Hg(MoS2)6 by Materials Project

Hg(MoS2)6 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of one mercury molecule and four MoS2 clusters. In two of the MoS2 clusters, Mo+3.67+ is bonded in a 1-coordinate geometry to two S2- atoms. Both Mo–S bond lengths are 2.32 Å. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a distorted single-bond geometry to one Mo+3.67+ and one S2- atom. The S–S bond length is 2.08 Å. In the second S2- site, S2- is bonded in a 1-coordinate geometry to one Mo+3.67+ and one S2- atom. In two of the MoS2 clusters, there are two inequivalent Mo+3.67+ sites. In the first Mo+3.67+ site, Mo+3.67+ is bonded in a 1-coordinate geometry to two S2- atoms. Both Mo–S bond lengths are 2.32 Å. In the second Mo+3.67+ site, Mo+3.67+ is bonded in a 1-coordinate geometry to two S2- atoms. There are one shorter (2.31 Å) and one longer (2.32 Å) Mo–S bond lengths. There are four inequivalent S2- sites. In the first S2- site, S2- is bonded in a 2-coordinate geometry to one Mo+3.67+ and one S2- atom. The S–S bond length is 2.08 Å. In the second S2- site, S2- is bonded in a 1-coordinate geometry to one Mo+3.67+ and one S2- atom. The S–S bond length is 2.08 Å. In the third S2- site, S2- is bonded in a distorted single-bond geometry to one Mo+3.67+ and two S2- atoms. The S–S bond length is 4.07 Å. In the fourth S2- site, S2- is bonded in a distorted single-bond geometry to one Mo+3.67+ and two S2- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ba(TeMo)6 by Materials Project

BaMo6Te6 crystallizes in the hexagonal P-6 space group. The structure is three-dimensional. Ba is bonded in a 9-coordinate geometry to nine Te atoms. There are six shorter (3.58 Å) and three longer (3.73 Å) Ba–Te bond lengths. There are two inequivalent Mo sites. In the first Mo site, Mo is bonded in a 10-coordinate geometry to six Mo and four Te atoms. There are a spread of Mo–Mo bond distances ranging from 2.68–2.79 Å. There are a spread of Mo–Te bond distances ranging from 2.83–2.89 Å. In the second Mo site, Mo is bonded in a 10-coordinate geometry to six Mo and four Te atoms. Both Mo–Mo bond lengths are 2.66 Å. There are a spread of Mo–Te bond distances ranging from 2.83–2.90 Å. There are two inequivalent Te sites. In the first Te site, Te is bonded in a 6-coordinate geometry to two equivalent Ba and four Mo atoms. In the second Te site, Te is bonded in a 5-coordinate geometry to one Ba and four Mo atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe(MoO5)2 by Materials Project

Fe(MoO5)2 crystallizes in the triclinic P-1 space group. The structure is one-dimensional and consists of one Fe(MoO5)2 ribbon oriented in the (0, 1, 0) direction. there are two inequivalent Mo sites. In the first Mo site, Mo is bonded to four O atoms to form MoO4 tetrahedra that share corners with two equivalent FeO6 octahedra. The corner-sharing octahedra tilt angles range from 13–33°. There are a spread of Mo–O bond distances ranging from 1.72–1.94 Å. In the second Mo site, Mo is bonded in a 5-coordinate geometry to five O atoms. There are a spread of Mo–O bond distances ranging from 1.70–2.15 Å. Fe is bonded to six O atoms to form distorted FeO6 octahedra that share corners with two equivalent MoO4 tetrahedra and an edgeedge with one FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 1.85–2.21 Å. There are ten inequivalent O sites. In the first O site, O is bonded in a water-like geometry to two equivalent Fe atoms. In the second O site, O is bonded in a single-bond geometry to one Fe atom. In the third O site, O is bonded in a bent 150 degrees geometry to one Mo and one Fe atom. In the fourth O site, O is bonded in a single-bond geometry to one Mo atom. In the fifth O site, O is bonded in a linear geometry to one Mo and one Fe atom. In the sixth O site, O is bonded in a bent 150 degrees geometry to two Mo atoms. In the seventh O site, O is bonded in a 2-coordinate geometry to one Mo and one O atom. The O–O bond length is 1.37 Å. In the eighth O site, O is bonded in a distorted L-shaped geometry to one Mo and one O atom. In the ninth O site, O is bonded in a bent 150 degrees geometry to one Mo and one Fe atom. In the tenth O site, O is bonded in a single-bond geometry to one Mo atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Mo15Pb2Se19 by Materials Project

Mo15Pb2Se19 crystallizes in the trigonal R-3c space group. The structure is three-dimensional. there are three inequivalent Mo+2.27+ sites. In the first Mo+2.27+ site, Mo+2.27+ is bonded to five Se2- atoms to form a mixture of corner and edge-sharing MoSe5 square pyramids. There are a spread of Mo–Se bond distances ranging from 2.57–2.66 Å. In the second Mo+2.27+ site, Mo+2.27+ is bonded to five Se2- atoms to form a mixture of corner and edge-sharing MoSe5 square pyramids. There are a spread of Mo–Se bond distances ranging from 2.56–2.73 Å. In the third Mo+2.27+ site, Mo+2.27+ is bonded in a see-saw-like geometry to four Se2- atoms. There are two shorter (2.57 Å) and two longer (2.62 Å) Mo–Se bond lengths. Pb2+ is bonded in a 5-coordinate geometry to five Se2- atoms. There are a spread of Pb–Se bond distances ranging from 3.14–3.51 Å. There are five inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 7-coordinate geometry to three equivalent Mo+2.27+ and one Pb2+ atom. In the second Se2- site, Se2- is bonded in a 4-coordinate geometry to four Mo+2.27+ atoms. In the third Se2- site, Se2- is bonded in a 7-coordinate geometry to three equivalent Mo+2.27+ and one Pb2+ atom. In the fourth Se2- site, Se2- is bonded in a 5-coordinate geometry to four Mo+2.27+ and one Pb2+ atom. In the fifth Se2- site, Se2- is bonded in a 4-coordinate geometry to four Mo+2.27+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr2Ca49Mo12N56O3 by Materials Project

Sr2Ca49Mo12N56O3 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. Sr is bonded in a 8-coordinate geometry to six N and two O atoms. There are a spread of Sr–N bond distances ranging from 2.65–3.08 Å. There are one shorter (2.63 Å) and one longer (2.73 Å) Sr–O bond lengths. There are twenty-five inequivalent Ca sites. In the first Ca site, Ca is bonded to six N atoms to form distorted CaN6 octahedra that share corners with two CaN6 octahedra, a cornercorner with one MoN4 tetrahedra, edges with six CaN6 octahedra, an edgeedge with one CaN5 square pyramid, and edges with two MoN4 tetrahedra. The corner-sharing octahedra tilt angles range from 11–12°. There are a spread of Ca–N bond distances ranging from 2.33–2.93 Å. In the second Ca site, Ca is bonded to six N atoms to form distorted CaN6 octahedra that share corners with three CaN6 octahedra, corners with two CaN5 square pyramids, a cornercorner with one MoN4 tetrahedra, edges with eight CaN6 octahedra, and edges with two MoN4 tetrahedra. The corner-sharing octahedra tilt angles range from 7–10°. There are a spread of Ca–N bond distances ranging from 2.40–2.71 Å. In the third Ca site, Ca is bonded to six N atoms to form CaN6 octahedra that share a cornercorner with one CaN5O octahedra, a cornercorner with one CaN4O square pyramid, corners with two MoN4 tetrahedra, edges with six CaN6 octahedra, edges with three CaN5 square pyramids, and an edgeedge with one MoN4 tetrahedra. The corner-sharing octahedral tilt angles are 3°. There are a spread of Ca–N bond distances ranging from 2.37–2.66 Å. In the fourth Ca site, Ca is bonded to five N atoms to form distorted CaN5 square pyramids that share corners with three CaN6 octahedra, corners with two MoN4 tetrahedra, a cornercorner with one CaN5 trigonal bipyramid, edges with four CaN6 octahedra, an edgeedge with one CaN4O square pyramid, an edgeedge with one MoN4 tetrahedra, and an edgeedge with one CaN5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 3–11°. There are a spread of Ca–N bond distances ranging from 2.34–2.83 Å. In the fifth Ca site, Ca is bonded in a 6-coordinate geometry to five N and one O atom. There are a spread of Ca–N bond distances ranging from 2.47–2.97 Å. The Ca–O bond length is 2.41 Å. In the sixth Ca site, Ca is bonded in a 5-coordinate geometry to four N and one O atom. There are a spread of Ca–N bond distances ranging from 2.36–2.45 Å. The Ca–O bond length is 2.73 Å. In the seventh Ca site, Ca is bonded in a 6-coordinate geometry to six N atoms. There are a spread of Ca–N bond distances ranging from 2.36–2.99 Å. In the eighth Ca site, Ca is bonded to four N and one O atom to form CaN4O square pyramids that share corners with two CaN6 octahedra, corners with four MoN4 tetrahedra, a cornercorner with one CaN5 trigonal bipyramid, edges with four CaN6 octahedra, and edges with two CaN5 square pyramids. The corner-sharing octahedra tilt angles range from 11–12°. There are a spread of Ca–N bond distances ranging from 2.49–2.79 Å. The Ca–O bond length is 2.32 Å. In the ninth Ca site, Ca is bonded to six N atoms to form distorted CaN6 octahedra that share corners with three CaN6 octahedra, corners with two CaN5 square pyramids, corners with two MoN4 tetrahedra, a cornercorner with one CaN5 trigonal bipyramid, edges with three CaN6 octahedra, edges with two CaN5 square pyramids, edges with two MoN4 tetrahedra, and an edgeedge with one CaN5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 11–39°. There are a spread of Ca–N bond distances ranging from 2.45–2.69 Å. In the tenth Ca site, Ca is bonded to six N atoms to form distorted CaN6 octahedra that share corners with four CaN6 octahedra, corners with two CaN5 square pyramids, a cornercorner with one MoN4 tetrahedra, edges with six CaN6 octahedra, and edges with two MoN4 tetrahedra. The corner-sharing octahedra tilt angles range from 12–25°. There are a spread of Ca–N bond distances ranging from 2.40–2.85 Å. In the eleventh Ca site, Ca is bonded to six N atoms to form distorted CaN6 octahedra that share corners with three CaN6 octahedra, corners with two equivalent CaN5 square pyramids, a cornercorner with one MoN4 tetrahedra, edges with seven CaN6 octahedra, and edges with two MoN4 tetrahedra. The corner-sharing octahedra tilt angles range from 8–24°. There are a spread of Ca–N bond distances ranging from 2.39–2.88 Å. In the twelfth Ca site, Ca is bonded to six N atoms to form distorted CaN6 octahedra that share a cornercorner with one CaN6 octahedra, corners with three CaN5 square pyramids, a cornercorner with one MoN4 tetrahedra, edges with seven CaN6 octahedra, an edgeedge with one CaN5 square pyramid, and edges with two equivalent MoN4 tetrahedra. The corner-sharing octahedral tilt angles are 11°. There are a spread of Ca–N bond distances ranging from 2.36–2.75 Å. In the thirteenth Ca site, Ca is bonded to six N atoms to form distorted CaN6 octahedra that share corners with four CaN6 octahedra, a cornercorner with one CaN5 square pyramid, a cornercorner with one MoN4 tetrahedra, edges with three CaN6 octahedra, edges with three CaN5 square pyramids, edges with two MoN4 tetrahedra, and an edgeedge with one CaN5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 4–35°. There are a spread of Ca–N bond distances ranging from 2.36–2.99 Å. In the fourteenth Ca site, Ca is bonded to five N and one O atom to form distorted CaN5O octahedra that share corners with three CaN6 octahedra, a cornercorner with one CaN5 square pyramid, a cornercorner with one MoN4 tetrahedra, edges with five CaN6 octahedra, an edgeedge with one CaN4O square pyramid, and edges with two equivalent MoN4 tetrahedra. The corner-sharing octahedra tilt angles range from 13–44°. There are a spread of Ca–N bond distances ranging from 2.46–2.67 Å. The Ca–O bond length is 2.31 Å. In the fifteenth Ca site, Ca is bonded to five N and one O atom to form distorted CaN5O octahedra that share corners with three CaN5O octahedra, corners with two CaN5 square pyramids, corners with three MoN4 tetrahedra, edges with five CaN6 octahedra, an edgeedge with one CaN4O square pyramid, and an edgeedge with one MoN4 tetrahedra. The corner-sharing octahedra tilt angles range from 9–47°. There are a spread of Ca–N bond distances ranging from 2.43–2.96 Å. The Ca–O bond length is 2.36 Å. In the sixteenth Ca site, Ca is bonded to five N atoms to form distorted CaN5 square pyramids that share corners with six CaN6 octahedra, a cornercorner with one MoN4 tetrahedra, edges with four CaN6 octahedra, edges with two CaN5 square pyramids, and an edgeedge with one MoN4 tetrahedra. The corner-sharing octahedra tilt angles range from 2–90°. There are a spread of Ca–N bond distances ranging from 2.34–2.67 Å. In the seventeenth Ca site, Ca is bonded to five N atoms to form CaN5 square pyramids that share corners with five CaN6 octahedra, corners with three MoN4 tetrahedra, edges with four CaN6 octahedra, and an edgeedge with one CaN5 square pyramid. The corner-sharing octahedra tilt angles range from 1–88°. There are a spread of Ca–N bond distances ranging from 2.47–2.59 Å. In the eighteenth Ca site, Ca is bonded to six N atoms to form CaN6 octahedra that share corners with five CaN6 octahedra, a cornercorner with one CaN4O square pyramid, a cornercorner with one MoN4 tetrahedra, edges with five CaN6 octahedra, edges with two equivalent CaN5 square pyramids, and edges with two MoN4 tetrahedra. The corner-sharing octahedra tilt angles range from 4–50°. There are a spread of Ca–N bond distances ranging from 2.40–2.59 Å. In the nineteenth Ca site, Ca is bonded to six N atoms to form distorted CaN6 octahedra that share a cornercorner with one CaN6 octahedra, a cornercorner with one CaN5 square pyramid, corners with three MoN4 tetrahedra, edges with six CaN6 octahedra, edges with two CaN5 square pyramids, and an edgeedge with one MoN4 tetrahedra. The corner-sharing octahedral tilt angles are 10°. There are a spread of Ca–N bond distances ranging from 2.36–2.76 Å. In the twentieth Ca site, Ca is bonded in a 5-coordinate geometry to five N atoms. There are a spread of Ca–N bond distances ranging from 2.34–3.04 Å. In the twenty-first Ca site, Ca is bonded to four N and one O atom to form distorted CaN4O square pyramids that share corners with four CaN6 octahedra, a cornercorner with one CaN4O square pyramid, corners with four MoN4 tetrahedra, a cornercorner with one CaN5 trigonal bipyramid, and faces with two equivalent CaN5O octahedra. The corner-sharing octahedra tilt angles range from 34–90°. There are a spread of Ca–N bond distances ranging from 2.48–2.71 Å. The Ca–O bond length is 2.26 Å. In the twenty-second Ca site, Ca is bonded in a 6-coordinate geometry to six N atoms. There are a spread of Ca–N bond distances ranging from 2.41–3.02 Å. In the twenty-third Ca site, Ca is bonded to five N and one O atom to form distorted CaN5O octahedra that share corners with four CaN6 octahedra, a cornercorner with one CaN5 square pyramid, corners with four MoN4 tetrahedra, a cornercorner with one CaN5 trigonal bipyramid, edges with two CaN6 octahedra, and faces with two equivalent CaN4O square pyramids. The corner-sharing octahedra tilt angles range from 0–47°. There are a spread of Ca–N bond distances ranging from 2.37–2.66 Å. The Ca–O bond length is 2.30 Å. In the twenty-fourth Ca site, Ca is bonded to five N atoms to form CaN5 trigonal bipyramids that share corners with two CaN5O octahedra, corners with three CaN5 square pyramids, corners with three MoN4 tetrahedra, edges with two CaN6 octahedra, an edgeedge with one CaN5 square pyramid, an edgeedge with one MoN4 tetrahedra, and an edgeedge with one CaN5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 39–46°. There are a spread of Ca–N bond distances ranging from 2.33–2.52 Å. In the twenty-fifth Ca site, Ca is bonded to six N atoms to form CaN6 octahedra that share corners with four CaN6 octahedra, corners with two equivalent CaN5 square pyramids, corners with four MoN4 tetrahedra, and edges with four CaN6 octahedra. The corner-sharing octahedra tilt angles range from 44–50°. There are a spread of Ca–N bond distances ranging from 2.48–2.54 Å. There are six inequivalent Mo sites. In the first Mo site, Mo is bonded to four N atoms to form MoN4 tetrahedra that share corners with four CaN6 octahedra, corners with three CaN5 square pyramids, edges with two CaN6 octahedra, and an edgeedge with one CaN5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 6–83°. There are a spread of Mo–N bond distances ranging from 1.87–1.91 Å. In the second Mo site, Mo is bonded to four N atoms to form MoN4 tetrahedra that share corners with three CaN6 octahedra, corners with three CaN5 square pyramids, and edges with four CaN6 octahedra. The corner-sharing octahedra tilt angles range from 6–62°. There are a spread of Mo–N bond distances ranging from 1.88–1.91 Å. In the third Mo site, Mo is bonded to four N atoms to form MoN4 tetrahedra that share corners with four CaN6 octahedra, corners with three CaN5 square pyramids, a cornercorner with one CaN5 trigonal bipyramid, and edges with four CaN6 octahedra. The corner-sharing octahedra tilt angles range from 8–81°. There are a spread of Mo–N bond distances ranging from 1.87–1.93 Å. In the fourth Mo site, Mo is bonded to four N atoms to form MoN4 tetrahedra that share corners with seven CaN6 octahedra and edges with five CaN6 octahedra. The corner-sharing octahedra tilt angles range from 4–84°. There are a spread of Mo–N bond distances ranging from 1.87–1.91 Å. In the fifth Mo site, Mo is bonded to four N atoms to form MoN4 tetrahedra that share corners with two CaN6 octahedra, corners with four CaN5 square pyramids, corners with two equivalent CaN5 trigonal bipyramids, edges with two CaN6 octahedra, and an edgeedge with one CaN5 square

36 MATERIALS SCIENCE↗
DOE OSTI2023

Molybdenum in basalt-hosted seafloor hydrothermal systems: Experimental, theoretical, and field sampling approaches

Here, seafloor hydrothermal vents represent potential sources of Mo and other biologically relevant transition metals to the global ocean, complementing continental runoff. Here, we use a combination of experimental, theoretical, and field-sampling approaches to investigate the behavior of Mo in basalt-hosted seafloor hydrothermal systems to provide insight into the processes controlling Mo concentrations in hydrothermal fluids and to derive estimates of vent fluid Mo concentrations and fluxes. Results of this study demonstrate that reaction fluids generated from 350°C, 500 bar hydrothermal basalt alteration experiments contain 775–801 nmol/kg Mo and are thus comparable to a recently collected time series of natural seafloor vent fluids that contained 200–220 nmol/kg Mo at 302°C and 29–30 nmol/kg at 281–282°C (Evans et al., 2023). Synchrotron-based analyses of experimentally altered basalt produced in this study and additional natural samples of altered oceanic crust originally collected from Pito Deep Rift reveal the presence of Mo-rich particles consistent with trace molybdenite. Comparisons of Mo:Cu ratios in natural vent fluids and near-vent sediment trap samples from Main Endeavour Field indicate that vent fluid Mo is readily incorporated into buoyant plume particles and advected out of the near-vent field, analogous to previous mass balance studies of Cu in this region. Thermodynamic calculations of molybdenite solubility in the context of mineral-buffered hydrothermal fluids and comparisons with natural and experimental hydrothermal fluids suggest that high-temperature vent fluids contain 30–1500 nmol/kg Mo. While a minor component of the modern Mo budget, hydrothermal Mo fluxes are estimated to have constituted 0.3–200× the contemporaneous continental weathering fluxes prior to the ~2.4 Ga ago “Great Oxidation Event” and widespread oxidative continental weathering. Overall, identification of hydrothermal vents as a source of Mo-rich plume particles with potential for dispersal into the wider marine environment has significant implications for hypotheses regarding the co-evolution of Life and Earth’s environments, specifically the form and availability of Mo in anoxic Archean-Eon oceans, where Mo-dependent enzymatic pathways are thought to have emerged and subsequently evolved.

58 GEOSCIENCES↗
DOE OSTI2021

Anthropogenic Perturbations to the Atmospheric Molybdenum Cycle

Abstract Molybdenum (Mo) is a key cofactor in enzymes used for nitrogen (N) fixation and nitrate reduction, and the low availability of Mo can constrain N inputs, affecting ecosystem productivity. Natural atmospheric Mo aerosolization and deposition from sources such as desert dust, sea‐salt spray, and volcanoes can affect ecosystem function across long timescales, but anthropogenic activities such as combustion, motor vehicles, and agricultural dust have accelerated the natural Mo cycle. Here we combined a synthesis of global atmospheric concentration observations and modeling to identify and estimate anthropogenic sources of atmospheric Mo. To project the impact of atmospheric Mo on terrestrial ecosystems, we synthesized soil Mo data and estimated the global distribution of soil Mo using two approaches to calculate turnover times. We estimated global emissions of atmospheric Mo in aerosols (<10 μm in diameter) to be 23 Gg Mo yr −1 , with 40%–75% from anthropogenic sources. We approximated that for the top meter of soil, Mo turnover times range between 1,000 and 1,000,000 years. In some industrialized regions, anthropogenic inputs have enhanced Mo deposition 100‐fold, lowering the soil Mo turnover time considerably. Our synthesis of global observational data, modeling, and a mass balance comparison with riverine Mo exports suggest that anthropogenic activity has greatly accelerated the Mo cycle, with potential to influence N‐limited ecosystems.

Wong, Michelle Y.↗
DOE OSTI2020

Materials Data on YMo3O8 by Materials Project

YMo3O8 is Hydrophilite-derived structured and crystallizes in the triclinic P-1 space group. The structure is three-dimensional. Y3+ is bonded to six O2- atoms to form YO6 octahedra that share corners with twelve MoO6 octahedra. The corner-sharing octahedra tilt angles range from 50–54°. There are a spread of Y–O bond distances ranging from 2.31–2.36 Å. There are three inequivalent Mo+4.33+ sites. In the first Mo+4.33+ site, Mo+4.33+ is bonded to six O2- atoms to form MoO6 octahedra that share corners with four equivalent YO6 octahedra and edges with four MoO6 octahedra. The corner-sharing octahedral tilt angles are 53°. There are four shorter (2.06 Å) and two longer (2.11 Å) Mo–O bond lengths. In the second Mo+4.33+ site, Mo+4.33+ is bonded to six O2- atoms to form MoO6 octahedra that share corners with four equivalent YO6 octahedra and edges with four MoO6 octahedra. The corner-sharing octahedra tilt angles range from 50–51°. There are a spread of Mo–O bond distances ranging from 1.99–2.04 Å. In the third Mo+4.33+ site, Mo+4.33+ is bonded to six O2- atoms to form MoO6 octahedra that share corners with four equivalent YO6 octahedra and edges with four MoO6 octahedra. The corner-sharing octahedra tilt angles range from 51–54°. There are a spread of Mo–O bond distances ranging from 2.04–2.12 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to one Y3+ and two Mo+4.33+ atoms. In the second O2- site, O2- is bonded in a 3-coordinate geometry to three Mo+4.33+ atoms. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to one Y3+ and two Mo+4.33+ atoms. In the fourth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Y3+ and two Mo+4.33+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Rb3Mo15Se17 by Materials Project

Rb3Mo15Se17 crystallizes in the hexagonal P6_3/m space group. The structure is three-dimensional. there are two inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded in a 9-coordinate geometry to nine Se2- atoms. There are a spread of Rb–Se bond distances ranging from 3.62–3.89 Å. In the second Rb1+ site, Rb1+ is bonded in a 11-coordinate geometry to eleven Se2- atoms. There are a spread of Rb–Se bond distances ranging from 3.62–4.01 Å. There are three inequivalent Mo+2.07+ sites. In the first Mo+2.07+ site, Mo+2.07+ is bonded in a see-saw-like geometry to four Se2- atoms. There are a spread of Mo–Se bond distances ranging from 2.64–2.72 Å. In the second Mo+2.07+ site, Mo+2.07+ is bonded in a see-saw-like geometry to four Se2- atoms. There are a spread of Mo–Se bond distances ranging from 2.59–2.72 Å. In the third Mo+2.07+ site, Mo+2.07+ is bonded to five Se2- atoms to form a mixture of edge and corner-sharing MoSe5 square pyramids. There are a spread of Mo–Se bond distances ranging from 2.55–2.71 Å. There are four inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 6-coordinate geometry to two Rb1+ and four Mo+2.07+ atoms. In the second Se2- site, Se2- is bonded in a 5-coordinate geometry to one Rb1+ and four Mo+2.07+ atoms. In the third Se2- site, Se2- is bonded in a 7-coordinate geometry to one Rb1+ and three equivalent Mo+2.07+ atoms. In the fourth Se2- site, Se2- is bonded in a 7-coordinate geometry to three Rb1+ and four Mo+2.07+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Al4Mo by Materials Project

Al4Mo crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are two inequivalent Mo sites. In the first Mo site, Mo is bonded in a 10-coordinate geometry to ten Al atoms. There are a spread of Mo–Al bond distances ranging from 2.55–2.84 Å. In the second Mo site, Mo is bonded in a 11-coordinate geometry to eleven Al atoms. There are a spread of Mo–Al bond distances ranging from 2.55–2.85 Å. There are seven inequivalent Al sites. In the first Al site, Al is bonded in a 4-coordinate geometry to four Mo atoms. In the second Al site, Al is bonded in a 1-coordinate geometry to four Mo atoms. In the third Al site, Al is bonded in a distorted linear geometry to two Mo and one Al atom. The Al–Al bond length is 2.88 Å. In the fourth Al site, Al is bonded in a 3-coordinate geometry to three Mo and one Al atom. The Al–Al bond length is 3.01 Å. In the fifth Al site, Al is bonded in a 3-coordinate geometry to three Mo and one Al atom. The Al–Al bond length is 2.80 Å. In the sixth Al site, Al is bonded in a 2-coordinate geometry to two equivalent Mo and eight Al atoms. There are a spread of Al–Al bond distances ranging from 2.67–2.87 Å. In the seventh Al site, Al is bonded in a 2-coordinate geometry to two equivalent Mo and three equivalent Al atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr5Mo2N7 by Materials Project

Sr5Mo2N7 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are five inequivalent Sr2+ sites. In the first Sr2+ site, Sr2+ is bonded in a 6-coordinate geometry to six N3- atoms. There are a spread of Sr–N bond distances ranging from 2.59–3.07 Å. In the second Sr2+ site, Sr2+ is bonded to five N3- atoms to form distorted SrN5 square pyramids that share corners with two equivalent SrN6 octahedra, a cornercorner with one SrN6 pentagonal pyramid, corners with three MoN4 tetrahedra, edges with two equivalent SrN6 pentagonal pyramids, edges with two equivalent SrN5 square pyramids, and an edgeedge with one MoN4 tetrahedra. The corner-sharing octahedra tilt angles range from 29–83°. There are a spread of Sr–N bond distances ranging from 2.56–2.74 Å. In the third Sr2+ site, Sr2+ is bonded to six N3- atoms to form distorted SrN6 octahedra that share corners with three equivalent SrN6 pentagonal pyramids, corners with two equivalent SrN5 square pyramids, corners with three MoN4 tetrahedra, a cornercorner with one SrN5 trigonal bipyramid, edges with two equivalent SrN6 octahedra, edges with two equivalent MoN4 tetrahedra, and edges with two equivalent SrN5 trigonal bipyramids. There are a spread of Sr–N bond distances ranging from 2.58–2.94 Å. In the fourth Sr2+ site, Sr2+ is bonded to five N3- atoms to form distorted SrN5 trigonal bipyramids that share a cornercorner with one SrN6 octahedra, corners with three equivalent SrN6 pentagonal pyramids, corners with four MoN4 tetrahedra, edges with two equivalent SrN6 octahedra, an edgeedge with one SrN6 pentagonal pyramid, an edgeedge with one MoN4 tetrahedra, and an edgeedge with one SrN5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 19°. There are a spread of Sr–N bond distances ranging from 2.56–2.74 Å. In the fifth Sr2+ site, Sr2+ is bonded to six N3- atoms to form distorted SrN6 pentagonal pyramids that share corners with three equivalent SrN6 octahedra, a cornercorner with one SrN5 square pyramid, corners with two equivalent MoN4 tetrahedra, corners with three equivalent SrN5 trigonal bipyramids, an edgeedge with one SrN6 pentagonal pyramid, edges with two equivalent SrN5 square pyramids, edges with two equivalent MoN4 tetrahedra, and an edgeedge with one SrN5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 26–73°. There are a spread of Sr–N bond distances ranging from 2.60–2.95 Å. There are two inequivalent Mo+5.50+ sites. In the first Mo+5.50+ site, Mo+5.50+ is bonded to four N3- atoms to form MoN4 tetrahedra that share corners with two equivalent SrN6 octahedra, corners with two equivalent SrN6 pentagonal pyramids, a cornercorner with one SrN5 square pyramid, corners with two equivalent SrN5 trigonal bipyramids, an edgeedge with one SrN5 square pyramid, and an edgeedge with one MoN4 tetrahedra. The corner-sharing octahedra tilt angles range from 6–89°. There are a spread of Mo–N bond distances ranging from 1.84–2.04 Å. In the second Mo+5.50+ site, Mo+5.50+ is bonded to four N3- atoms to form MoN4 tetrahedra that share a cornercorner with one SrN6 octahedra, corners with two equivalent SrN5 square pyramids, corners with two equivalent SrN5 trigonal bipyramids, edges with two equivalent SrN6 octahedra, edges with two equivalent SrN6 pentagonal pyramids, and an edgeedge with one SrN5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 14°. There are a spread of Mo–N bond distances ranging from 1.88–1.90 Å. There are seven inequivalent N3- sites. In the first N3- site, N3- is bonded to three Sr2+ and two equivalent Mo+5.50+ atoms to form a mixture of distorted corner and edge-sharing NSr3Mo2 square pyramids. In the second N3- site, N3- is bonded in a 4-coordinate geometry to three Sr2+ and one Mo+5.50+ atom. In the third N3- site, N3- is bonded to four Sr2+ and one Mo+5.50+ atom to form distorted NSr4Mo square pyramids that share corners with two NSr3Mo2 square pyramids, corners with two equivalent NSr4Mo trigonal bipyramids, and edges with two NSr4Mo square pyramids. In the fourth N3- site, N3- is bonded in a 6-coordinate geometry to five Sr2+ and one Mo+5.50+ atom. In the fifth N3- site, N3- is bonded to four Sr2+ and one Mo+5.50+ atom to form distorted NSr4Mo trigonal bipyramids that share corners with five NSr3Mo2 square pyramids, an edgeedge with one NSr4Mo square pyramid, and edges with two equivalent NSr4Mo trigonal bipyramids. In the sixth N3- site, N3- is bonded to four Sr2+ and one Mo+5.50+ atom to form distorted NSr4Mo square pyramids that share a cornercorner with one NSr4Mo square pyramid, a cornercorner with one NSr4Mo trigonal bipyramid, edges with three NSr3Mo2 square pyramids, and an edgeedge with one NSr4Mo trigonal bipyramid. In the seventh N3- site, N3- is bonded in a 6-coordinate geometry to five Sr2+ and one Mo+5.50+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ba(Mo3S4)2 by Materials Project

BaMo6S8 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. Ba2+ is bonded in a body-centered cubic geometry to eight S2- atoms. There are a spread of Ba–S bond distances ranging from 3.01–3.30 Å. There are three inequivalent Mo+2.33+ sites. In the first Mo+2.33+ site, Mo+2.33+ is bonded to five S2- atoms to form a mixture of edge and corner-sharing MoS5 square pyramids. There are a spread of Mo–S bond distances ranging from 2.38–2.65 Å. In the second Mo+2.33+ site, Mo+2.33+ is bonded to five S2- atoms to form a mixture of edge and corner-sharing MoS5 square pyramids. There are a spread of Mo–S bond distances ranging from 2.37–2.65 Å. In the third Mo+2.33+ site, Mo+2.33+ is bonded to five S2- atoms to form a mixture of edge and corner-sharing MoS5 square pyramids. There are a spread of Mo–S bond distances ranging from 2.44–2.68 Å. There are four inequivalent S2- sites. In the first S2- site, S2- is bonded in a 4-coordinate geometry to one Ba2+ and three Mo+2.33+ atoms. In the second S2- site, S2- is bonded in a 5-coordinate geometry to one Ba2+ and four Mo+2.33+ atoms. In the third S2- site, S2- is bonded in a 5-coordinate geometry to one Ba2+ and four Mo+2.33+ atoms. In the fourth S2- site, S2- is bonded in a 5-coordinate geometry to one Ba2+ and four Mo+2.33+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs3Te17Mo15 by Materials Project

Cs3Mo15Te17 crystallizes in the hexagonal P6_3/m space group. The structure is three-dimensional. there are two inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 9-coordinate geometry to nine Te2- atoms. There are a spread of Cs–Te bond distances ranging from 3.88–4.09 Å. In the second Cs1+ site, Cs1+ is bonded in a 11-coordinate geometry to eleven Te2- atoms. There are a spread of Cs–Te bond distances ranging from 3.89–4.09 Å. There are three inequivalent Mo+2.07+ sites. In the first Mo+2.07+ site, Mo+2.07+ is bonded in a see-saw-like geometry to four Te2- atoms. There are a spread of Mo–Te bond distances ranging from 2.79–2.89 Å. In the second Mo+2.07+ site, Mo+2.07+ is bonded in a see-saw-like geometry to four Te2- atoms. There are a spread of Mo–Te bond distances ranging from 2.83–2.89 Å. In the third Mo+2.07+ site, Mo+2.07+ is bonded to five Te2- atoms to form a mixture of corner and edge-sharing MoTe5 square pyramids. There are a spread of Mo–Te bond distances ranging from 2.74–2.92 Å. There are four inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 6-coordinate geometry to two Cs1+ and four Mo+2.07+ atoms. In the second Te2- site, Te2- is bonded in a 5-coordinate geometry to one Cs1+ and four Mo+2.07+ atoms. In the third Te2- site, Te2- is bonded in a 7-coordinate geometry to three Cs1+ and four Mo+2.07+ atoms. In the fourth Te2- site, Te2- is bonded in a 7-coordinate geometry to one Cs1+ and three equivalent Mo+2.07+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs3Mo15Se17 by Materials Project

Cs3Mo15Se17 crystallizes in the hexagonal P6_3/m space group. The structure is three-dimensional. there are two inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 9-coordinate geometry to nine Se2- atoms. There are a spread of Cs–Se bond distances ranging from 3.70–3.93 Å. In the second Cs1+ site, Cs1+ is bonded in a 11-coordinate geometry to eleven Se2- atoms. There are a spread of Cs–Se bond distances ranging from 3.71–3.97 Å. There are three inequivalent Mo+2.07+ sites. In the first Mo+2.07+ site, Mo+2.07+ is bonded to five Se2- atoms to form a mixture of edge and corner-sharing MoSe5 square pyramids. There are a spread of Mo–Se bond distances ranging from 2.55–2.71 Å. In the second Mo+2.07+ site, Mo+2.07+ is bonded in a see-saw-like geometry to four Se2- atoms. There are a spread of Mo–Se bond distances ranging from 2.63–2.72 Å. In the third Mo+2.07+ site, Mo+2.07+ is bonded in a see-saw-like geometry to four Se2- atoms. There are a spread of Mo–Se bond distances ranging from 2.59–2.71 Å. There are four inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 6-coordinate geometry to two Cs1+ and four Mo+2.07+ atoms. In the second Se2- site, Se2- is bonded in a 5-coordinate geometry to one Cs1+ and four Mo+2.07+ atoms. In the third Se2- site, Se2- is bonded in a 7-coordinate geometry to three Cs1+ and four Mo+2.07+ atoms. In the fourth Se2- site, Se2- is bonded in a 7-coordinate geometry to one Cs1+ and three equivalent Mo+2.07+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TlCoMo2 by Materials Project

Mo2CoTl crystallizes in the cubic F-43m space group. The structure is three-dimensional. there are two inequivalent Mo sites. In the first Mo site, Mo is bonded to four equivalent Mo and four equivalent Tl atoms to form distorted edge-sharing MoTl4Mo4 tetrahedra. All Mo–Mo bond lengths are 2.76 Å. All Mo–Tl bond lengths are 2.76 Å. In the second Mo site, Mo is bonded in a 4-coordinate geometry to four equivalent Mo, four equivalent Co, and six equivalent Tl atoms. All Mo–Co bond lengths are 2.76 Å. All Mo–Tl bond lengths are 3.19 Å. Co is bonded in a distorted body-centered cubic geometry to four equivalent Mo and four equivalent Tl atoms. All Co–Tl bond lengths are 2.76 Å. Tl is bonded in a distorted body-centered cubic geometry to ten Mo and four equivalent Co atoms.

36 MATERIALS SCIENCE↗