Engineering topics
Publications and source records attributed to McKay, G..
We report mineralogy and experimental petrology of a new angrite Sahara 99555. We believe that it cooled very rapidly near the surface of its parent body and it shows a close affinities to LEW 87051 and Asuka 881371.
A 2710 g meteorite, Sahara 99555 (Sah99), was recently recovered from the Sahara and reported to be the 5th angrite. It is the largest angrite ever found and may offer useful information to better understand the unusual petrogeneses of this rare achondrite group. It may also allow us to examine the chronological record of igneous activity in the very early solar system. We obtained a 2.6 g chip of Sah99 and here present a preliminary report of its petrology and mineralogy in conjunction with a crystallization experiment on an analogue composition.