14161 (7069) Basaltic soil fragment
We would like to thank the following for the use of this sample:
Most particles of this soil fall into one of three broad groups: About 92% of them are fragments of impact melt breccias, fragmental microbreccias, and regolith breccias. A small group appears to be igneous and monomict. One particular fragment (14161,7373) is a whitlockite-rich quartz monzogabbro that shows textural evidence for the formation of granitic material by silicate liquid immiscibility.
Our thin section is a basalt that has been intensively studied. The orange material visible in plane polarised light is resin that has been damaged during electron beam bombardment. Laser damage (pits) are also visible in the largest phenocryst (see rotation 2). Our section is also thinner than normal (i.e. > 30 microns).
Further details of this and other Apollo samples are here: http://curator.jsc.nasa.gov/lunar/
Ma = Millions of years ago
Rock forming mineral: