10049 - Fine grained ilmenite basalt
We would like to thank the following for the use of this sample:
10049 is a fine-grained ilmenite basalt (weight 193 grams) that is 3.5 billion years old. It has a granular texture and in places is vesicular to vuggy. An almost spherical vesicle is depicted in rotation 1 of the virtual microscope. Three species (pyroxene, plagioclase feldspar and ilmenite) make up the bulk of the rock and consist of anhedral or subhedral crystals in an interlocking network. The sample also contains rare olivine and a small interstitial component that includes troilite (an iron sulphide) with metallic iron inclusions and glass.
Further details of this and other Apollo samples are here: http://curator.jsc.nasa.gov/lunar/
Ma = Millions of years ago
Rock forming mineral:
- metallic iron