15658 (10) Olivine Basalt
 >View Microscope
Fact sheet
Description: 

15658 is a medium-grained, olivine-bearing basalt. Pigeonite ranges from 1 to 2mm in length and is twinned and zoned. Most plagioclase feldspar form stubby crystals up to about 1mm, some of which are hollow. Some radial growth of plagioclase and pyroxene is present. Olivine forms scattered anhedral phenocrysts, and smaller grains are present, many as inclusions in pigeonite. Cristobalite, fayalite and a range of opaque phases are also present.

The sample weighed 11.6 grams before analysis and has not been dated.

Further details of this and other Apollo samples are here: http://curator.jsc.nasa.gov/lunar/

In Place
In Time
Accuracy:
Timescale:
Not known
Ma = Millions of years ago
In Focus
Collection:
What\
Type:
Type: 
igneous
What\
Rock-forming minerals:

Rock forming mineral:

What\
Accessory minerals:

Accessory minerals:

What\