15125 (6) Vitrophyric Pigeonite Basalt
 >View Microscope
Fact sheet
Description: 

15125 is a pyroxene-phyric basalt, with numerous skeletal pyroxenes and some olivine embedded in a dark, cryptocrystalline matrix (quench texture). The composition and texture of 15125 are similar to that of larger sample 15597. The specimen contains about 50% skeletal olivine and pyroxene crystals set in a wholly crystalline groundmass. The groundmass consists of spherulitic alternating plagioclase and pyroxene needles in a feathery arrangement. The pyroxene phenocrysts are highly zoned. Accessories include ilmenite and metallic iron. 

The sample weighed 6.5 grams before analysis. It has not been dated.

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

The mounting resin of this thin section has deteriorated over time and now contains clusters of colourful dendrites around the thin section.

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\