70075 (4) Vitrophyric Basalt
 >View Microscope
Fact sheet
Description: 

70075 is a vitrophyric basalt with only a few small phenocrysts of olivine and armalcolite armoured with ilmenite. Early descriptions of an opaque glass matrix actually refers to fine-grained intergrowths of plagioclase, pyroxene and ilmenite.

Our thin section is thin in places, so the olivine and pyroxene phenocrysts visible in rotation 1 show low (grey) interference colours.

The sample weighed 5.64 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\