Wednesday, September 5, 2012

Icky with Anorthosite

Besides the obvious greenish feldspar, the countertop rock is composed of black pyroxene, gray metallic minerals (magnetite or ilmenite are likely, but I didn't bring my magnet, magnetometer, or portable xrf), and pyrite.

Also see:
Geo-beers: Gimme an Icky

Anorthosite and labradorescence

Theme and Variations on Anorthosite and Labradorescence

Rock 366 : Day 72 : Anorthosite with sulphides

Labradorite at Wikipedia (photo)

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