Rhyolite porphyry #12 8-30

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Author name
rocksandminerals
Source
Sketchfab
Polygon Count
1,702,864
Release Date
2019-08-30
License
CC BY 4.0
agisoftphotoscan

Asset Overview

Rhyolite porphyry from Chaffee County, Colorado. The black crystals are biotite. Phenocrysts of quartz and K-feldspar are also present but hard to see. 9 cm in longest dimension.