rhyolite porphyry - pinkish tan porphyritic rhyolite - Unit of 5 student specimens
This rock is an igneous rhyolite with feldspar crystals that have altered to kaolin, forming pseudomorphs visible within a fine-grained matrix.
- The description claims that the composition of the phenocrysts was identified by x-ray reflection spectroscopy.
Variants (1)
- Default Title — 4.20 USD — In stock
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Good foundation, but some important product data is still missing.
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