Learn to identify and describe andesite, dacite, and rhyolite (three common volcanic rocks) with geology professor Shawn Willsey. Part of my ongoing series on some easy and practical ways to identify and interpret rocks.
Our opals are hosted in rhyolite flows and sedimentary deposits in Bentonite with gypsum in a caldera environment. Both fresh and mineral water in different millenium.
Link to PDF of document: https://drive.google.com/drive/folder...
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Rock Identification with Shawn Willsey
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SwordfishMining
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Rock Identification with Shawn Willsey
I'll jump over my shadow. https://www.virginvalleyopal.com"
Opals & more at my ESTY store https://swordfishmining.etsy.com"
Opals & more at my ESTY store https://swordfishmining.etsy.com"