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Natural Glasses from SciShow
Posted: Sat Mar 06, 2021 11:58 pm
by SwordfishMining
Re: Natural Glasses from SciShow
Posted: Sun Mar 07, 2021 7:11 am
by rocks2dust
Interesting. There are quite a few other natural amorphous materials/glasses out there:
- amorphous shear banding in earthquake faults and similar stress points
- bituminous rocks
- amorphous graphite
- pyroclastic glass such as Echo Mt. stone from northern California
Echo Mt. Stone (trees buried in pyroclastic events that combusted and produced glass)