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What this green mineral could be? it's harder than glass : r/rockhounds

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Identity Help : Dear experts,is this Euclase?

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Another found in eastern idaho, no clue what it is : r/rockhounds

15dfvdfv by dfdfvdfv345345ffgb - Issuu

Quartz: Mineral information, data and localities.

Rock Hounds, I found this in the Alapaha river in Elchols county GA

Is this green obsidian? Slag? Something else? : r/rockhounds

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