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Identity HelpPhilip's mine, Anthony's nose Pegmatite

22nd Apr 2024 23:32 UTCItsuki Imaeda

This pegmatite has Hornblende, Albite, Biotite, Pyrite, and 1 unknown mineral. It has a hardness of around 6, greasy luster, and by the way it formed, seemes like an amphores structure. I'm guessing this is Opal var. Hyalite, but I need comformation.

Questions Answered
Can it scratch glass? : Unable to test
Can you scratch it with your fingernail? : No
Is it light/heavy for the size? : Normal

22nd Apr 2024 23:40 UTCAlfredo Petrov Manager

There is plenty of very coarse-grained Ca-rich plagioclase, like labradorite or similar, at the Philips pyrite mine too. I think that's what this is, a weathered Ca-plagioclase.

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