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Hyalite in Hyalite Canyon

August 11, 2016

Near Bozeman Montana,  Hyalite, a form of opal with a clear glassy appearance covers broken talus and rocks and sparkles like a gem in the afternoon light.  I observed sections one-meter square that looked like bubbles of melted glass, poured over broken rock.


Greek for "glass stone",  Hyalite is generally considered the purest and clearest Opal variety; A cut gem can have the appearance of clear cut glass.  Hyalite is also called Muller's glass, jalite, and water opal.







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