Rock I found and wondering what it is?

NancyZ

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Feb 26, 2017
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Primary Interest:
All Treasure Hunting

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Cool find-- try the rock forum...
 

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It's Gypsum, a calcium sulfate mineral. The sample you have is a crystal habit known as "satin spar" which formed as an ancient body of water evaporated away leaving the dissolved CaSO4 behind either as a surface layer or as veins running through fissures in the ground below.
 

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There you have it. Good call paleomax.
 

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paleomaxx is correct, it is definitely an evaporite (a rock made of gypsum or salt that was formed when mineral filled water evaporates)
 

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