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Identity HelpCrystals/minerals on this rock look different in change of lighting.....what are they?

13th Mar 2019 02:55 UTCCPerrone

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This rock was found in our backyard, I’m not sure if it is native to the area. (Not far from the Ross Barnett Rwservoir in MS). It could’ve been left by the previous home owners. It’s 10 “x 6”

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13th Mar 2019 23:30 UTCCPerrone

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Here are additional photos:

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Mineral and/or Locality  
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