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My cheap UV flashlight trick for spotting certain minerals
I was sorting a big box of mixed rocks from a trip to Arizona and couldn't tell some calcite pieces from plain quartz. I had a cheap UV flashlight from a Halloween costume, the kind that uses 3 AAA batteries. On a whim, I turned off the lights and shined it on the pile. The calcite pieces glowed bright orange, but the quartz was totally dark. It made sorting them out super fast. Anyone know other common rocks that light up under UV?
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wrenwilson11d ago
@linda_butler28 I used mine on fluorite, glows blue.
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