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What is this rock?

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asked Jun 27 by kadanator (120 points)

1 Answer

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It could be calcite, it could be quartz. If calcite, you can put a drop of visine or vinegar on it and it will react by bubbling. If it is quartz it will not react. Likewise, you would be able to scratch calcite with a knife but not quartz. That should help. After that other things will need to be tried.
answered Jun 27 by Weasel (51,230 points)

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