A Montana kid collected and identified these rocks-- over 60 years ago! Rock collecting is still fun and fascinating.
Rocks in this collection include copper sulfide, calcite, calcite crystals, and claystone.
Do you know which rock is which?
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Explore Earth Sciences with Montana Tech.
Gems, rocks, volcanoes & meteorites from the Smithsonian.
The rocks in the photos above are 1.Calcite 2.Calcite crystals 3.Claystone 4.Copper sulfide
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