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Rainbow Obsidian: Molten Earth To A Mesmerizingly Colorful Glassy Rock
In this case, the material is microscopic crystals of metallic magnetite, a magnetic mineral; it’s the light hitting magnetite that makes the obsidian appear colorful, rather than the mineral ...
A Californian collector bought a rock in Morocco in 2011 and more than a decade later it turns out to be a much more valuable material
When you find a strange looking rock in the desert, it’s likely worth having some experts take a proper look at it, just like in this case.
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LIST: Minerals you can find in Central Virginia for National ‘Collect Rocks’ Day
(WRIC) — In honor of National “Collect Rocks” Day ... Many different minerals have been found in Louisa. This includes gold, ...