Learn about Copper
native copper with spinel-twinned crystals and arborescences; notable from Lake Superior, Itauz, Dongchuan, Corocoro, prized for color and localities.Ahmednagar District
Ahmednagar District, India — zeolite-rich Deccan Traps locality known for apophyllite, stilbite, and Rahuri crystals; prized for distinctive, undamaged example…
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