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Keywords from Image Description:
Rubis pyrite phlogopite calcite. fr corindon var rubis pyrite mica var phlogopite calcite Luc Yen Mine Luc Yen Yenbai Yen Bai Province Vietnam corundum var ruby pyrite mica var phlogopite calcite Luc Yen Mine Luc Yen Yenbai Yen Bai Province Vietnam own Parent Gry Corundum Purple rubies Ruby Pyrite Phlogopite parageneses Taken with