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Huanggang Mine, Chifeng, Inner Mongolia, China - Large terminated genthelvite crystal of 1.5 cm on the edge with minor magnetite and calcite
Huanggang Mine, Chifeng, Inner Mongolia, China - Nice brown twinned genthelvite crystals up to 0.9 cm on ludwigite and magnetite. Overalll size is 3x2x1.5 cm