a black mica rich in iron occurring in scales
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AnswerCrossword Clue
lepidomelanea black mica rich in iron, occurring in scales
lepidomelanesLEPIDOMELANE, a black mica rich in iron, occurring in scales
staurolitemineral, basic iron aluminum silicate, Fe2Al2O7(SiO4)4(OH), occurring in brown to black prismatic crystals, which are often twinned in the form of a cross
tenoritemineral, cupric oxide, CuO, occurring in veins of copper in black, minute scales
tenoritesmineral, cupric oxide, CuO, occurring in veins of copper in black, minute scales
hematitevery common mineral, iron oxide, Fe2O3, occurring in steel-gray to black crystals and in red earthy masses: the principal ore of iron