The chemical formula for hematite is Fe2O3 and its molecular weight is 159.69 grams. The Iron percentage in hematite is 69.94% and oxygen content accounts for 30.06%. The empirical formula for hematite is Fe3+2O3. Its availability is restricted to sedimentary, metamorphic, hydrothermal and magmatic rock species. Image from www.webmineral.com It exhibits trigonal, hexagonal scalenohedral crystal system. Hematite exhibits no cleavage and it exists in black, reddish gray and blackish red colors. The density of this mineral is 5.3 and it exhibit opaque to subtranslucent diaphaneity. The fractures are formed in these minerals which are designated by ...
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