21 Terms
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Minerals
Naturally occurring substance that is solid and stable at room temperature, representable by a chemical formula, usually abiogenic, and has an ordered atomic structure. It is different from a rock, which can be an aggregate of minerals or non-minerals, and does not have a specific chemical composition. The general definition of a mineral encompasses the following criteria: 1 - Naturally occurring 2 - Stable at room temperature 3 - Represented by a chemical formula 4 - Usually abiogenic 5 - Ordered atomic arrangement
Contributors in Minerals
Minerals
minnesotaite
Geology; Minerals
Minnesotaite is an iron silicate mineral with formula: (Fe 2+ ,Mg) 3 Si 4 O 10 (OH) 2 . It crystallizes in the triclinic crystal system and occurs as fine needles and platelets with other silicates. ...
segelerite
Geology; Minerals
Segelerite is a complex phosphate mineral with formula CaMgFe 3+ OH(PO 4 ) 2 ·H 2 O. It occurs in pegmatites and forms striking green or chartreuse crystals. It was discovered in 1974 in the Black ...
tourmaline
Geology; Minerals
Tourmaline is a crystal boron silicate mineral compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. Tourmaline is classified as a semi-precious stone and the ...
breithauptite
Geology; Minerals
Breithauptite is a nickel antimonide mineral with the simple formula NiSb. Breithauptite is a metallic opaque copper-red mineral crystallizing in the hexagonal - dihexagonal dipyramidal crystal ...
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