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Formula (repeating unit) CaF 2: IMA symbol: Flr [1] Strunz classification: 3.AB.25: ... Fluorite (also called fluorspar) is the mineral form of calcium fluoride, CaF 2.
Some sources give unit cell parameters for one formula unit per unit cell (Z = 1), but some scientists consider the formula to be half the value accepted by the International Mineralogical Association (IMA), i.e. Ca 5 ((Si,S)O 4)) 3 F, with two formula units per unit cell (Z = 2). Cell parameters for natural, as opposed to synthetic, material ...
Formula (repeating unit) FeS 2: IMA symbol: Mrc [1] ... Formula mass: 119.98 g/mol: ... sphalerite, fluorite, dolomite, and calcite. [3] As a primary mineral ...
Formula (repeating unit) Li 2 Ca 3 (BeSiO 4) 3 F 2: IMA symbol: ... Formula mass: 475.4 g/mol: Color: ... Associated mineral include fluorite, ...
The fluorite structure refers to a common motif for compounds with the formula MX 2. [1] [2] The X ions occupy the eight tetrahedral interstitial sites whereas M ions occupy the regular sites of a face-centered cubic (FCC) structure. Many compounds, notably the common mineral fluorite (CaF 2), adopt this structure.
Formula (repeating unit) FeS 2: IMA symbol: Py [1] ... Formula mass: 119.98 g/mol: ... Pink fluorite perched between pyrite on one side and metallic galena on the ...
Frankdicksonite has fluorite crystal structure with a cubic symmetry and the lattice constant a = 619.64 pm. Its Vickers hardness on the {111} cleavage crystal faces varies between 88 and 94 kg/mm 2 and is close to that of the synthetic barium fluoride (95 kg/mm 2). Its refractive index (1.475) is almost identical to that of BaF 2 (1.474).
Fluorapatite, often with the alternate spelling of fluoroapatite, is a phosphate mineral with the formula Ca 5 (PO 4) 3 F (calcium fluorophosphate). Fluorapatite is a hard crystalline solid. Fluorapatite is a hard crystalline solid.