فلئوریت

Key facts

Mineral.name

Fluorite

Mineral.category

Halide mineral

Mineral.boxbgcolor

305c3c

Mineral.boxtextcolor

fff

Mineral.image

3192M-fluorite1.jpg

Mineral.imagesize

260px

Mineral.caption

Deep green isolated fluorite crystal resembling a truncated octahedron, set upon a micaceous matrix, from Erongo Mountain, Erongo Region, Namibia (overall size: 50 mm × 27 mm, crystal size: 19 mm wide, 30 g)

Mineral.formula

CaF2

Mineral.IMAsymbol

Flr

Mineral.strunz

3.AB.25

Mineral.system

Isometric

Mineral.class

Hexoctahedral (mm) H–M symbol: (4/m 2/m) (cF12)

Mineral.symmetry

Fmm (No. 225)

Mineral.unit cell

a = 5.4626 Å; Z = 4

Mineral.color

Colorless, although samples are often deeply colored owing to impurities; Purple, lilac, golden-yellow, green, blue, pink, champagne, brown.

Mineral.habit

Well-formed coarse sized crystals; also nodular, botryoidal, rarely columnar or fibrous; granular, massive

Mineral.twinning

Common on {111}, interpenetrant, flattened

Mineral.cleavage

Octahedral, perfect on {111}, parting on {011}

via Wikipedia infobox