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Diameter, mm (1mm - 0,039inch)

Collectible minerals - full range in stock "Gypsum"

Gypsum is a typical sedimentary mineral. Belongs to the class of sulfates, while containing water in its composition. When heated, gypsum crystals can lose water and turn into powder. Selenite is fibrous, and alabaster is a granular variety of gypsum.

You can see gypsum stone for sale and buy it in the Minerals of Russia online store.

Physical properties of Gypsum

Category Sulfate minerals
(repeating unit)
IMA symbol Gp
Strunz classification 7.CD.40
Crystal system Monoclinic
Crystal class Prismatic (2/m)
H-M symbol: (2/m)
Space group Monoclinic
Space group: I2/a
Unit cell a = 5.679(5), b = 15.202(14)
c = 6.522(6) Å; β = 118.43°; Z = 4
Color Colorless (in transmitted light) to white; often tinged other hues due to impurities; may be yellow, tan, blue, pink, dark brown, reddish brown or gray
Crystal habit Massive, flat. Elongated and generally prismatic crystals
Twinning Very common on {110}
Cleavage Perfect on {010}, distinct on {100}
Fracture Conchoidal on {100}, splintery parallel to [001]
Tenacity Flexible, inelastic
Mohs scale hardness 1.5–2 (defining mineral for 2)
Luster Vitreous to silky, pearly, or waxy
Streak White
Diaphaneity Transparent to translucent
Specific gravity 2.31–2.33
Optical properties Biaxial (+)
Refractive index nα = 1.519–1.521
nβ = 1.522–1.523
nγ = 1.529–1.530
Birefringence δ = 0.010
Pleochroism None
2V angle 58°
Fusibility 5
Solubility Hot, dilute HCl
Major varieties
Satin spar Pearly, fibrous masses
Selenite Transparent and bladed crystals
Alabaster Fine-grained, slightly colored

Code: 614
village Okulovo, Nizhny Novgorod region, Volga region, RF

0.00 $ $13.00

Code: 2127
village Okulovo, Nizhny Novgorod region, Volga region, RF

0.00 $ $13.33

Code: 613
village Okulovo, Nizhny Novgorod region, Volga region, RF

0.00 $ $15.00

Code: 611
village Okulovo, Nizhny Novgorod region, Volga region, RF

0.00 $ $15.00

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