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

Stilbite mineral - You can buy these samples

Stilbite is a low-temperature mineral from the zeolite family. It occurs in the voids of rocks of volcanic origin. It is used in industry as a natural filter for gases and liquids.

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

Physical properties of Stilbite

General
Category Tectosilicate, Zeolite
Formula
(repeating unit)
Stilbite-Ca: NaCa4(Si27Al9)O72·28(H2O)
Stilbite-Na: Na9(Si27Al9)O72·28(H2O)
IMA symbol Stb
Strunz classification 9.GE.10 (10 ed)
8/J.23-30 (8 ed)
Dana classification 77.1.4.3
Crystal system Monoclinic,
also triclinic and orthorhombic
Crystal class Prismatic (2/m)
(same H-M symbol)
Space group C2/m (monoclinic)
Amma (orthorhombic)
Identification
Formula mass Stilbite-Ca: 2,840 g/mol
Stilbite-Na: 2,864 g/mol
Color Usually colorless, white or pink
Crystal habit Thin tabular, aggregates sheaf-like or in bow-ties, also fibrous and globular.
Twinning Very common on {001}
Cleavage Perfect on {010}
Fracture Conchoidal or uneven
Tenacity Brittle
Mohs scale hardness 3+12 to 4
Luster Vitreous, pearly on {010}
Streak White
Diaphaneity Transparent to translucent
Specific gravity 2.12 to 2.22
Optical properties Biaxial (-)
Refractive index Nx = 1.479 to 1.492, Ny = 1.485 to 1.500, Nz = 1.489 to 1.505[2][3] Nx = 1.484 to 1.500, Ny = 1.492 to 1.507, Nz = 1.494 to 1.513[4][5]
Fusibility Easily fused by blowpipe (~1050 °C) to produce a white "enamel"[6]
Solubility Decomposes in HCl
Code: 2419
Sokolovskoye deposit, Kostanay region, Kazakhstan
37*30*23mm

0.00 $ $21.45

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