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

Cancrinite mineral - You can buy these samples

Cancrinite is a rock-forming mineral of nepheline syenites. It has a magmatic nature. It was first discovered in the Urals. When the content of CO3 in the composition of the mineral becomes less than SO4, the mineral is called vishnevit.

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

Physical properties of Cancrinite

General
Category Feldspathoid
Formula
(repeating unit)
Na6Ca2[(CO3)2|Al6Si6O24]·2H2O
IMA symbol Ccn
Strunz classification 9.FB.05
Crystal system Hexagonal
Crystal class Pyramidal (6)
(same H-M symbol)
Space group P63
Unit cell a = 12.67(9) Å,
c = 5.15(4) Å; Z= 1
Identification
Color Grey-green, white, yellow, blue, orange, reddish
Crystal habit Rare as prismatic crystals; typically massive
Twinning Rare – lamellar
Cleavage Perfect on {1010}, poor on {0001}
Fracture Irregular/uneven
Tenacity Brittle
Mohs scale hardness 5–6
Luster Vitreous, greasy, pearly
Streak White
Diaphaneity Transparent, translucent
Specific gravity 2.42 – 2.51
Optical properties Uniaxial (+/-)
Refractive index nω = 1.507 – 1.528 nε = 1.495 – 1.503
Birefringence δ = 0.012 – 0.025
Code: 1356
Cherry mountains, Chelyabinsk region, Southern Urals, RF
68*39*21mm

0.00 $ $12.73

Code: 1357
Cherry mountains, Chelyabinsk region, Southern Urals, RF
46*42*17mm

0.00 $ $8.73

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