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

Fluorescent Minerals (UV) "Calcite"

Calcite is an extremely common rock-forming mineral. Exceptionally diverse in crystal form. It is varied in color, but the base color of calcite without impurities is white or colorless. One of the minerals on the Mohs hardness scale is hardness 3. It has a number of varieties, for example, Icelandic spar is a transparent variety of calcite.

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

Physical properties of Calciten

General
Category Carbonate minerals
Formula
(repeating unit)
CaCO3
Strunz classification 5.AB.05
Crystal system Trigonal
Crystal class Hexagonal scalenohedral (3m)
H-M symbol: (3 2/m)
Space group R3c
Unit cell a = 4.9896(2) Å,
c = 17.0610(11) Å; Z = 6
Identification
Color Typically colorless or white - may have shades of various colors
Crystal habit Crystalline, granular, stalactitic, concretionary, massive, rhombohedral
Twinning Common by four twin laws
Cleavage Perfect on {1011} three directions with angle of 74° 55'
Fracture Conchoidal
Tenacity Brittle
Mohs scale hardness 3 (defining mineral)
Luster Vitreous to pearly on cleavage surfaces
Streak White
Diaphaneity Transparent to translucent
Specific gravity 2.71
Optical properties Uniaxial (−)
Refractive index nω = 1.640–1.660
nε = 1.486
Birefringence δ = 0.154–0.174
Solubility Soluble in dilute acids
Other characteristics May fluoresce red, blue, yellow, and other colors under either SW and LW UV; phosphorescent

Code: 3767
2-d Soviet mine, Dalnegorsk, Primorye, RF
53*50*29mm

0.00 $ $23.64

Code: 3080
2-d Soviet mine, Dalnegorsk, Primorye, RF
83*27*14mm

0.00 $ $61.09

Code: 1300
Murzinskoye (Au) field, Altai, RF
40*35*/25mm

0.00 $ $42.55

Code: 1301
Murzinskoye (Au) field, Altai, RF
38*26*18mm

0.00 $ $42.55

Code: 871
2-d Soviet mine, Dalnegorsk, Primorye, RF
65*35*20mm

0.00 $ $26.18

Code: 2039
2-d Soviet mine, Dalnegorsk, Primorye, RF
138*110*52mm

0.00 $ $141.82

Code: 942
2-d Soviet mine, Dalnegorsk, Primorye, RF
62*56*36mm

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Code: 943
2-d Soviet mine, Dalnegorsk, Primorye, RF
58*37*41mm

0.00 $ $27.27

Code: 522
2-d Soviet mine, Dalnegorsk, Primorye, RF
103*108*64mm

0.00 $ $163.64

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