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

Collectible minerals - full range in stock "Cyanotrichite"

Cyanotrichite is a rare secondary copper mineral that forms in an oxidation zone with other copper-bearing minerals. Translated from Greek as "blue hair", which corresponds to the color and shape of its crystals. Little described.
You can see cyanotrichite stone for sale and buy it in the Minerals of Russia online store.

Physical properties of Cyanotrichite

General
Category Sulfate minerals
Formula
(repeating unit)
Cu4Al2[(OH)12|SO4]·2H2O
IMA symbol Cya
Strunz classification 7.DE.10
Crystal system Monoclinic
Crystal class Prismatic (2/m)
(same H-M symbol)
Space group C2/m
Unit cell a = 10.16 Å, b = 12.61 Å,
c = 2.9 Å; Z = 1
Identification
Color Sky-blue, azure-blue
Crystal habit Acicular crystals and fibrous aggregates; incrustations
Fracture Uneven
Mohs scale hardness 1-3
Luster Silky
Streak Light blue
Diaphaneity Transparent to translucent
Specific gravity 2.76
Optical properties Biaxial (+)
Refractive index nα = 1.588 nβ = 1.617 nγ = 1.655
Birefringence δ = 0.067
Pleochroism X = colorless; Y = pale blue; Z = bright blue
2V angle Measured: 82°

Code: 1728
Kamenushinsky deposit, Kemerovo region, South Siberia, RF
45*38*21mm

0.00 $ $42.55

Code: 1293
Kamenushinsky deposit, Kemerovo region, South Siberia, RF
48*36*18mm

0.00 $ $50.18

Code: 2479
Kamenushinsky deposit, Kemerovo region, South Siberia, RF
39*25*14mm

0.00 $ $34.55

Code: 2480
Kamenushinsky deposit, Kemerovo region, South Siberia, RF
29*15*21mm

0.00 $ $16.73

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