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

Getchellite mineral - You can buy these samples

Getchellite is a rare little described mineral from the orpiment group.

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

Physical properties of Getchellite

Category Sulfide mineral
(repeating unit)
IMA symbol Get
Strunz classification 2.FA.35
Dana classification
Crystal system Monoclinic
Crystal class Prismatic (2/m)
(same H-M symbol)
Space group P21/a
Formula mass 293.81 g/mol
Color Dark red, sometimes with a purple to green iridescent tarnish
Crystal habit Subhedral crystals and massive with a platy texture
Twinning Simple and polysynthetic twins with the twin plane and composition plane parallel to {001}
Cleavage Perfect on {001}
Fracture Splintery
Tenacity Sectile; cleavage flakes are flexible and inelastic
Mohs scale hardness 1.5 to 2
Luster Vitreous to pearly on cleavage surfaces, otherwise resinous
Streak Orange red
Diaphaneity Transparent
Specific gravity 3.92 (observed) 4.0 (calculated)
Optical properties Biaxial (+), 2V=46°
Refractive index n = 2.720. Dispersion r > v strong
Melting point 340 °C to 355 °C
Other characteristics Not radioactive
Code: 497
Khaidarkan, Kyrgyzstan

0.00 $ $87.27

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