stichtite
stichtite from Australia
stichtite from Australia
stichtite from Kaapsche of Hoop-Mpumalanga in South Africa
Detailed sheet
stichtite
It is named after Robert Stich, the mine owner, where she was discovered in 1910, in Tasmania, Australia.
CHEMICAL CHARACTERISTICS
Mg6Cr2[CO3] (OH)16 - 4(H2O)
hydrated chromium and magnesium carbonate
PHYSICAL CHARACTERISTICS
Main color
pink
Other colors
purple
shades from pink to mauve, purple
Color of streak
white, pink
Luster
greasy, pearly, resinous, vitreous
Hardness
1.5 to 2.0
Density
2.20 to 0.00
Cleavage
perfect
Fracture
uneven
we see small flat areas on the fracture
OPTICAL PROPERTIES
Transparency
translucent
rarely transparent
Refractive index
1.510 - 1.540
Double refraction
0.026
definite uniaxial positive
visible double refraction
No
Dispersion
aucune
Pleochroism
absent
Number of colors
1
Fluorescence
none
CRYSTALS PROPERTIES
pseudo-hexagonal prisms
crystals system
trigonal
OTHER INFORMATIONS
APPROACHING GEMS
Exploited
sites
It is found in Australia (Tasmania), Canada, Zimbabwe, South Africa, New Zealand, in the Urals in Russia.
use in jewelry
only a collection stone
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Gems
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