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【Product Name】:Stephanite
【Categories】:Silver ore
【Item NO】:Ag4AgSbS4
【Specifications】:Ag silver 68.33, Sb stibium 15.42, S16.25
【Document download】:Click to download

Mineral characteristics: Name origin: Naming by the Austrian mining Engineer Archduke Stephan

Chemical composition:

Ag4AgSbS4, Ag silver 68.33, Sb stibium 15.42, S16.25

Physical properties:

Degree of hardness: 3.5-4.5

Proportion: Proportion 6.25g/cm3 (actual), 6.47g/cm3 (computation)

Cleavage: Cleaves {010} and (021) is incomplete

Fracture: Fracture uneven as inferior conchoidal

Color: Hard black

Streak: Black

Transparency: non-transparent

Gloss: Metallic luster

Photism: None

Others: Under the ore microscope, the reflection color is gray and flesh color violet

Optic properties:

The reflection color is grayish white, slightly has the purple rose color. Index of reflection: 29 (green light) 27.5 (orange light) 24.5 (thioindigo red). The double reflection is not obvious. Strong anisotropism. Does not have the internal reflection.


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