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Allargentum

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Allargentum
Allargentum is a mineral from the class of antimonides, superclass of sulfides and sulfosalts (sometimes ascribed to the natural elements and alloys class), with formula written as Ag1-xSbx, where x = 0.09–0.16. This moderately rare mineral is found in silver ores and is therefore named from the Greek άλλος ("allos", another) and the Latin 'argentum' (silver). Its Vickers hardness is 172–203.

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Mineralogy Database Dictionary

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Allargentum

General Information:
 Chemical Formula:
Ag1-xSbx(x=0.009-0.16)
 Composition:
(Molecular Weight = 108.01 gm)
Silver 98.87 % Ag
Antimony 1.13 % Sb
 Empirical Formula:
Ag0.99Sb0.01
 IMA Status:
Approved IMA 1969
 Locality:
TL: CAN, ON, Cobalt, Hi-Ho mn
 Name Origin:
Named from the Greek for 'another' and the Latin 'argentum'.
Physical Properties:
 Color:
silver gray.
 Density:
10
 Diaphaniety:
Opaque
 Hardness:
4 - Fluorite
 Luster:
Metallic
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