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Richterite
Richterite

Jet lignite
Jet lignite



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Richterite
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Jet lignite
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.0-3.5
Uneven
Perfect
5-6
Na(CaNa)(Mg,Fe++)5(Si8O22)(OH)2
 
-
-
-
1.30-1.34
-
None
2.5
C