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Cinnabar
Cinnabar
☒

Piemontite
Piemontite
☒



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Cinnabar
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Piemontite
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Slightly sectile
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
-
2
Uneven
Prismatic {10 1 0}, perfect
2-2.5
HgSMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
 
Brittle
-
-
-9999
Uneven, Splintery
[001] good, [100] distinct
6-6.5
Ca2Al3(SiO4)(Si2O7)O(OH)