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Amazonite
Amazonite

Siderite
Siderite



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Amazonite
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Siderite
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.55-2.57
Uneven
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
6-6.5
KAlSi3O8
 
Brittle
-
-
3.83-3.89
Uneven, Conchoidal
Perfect on {01 1 1}
3.5-4.5
Fe2+ CO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references