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Siderite
Siderite

Austinite
Austinite



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Siderite
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Austinite

Siderite and Austinite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

-
Easily soluble in cold dilute HCl

Durability

-
-

Specific Gravity

3.83-3.894.12
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
Uneven

Cleavage

Perfect on {01 1 1}
Good in two directions parallel to the prism faces {110}

Mohs Hardness

3.5-4.54-4.5
2 10
👆🏻

Chemical Composition

Fe2+ CO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
CaZn(AsO4)(OH)

Siderite and Austinite Chemical Formula

While comparing Siderite and Austinite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Siderite and Austinite chemical formula.

  • Chemical formula of Siderite- Fe2+ CO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Austinite- CaZn(AsO4)(OH)

Siderite and Austinite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Siderite and Austinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Siderite and Austinite Optical Properties during the identification of gemstone. Specific gravity of Siderite is 4.12 whereas that of Austinite is 4.12.