Chlorapatite and Austinite Physical Properties

Chlorapatite

Austinite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Easily soluble in cold dilute HCl

1.3 Durability

Not Available

1.4 Specific Gravity

3.17-3.184.12

1 7.18

1.5 Fracture

Not Available

Brittle, Uneven, Brittle, Uneven

1.6 Cleavage

Not Available

Good in two directions parallel to the prism faces {110}

1.7 Mohs Hardness

Not Available4-4.5

2 10

1.8 Chemical Composition

Ca 5(PO 4) 3ClAnthony et al , Handbook of mineralogy (2001)

CaZn(AsO4)(OH)

Chlorapatite and Austinite Chemical Formula

While comparing Chlorapatite 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 Chlorapatite and Austinite chemical formula.

Chemical formula of Chlorapatite- Ca 5(PO 4) 3ClAnthony et al , Handbook of mineralogy (2001)
Chemical formula of Austinite- CaZn(AsO4)(OH)

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Chlorapatite and Austinite Specific Gravity

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