Franklinite and Austinite Physical Properties

Franklinite

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

5.05-5.224.12

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)

Brittle, Uneven, Brittle, Uneven

1.6 Cleavage

None

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

1.7 Mohs Hardness

5.5-64-4.5

2 10

1.8 Chemical Composition

(Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

CaZn(AsO4)(OH)

Franklinite and Austinite Chemical Formula

While comparing Franklinite 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 Franklinite and Austinite chemical formula.

Chemical formula of Franklinite- (Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Austinite- CaZn(AsO4)(OH)

Compare Red Gemstones

Franklinite Vs Hibonite

Franklinite Vs Hydrogrossular

Franklinite Vs Hexagonite

Franklinite and Austinite Specific Gravity

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