Stibiotantalite and Apophyllite Physical Properties

Stibiotantalite

Apophyllite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

Not Available2.30-2.50

1 7.18

1.5 Fracture

ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

Uneven, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

{???} Perfect

Perfect on (001)

1.7 Mohs Hardness

5.5-64.5-5

2 10

1.8 Chemical Composition

SbTaO 4Ulrich Henn and Claudio C.

KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

Stibiotantalite and Apophyllite Chemical Formula

While comparing Stibiotantalite and Apophyllite 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 Stibiotantalite and Apophyllite chemical formula.

Chemical formula of Stibiotantalite- SbTaO 4Ulrich Henn and Claudio C.
Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

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Stibiotantalite and Apophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Stibiotantalite and Apophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Stibiotantalite and Apophyllite Optical Properties during the identification of gemstone. Specific gravity of Stibiotantalite is 2.30-2.50 whereas that of Apophyllite is 2.30-2.50.