Stibiotantalite and Purpurite Physical Properties

Stibiotantalite

Purpurite

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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 Available3.2-3.4

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), Brittle

1.6 Cleavage

{???} Perfect

[100] [001] perfect

1.7 Mohs Hardness

5.5-64-4.5

2 10

1.8 Chemical Composition

SbTaO 4Ulrich Henn and Claudio C.

MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

Stibiotantalite and Purpurite Chemical Formula

While comparing Stibiotantalite and Purpurite 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 Purpurite chemical formula.

Chemical formula of Stibiotantalite- SbTaO 4Ulrich Henn and Claudio C.
Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

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Stibiotantalite and Purpurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Stibiotantalite and Purpurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Stibiotantalite and Purpurite Optical Properties during the identification of gemstone. Specific gravity of Stibiotantalite is 3.2-3.4 whereas that of Purpurite is 3.2-3.4.