Stibiotantalite and Lapis lazuli Physical Properties

Stibiotantalite

Lapis lazuli

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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 Available2.50-3.00

1 7.18

1.5 Fracture

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

Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

{???} Perfect

3,6

1.7 Mohs Hardness

5.5-65.5

2 10

1.8 Chemical Composition

SbTaO 4Ulrich Henn and Claudio C.

The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)₈Al₆Si₆O₂₄(S,SO)₄

Stibiotantalite and Lapis lazuli Chemical Formula

While comparing Stibiotantalite and Lapis lazuli 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 Lapis lazuli chemical formula.

Chemical formula of Stibiotantalite- SbTaO 4Ulrich Henn and Claudio C.
Chemical formula of Lapis lazuli- The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)₈Al₆Si₆O₂₄(S,SO)₄

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Stibiotantalite and Lapis lazuli Specific Gravity

Another important criteria for qualitative analysis of gemstones is Stibiotantalite and Lapis lazuli Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Stibiotantalite and Lapis lazuli Optical Properties during the identification of gemstone. Specific gravity of Stibiotantalite is 2.50-3.00 whereas that of Lapis lazuli is 2.50-3.00.