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Calcite
Calcite

Forsterite
Forsterite



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Calcite
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Forsterite

Calcite and Forsterite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
-

Durability

-
-

Specific Gravity

2.67-2.733.23-3.26
1 7.18
👆🏻

Fracture

Conchoidal
Conchoidal

Cleavage

Perfect on [10 1 1] three directions with angle of 74° 55
Perfect on {010} imperfect on {100}

Mohs Hardness

36.5-7
2 10
👆🏻

Chemical Composition

CaCO 3Ulrich Henn and Claudio C.
Mg 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Calcite and Forsterite Chemical Formula

While comparing Calcite and Forsterite 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 Calcite and Forsterite chemical formula.

  • Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
  • Chemical formula of Forsterite- Mg 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Calcite and Forsterite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Calcite and Forsterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Calcite and Forsterite Optical Properties during the identification of gemstone. Specific gravity of Calcite is 3.23-3.26 whereas that of Forsterite is 3.23-3.26.