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Phenakite
Phenakite

Langbeinite
Langbeinite



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Phenakite
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Langbeinite

Phenakite and Langbeinite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

-
Slowly dissolves in water

Durability

-
-

Specific Gravity

2.90-2.98-9999
1 7.18
👆🏻

Fracture

Conchoidal, ConchoidalWalter Schumann
Conchoidal

Cleavage

Distinct on {11 2 0}, imperfect on {10 1 1}
None

Mohs Hardness

7.5-83.5-4
2 10
👆🏻

Chemical Composition

Be 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
K2Mg2(SO4)3

Phenakite and Langbeinite Chemical Formula

While comparing Phenakite and Langbeinite 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 Phenakite and Langbeinite chemical formula.

  • Chemical formula of Phenakite- Be 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Langbeinite- K2Mg2(SO4)3

Phenakite and Langbeinite Specific Gravity

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