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Pollucite
Pollucite

Annabergite
Annabergite



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Pollucite
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Annabergite

Pollucite and Annabergite Physical Properties

Physical Properties

Tenacity

Brittle
Sectile

Solubility

Readily soluble in HF
-

Durability

-
-

Specific Gravity

2.86-2.943.07
1 7.18
👆🏻

Fracture

Conchoidal, Uneven
-

Cleavage

None observed
Perfect on {010}, indistinct on {100} and {102}

Mohs Hardness

6.5-72
2 10
👆🏻

Chemical Composition

(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Ni3(AsO4)2•8(H2O)

Pollucite and Annabergite Chemical Formula

While comparing Pollucite and Annabergite 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 Pollucite and Annabergite chemical formula.

  • Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
  • Chemical formula of Annabergite- Ni3(AsO4)2•8(H2O)

Pollucite and Annabergite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pollucite and Annabergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pollucite and Annabergite Optical Properties during the identification of gemstone. Specific gravity of Pollucite is 3.07 whereas that of Annabergite is 3.07.