Variscite and Astrophyllite Physical Properties

Variscite

Astrophyllite

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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

2.42-2.58

3.2-3.4

1.5 Fracture

Conchoidal, Splintery, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle

Uneven, Brittle, Metallic

1.6 Cleavage

[010] perfect

Perfect on [001] imperfect on [100]

1.7 Mohs Hardness

4-5

1.8 Chemical Composition

AlPO₄ · 2(H₂O)

(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

Variscite and Astrophyllite Chemical Formula

While comparing Variscite and Astrophyllite 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 Variscite and Astrophyllite chemical formula.

Chemical formula of Variscite- AlPO₄ · 2(H₂O)
Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

Compare Gems for Virgo

Variscite Vs Garnet

Variscite Vs Aragonite

Variscite Vs Amazonite

Variscite and Astrophyllite Specific Gravity

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