Humite and Variscite Physical Properties

Humite

Variscite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.20-3.322.42-2.58

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Poor

[010] perfect

1.7 Mohs Hardness

6-6.54-5

2 10

1.8 Chemical Composition

(Mg,Fe2+ ) 7(SiO 4) 3(F,OH) 2Anthony et al , Handbook of mineralogy (2001)

AlPO₄ · 2(H₂O)

Humite and Variscite Chemical Formula

While comparing Humite and Variscite 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 Humite and Variscite chemical formula.

Chemical formula of Humite- (Mg,Fe2+ ) 7(SiO 4) 3(F,OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Variscite- AlPO₄ · 2(H₂O)

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Humite and Variscite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Humite and Variscite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Humite and Variscite Optical Properties during the identification of gemstone. Specific gravity of Humite is 2.42-2.58 whereas that of Variscite is 2.42-2.58.