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Humite
Humite

Afghanite
Afghanite



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Humite
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Afghanite

Humite and Afghanite Physical Properties

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1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.20-3.322.55-2.65
Amber
1 7.18
1.5 Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle, Conchoidal, Brittle
1.6 Cleavage
Poor
Perfect {10 1 0}
1.7 Mohs Hardness
6-6.55.5-6
Amber
2 10
1.8 Chemical Composition
(Mg,Fe2+ ) 7(SiO 4) 3(F,OH) 2Anthony et al , Handbook of mineralogy (2001)
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)

Humite and Afghanite Chemical Formula

While comparing Humite and Afghanite 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 Afghanite chemical formula.

  • Chemical formula of Humite- (Mg,Fe2+ ) 7(SiO 4) 3(F,OH) 2Anthony et al , Handbook of mineralogy (2001)
  • Chemical formula of Afghanite- (Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)

Humite and Afghanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Humite and Afghanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Humite and Afghanite Optical Properties during the identification of gemstone. Specific gravity of Humite is 2.55-2.65 whereas that of Afghanite is 2.55-2.65.