Humite and Pargasite Physical Properties

Humite

Pargasite

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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

3.20-3.323.04-3.26

1 7.18

1.7 Fracture

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

Splintery, Brittle, Uneven

1.8 Cleavage

Poor

{110} perfect

1.9 Mohs Hardness

6-6.55-6

2 10

2.2 Chemical Composition

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

NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Humite and Pargasite Chemical Formula

While comparing Humite and Pargasite 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 Pargasite chemical formula.

Chemical formula of Humite- (Mg,Fe2+ ) 7(SiO 4) 3(F,OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Humite and Pargasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Humite and Pargasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Humite and Pargasite Optical Properties during the identification of gemstone. Specific gravity of Humite is 3.04-3.26 whereas that of Pargasite is 3.04-3.26.