Afghanite and Crocoite Physical Properties

Afghanite

Crocoite

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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

2.55-2.65

5.90-6.10

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle, Conchoidal, Brittle

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).

1.6 Cleavage

Perfect {10 1 0}

{110} Distinct, {001} Indistinct, {100} Indistinct

1.7 Mohs Hardness

5.5-6

2.5-3

1.8 Chemical Composition

(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)

PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Afghanite and Crocoite Chemical Formula

While comparing Afghanite and Crocoite 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 Afghanite and Crocoite chemical formula.

Chemical formula of Afghanite- (Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
Chemical formula of Crocoite- PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Afghanite and Crocoite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Afghanite and Crocoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Crocoite Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 5.90-6.10 whereas that of Crocoite is 5.90-6.10.