Afghanite and Brucite Physical Properties

Afghanite

Brucite

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1 Physical Properties

1.1 Tenacity

Not Available

Sectile

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.65

2.39

1.5 Fracture

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

Irregular

1.6 Cleavage

Perfect {10 1 0}

Perfect on {0001}

1.7 Mohs Hardness

5.5-6

2.5

1.8 Chemical Composition

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

Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Afghanite and Brucite Chemical Formula

While comparing Afghanite and Brucite 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 Brucite 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 Brucite- Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Afghanite and Brucite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Afghanite and Brucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Brucite Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 2.39 whereas that of Brucite is 2.39.