Ulexite and Afghanite Physical Properties

Ulexite

Afghanite

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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

1.65-1.992.55-2.65

1 7.18

1.5 Fracture

UnevenAnthony et al, Uneven, UnevenAnthony et al, Uneven, Brittle, Metallic

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

1.6 Cleavage

{010} Perfect, {110} Perfect

Perfect {10 1 0}

1.7 Mohs Hardness

2-2.55.5-6

2 10

1.8 Chemical Composition

NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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

Ulexite and Afghanite Chemical Formula

While comparing Ulexite 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 Ulexite and Afghanite chemical formula.

Chemical formula of Ulexite- NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Afghanite- (Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)

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Ulexite and Afghanite Specific Gravity

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