Elbaite and Crocoite Physical Properties

Elbaite

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

2.90-3.105.90-6.10

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Poor/indistinct on {1120} and {1011}

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

1.7 Mohs Hardness

72.5-3

2 10

1.8 Chemical Composition

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references

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

Elbaite and Crocoite Chemical Formula

While comparing Elbaite 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 Elbaite and Crocoite chemical formula.

Chemical formula of Elbaite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
Chemical formula of Crocoite- PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Elbaite and Crocoite Specific Gravity

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