Elbaite and Sphalerite Physical Properties

Elbaite

Sphalerite

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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

2.90-3.103.95-4.10

1 7.18

1.5 Fracture

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

UnevenWalter Schumann, Gemstones of the world (2001) More from other references, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Uneven

1.6 Cleavage

Poor/indistinct on {1120} and {1011}

{110} Perfect, {110} Perfect, {110} Perfect

1.7 Mohs Hardness

73.5-4

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

(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Elbaite and Sphalerite Chemical Formula

While comparing Elbaite and Sphalerite 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 Sphalerite 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 Sphalerite- (Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Elbaite and Sphalerite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Elbaite and Sphalerite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Elbaite and Sphalerite Optical Properties during the identification of gemstone. Specific gravity of Elbaite is 3.95-4.10 whereas that of Sphalerite is 3.95-4.10.