Cassiterite and Sphalerite Physical Properties

Cassiterite

Sphalerite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.86-7.033.95-4.10

1 7.18

1.5 Fracture

Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular

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

{100} imperfect, {110} indistinct; partings on {111} or {011}

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

1.7 Mohs Hardness

6-73.5-4

2 10

1.8 Chemical Composition

SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Cassiterite and Sphalerite Chemical Formula

While comparing Cassiterite 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 Cassiterite and Sphalerite chemical formula.

Chemical formula of Cassiterite- SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Sphalerite- (Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Cassiterite and Sphalerite Specific Gravity

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