Strontianite and Anhydrite Physical Properties

Strontianite

Anhydrite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.63-3.792.90-2.98

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

{110} Good

Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.

1.7 Mohs Hardness

3.53.5

2 10

1.8 Chemical Composition

SrCO 3Walter Schumann , Gemstones of the world (2001) More from other references

CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Strontianite and Anhydrite Chemical Formula

While comparing Strontianite and Anhydrite 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 Strontianite and Anhydrite chemical formula.

Chemical formula of Strontianite- SrCO 3Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Strontianite and Anhydrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Strontianite and Anhydrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Strontianite and Anhydrite Optical Properties during the identification of gemstone. Specific gravity of Strontianite is 2.90-2.98 whereas that of Anhydrite is 2.90-2.98.