Anhydrite and Blue John Physical Properties

Anhydrite

Blue John

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-2.983.00-3.25

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

3.5Not Available

2 10

1.8 Chemical Composition

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

CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Anhydrite and Blue John Chemical Formula

While comparing Anhydrite and Blue John 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 Anhydrite and Blue John chemical formula.

Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Blue John- CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Blue Gemstones

Anhydrite Vs Beryl

Anhydrite Vs Azurmalachite

Anhydrite Vs Black Opal

Anhydrite and Blue John Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anhydrite and Blue John Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anhydrite and Blue John Optical Properties during the identification of gemstone. Specific gravity of Anhydrite is 3.00-3.25 whereas that of Blue John is 3.00-3.25.