Rossmanite and Anhydrite Physical Properties

Rossmanite

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

32.90-2.98

1 7.18

1.5 Fracture

Brittle, Metallic

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

1.6 Cleavage

None

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

1.7 Mohs Hardness

Not Available3.5

2 10

1.8 Chemical Composition

◻(LiAl 2)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

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

Rossmanite and Anhydrite Chemical Formula

While comparing Rossmanite 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 Rossmanite and Anhydrite chemical formula.

Chemical formula of Rossmanite- ◻(LiAl 2)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Compare Gems Found in America

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Rossmanite Vs Serpentine

Rossmanite Vs Serandite

Rossmanite and Anhydrite Specific Gravity

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