Rossmanite and Sard Physical Properties

Rossmanite

Sard

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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

32.58-2.63

1 7.18

1.5 Fracture

Brittle, Metallic

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

None

Not Available

1.7 Mohs Hardness

Not Available6.5-7

2 10

1.8 Chemical Composition

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

SiO 2Ulrich Henn and Claudio C.

Rossmanite and Sard Chemical Formula

While comparing Rossmanite and Sard 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 Sard 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 Sard- SiO 2Ulrich Henn and Claudio C.

Compare Gems Found in America

Rossmanite Vs Serandite

Rossmanite Vs Scolecite

Rossmanite Vs Serpentine

Rossmanite and Sard Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rossmanite and Sard Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rossmanite and Sard Optical Properties during the identification of gemstone. Specific gravity of Rossmanite is 2.58-2.63 whereas that of Sard is 2.58-2.63.