Rossmanite and Ettringite Physical Properties

Rossmanite

Ettringite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Partially soluble in water

1.3 Durability

Not Available

1.4 Specific Gravity

31.77

1 7.18

1.5 Fracture

Brittle, Metallic

Not Available

1.6 Cleavage

None

Perfect on {10 1 0}

1.7 Mohs Hardness

Not Available2-2.5

2 10

1.8 Chemical Composition

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

Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Rossmanite and Ettringite Chemical Formula

While comparing Rossmanite and Ettringite 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 Ettringite 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 Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Compare Gems Found in America

Rossmanite Vs Scolecite

Rossmanite Vs Serandite

Rossmanite Vs Serpentine

Rossmanite and Ettringite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rossmanite and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rossmanite and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Rossmanite is 1.77 whereas that of Ettringite is 1.77.