Rossmanite and Forsterite Physical Properties

Rossmanite

Forsterite

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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

33.23-3.26

1 7.18

1.5 Fracture

Brittle, Metallic

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

1.6 Cleavage

None

Perfect on {010} imperfect on {100}

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)

Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Rossmanite and Forsterite Chemical Formula

While comparing Rossmanite and Forsterite 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 Forsterite 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 Forsterite- Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Gems Found in America

Rossmanite Vs Serpentine

Rossmanite Vs Serandite

Rossmanite Vs Scolecite

Rossmanite and Forsterite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rossmanite and Forsterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rossmanite and Forsterite Optical Properties during the identification of gemstone. Specific gravity of Rossmanite is 3.23-3.26 whereas that of Forsterite is 3.23-3.26.