Rossmanite and Opal Physical Properties

Rossmanite

Opal

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1 Physical Properties

1.1 Tenacity

Not Available

BrittleWalter Schumann

1.2 Solubility

Not Available

hot salt water

1.3 Durability

Not Available

1.4 Specific Gravity

31.98-2.25

1 7.18

1.5 Fracture

Brittle, Metallic

Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle

1.6 Cleavage

None

1.7 Mohs Hardness

Not Available5-6.5

2 10

1.8 Chemical Composition

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

SiO₂ · nH₂O

Rossmanite and Opal Chemical Formula

While comparing Rossmanite and Opal 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 Opal 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 Opal- SiO₂ · nH₂O

Compare Gems Found in America

Rossmanite Vs Scolecite

Rossmanite Vs Serpentine

Rossmanite Vs Serandite

Rossmanite and Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rossmanite and Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rossmanite and Opal Optical Properties during the identification of gemstone. Specific gravity of Rossmanite is 1.98-2.25 whereas that of Opal is 1.98-2.25.