Poldervaartite and Cavansite Physical Properties

Poldervaartite

Cavansite

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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

2.912.25-2.33

1 7.18

1.5 Fracture

Handbook of mineralogy (2001)

Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

None

Good on {010}

1.7 Mohs Hardness

Not Available3-4

2 10

1.8 Chemical Composition

(Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)

Ca(VO)Si4O10•4(H2O)

Poldervaartite and Cavansite Chemical Formula

While comparing Poldervaartite and Cavansite 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 Poldervaartite and Cavansite chemical formula.

Chemical formula of Poldervaartite- (Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)
Chemical formula of Cavansite- Ca(VO)Si4O10•4(H2O)

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Poldervaartite and Cavansite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Poldervaartite and Cavansite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Poldervaartite and Cavansite Optical Properties during the identification of gemstone. Specific gravity of Poldervaartite is 2.25-2.33 whereas that of Cavansite is 2.25-2.33.