Zoisite and Nuummite Physical Properties

Zoisite

Nuummite

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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

3.20-3.503.18-3.37

1 7.18

1.5 Fracture

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Even

Conchoidal

1.6 Cleavage

Perfect {010} imperfect {100}

Perfect on 210

1.7 Mohs Hardness

6-75.5-6

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

Not Available

Zoisite and Nuummite Chemical Formula

While comparing Zoisite and Nuummite 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 Zoisite and Nuummite chemical formula.

Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)

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Zoisite and Nuummite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Zoisite and Nuummite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zoisite and Nuummite Optical Properties during the identification of gemstone. Specific gravity of Zoisite is 3.18-3.37 whereas that of Nuummite is 3.18-3.37.