Thulite and Spessartine Physical Properties

Thulite

Spessartine

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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

3.1

4.12-4.18

1.5 Fracture

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

ConchoidalArthur Thomas, Conchoidal, Brittle

1.6 Cleavage

Perfect {010} imperfect {100}

{???} Distinct

1.7 Mohs Hardness

6-7

7-7.5

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

Mn 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Thulite and Spessartine Chemical Formula

While comparing Thulite and Spessartine 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 Thulite and Spessartine chemical formula.

Chemical formula of Thulite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Spessartine- Mn 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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Thulite and Spessartine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Thulite and Spessartine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thulite and Spessartine Optical Properties during the identification of gemstone. Specific gravity of Thulite is 4.12-4.18 whereas that of Spessartine is 4.12-4.18.