Thaumasite and Grandidierite Physical Properties

Thaumasite

Grandidierite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.912.85-3.00

1 7.18

1.5 Fracture

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

Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven

1.6 Cleavage

Indistinct

Perfect

1.7 Mohs Hardness

3.57.5

2 10

1.8 Chemical Composition

Ca 6Si 2(CO 3) 2(SO 4) 2(OH) 12 · 24H 2OUlrich Henn and Claudio C.

(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

Thaumasite and Grandidierite Chemical Formula

While comparing Thaumasite and Grandidierite 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 Thaumasite and Grandidierite chemical formula.

Chemical formula of Thaumasite- Ca 6Si 2(CO 3) 2(SO 4) 2(OH) 12 · 24H 2OUlrich Henn and Claudio C.
Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

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Thaumasite and Grandidierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Thaumasite and Grandidierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thaumasite and Grandidierite Optical Properties during the identification of gemstone. Specific gravity of Thaumasite is 2.85-3.00 whereas that of Grandidierite is 2.85-3.00.