Grandidierite and Adamite Physical Properties

Grandidierite

Adamite

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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

2.85-3.004.32-4.48

1 7.18

1.5 Fracture

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

Uneven, Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven, Subconchoidal, Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

Perfect

{101}, good; {010}, poor

1.7 Mohs Hardness

7.53.5

2 10

1.8 Chemical Composition

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

Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)

Grandidierite and Adamite Chemical Formula

While comparing Grandidierite and Adamite 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 Grandidierite and Adamite chemical formula.

Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Chemical formula of Adamite- Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)

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Grandidierite and Adamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Grandidierite and Adamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grandidierite and Adamite Optical Properties during the identification of gemstone. Specific gravity of Grandidierite is 4.32-4.48 whereas that of Adamite is 4.32-4.48.