Grandidierite and Agrellite Physical Properties

Grandidierite

Agrellite

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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

2.85-3.002.88

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

Perfect

perfect [110]

1.7 Mohs Hardness

7.55.5

2 10

1.8 Chemical Composition

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

NaCa2Si4O10F

Grandidierite and Agrellite Chemical Formula

While comparing Grandidierite and Agrellite 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 Agrellite chemical formula.

Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Chemical formula of Agrellite- NaCa2Si4O10F

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Grandidierite and Agrellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Grandidierite and Agrellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grandidierite and Agrellite Optical Properties during the identification of gemstone. Specific gravity of Grandidierite is 2.88 whereas that of Agrellite is 2.88.