Montebrasite and Gypsum Physical Properties

Montebrasite

Gypsum

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1 Physical Properties

1.1 Tenacity

Not Available

Flexible

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.98-3.102.20-2.40

1 7.18

1.5 Fracture

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

Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

{100} Perfect, {110} Good, {011} Distinct

Perfect on {010}, distinct on {100}

1.7 Mohs Hardness

5.5-62

2 10

1.8 Chemical Composition

LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references

CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

Montebrasite and Gypsum Chemical Formula

While comparing Montebrasite and Gypsum 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 Montebrasite and Gypsum chemical formula.

Chemical formula of Montebrasite- LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

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Montebrasite and Gypsum Specific Gravity

Another important criteria for qualitative analysis of gemstones is Montebrasite and Gypsum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Montebrasite and Gypsum Optical Properties during the identification of gemstone. Specific gravity of Montebrasite is 2.20-2.40 whereas that of Gypsum is 2.20-2.40.