Gypsum and Ludlamite Physical Properties

Gypsum

Ludlamite

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1 Physical Properties

1.1 Tenacity

Flexible

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.20-2.403.1-3.2

1 7.18

1.5 Fracture

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

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

Perfect on {010}, distinct on {100}

Vitreous, pearly on cleavage

1.7 Mohs Hardness

23-4

2 10

1.8 Chemical Composition

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

(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Gypsum and Ludlamite Chemical Formula

While comparing Gypsum and Ludlamite 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 Gypsum and Ludlamite chemical formula.

Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Gypsum and Ludlamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gypsum and Ludlamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gypsum and Ludlamite Optical Properties during the identification of gemstone. Specific gravity of Gypsum is 3.1-3.2 whereas that of Ludlamite is 3.1-3.2.