Ludlamite and Halite Physical Properties

Ludlamite

Halite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Water-soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.1-3.22.17

1 7.18

1.5 Fracture

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

Conchoidal, Brittle, Metallic

1.6 Cleavage

Vitreous, pearly on cleavage

Perfect {001}, three directions cubic

1.7 Mohs Hardness

3-42.0-2.5

2 10

1.8 Chemical Composition

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

NaCl

Ludlamite and Halite Chemical Formula

While comparing Ludlamite and Halite 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 Ludlamite and Halite chemical formula.

Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Halite- NaCl

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Ludlamite and Halite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ludlamite and Halite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ludlamite and Halite Optical Properties during the identification of gemstone. Specific gravity of Ludlamite is 2.17 whereas that of Halite is 2.17.