Halite and Ludlamite Physical Properties

Halite

Ludlamite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Water-soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.173.1-3.2

1 7.18

1.5 Fracture

Conchoidal, Brittle, Metallic

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

1.6 Cleavage

Perfect {001}, three directions cubic

Vitreous, pearly on cleavage

1.7 Mohs Hardness

2.0-2.53-4

2 10

1.8 Chemical Composition

NaCl

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

Halite and Ludlamite Chemical Formula

While comparing Halite 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 Halite and Ludlamite chemical formula.

Chemical formula of Halite- NaCl
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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Halite and Ludlamite Specific Gravity

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