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Mottramite
Mottramite

Humite
Humite



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Mottramite
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Humite

Mottramite and Humite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
Soluble
-
5.9
Sub-Conchoidal
None observed
3
PbCu(VO4)(OH)
 
Brittle
-
-
3.20-3.32
Uneven, Conchoidal
Poor
6-6.5
(Mg,Fe2+ ) 7(SiO 4) 3(F,OH) 2Anthony et al , Handbook of mineralogy (2001)

Mottramite and Humite Chemical Formula

While comparing Mottramite and Humite 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 Mottramite and Humite chemical formula.

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Mottramite and Humite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mottramite and Humite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mottramite Vs Humite during the identification of gemstone. Specific gravity of Mottramite is whereas that of Humite is .