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Mottramite
Mottramite

Amethyst
Amethyst



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Mottramite
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Amethyst

Mottramite and Amethyst Physical Properties

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)
 
-
insoluble in common solvents
-
2.65
Conchoidal, ConchoidalWalter Schumann
Indiscernible
7
SiO2

Mottramite and Amethyst Chemical Formula

While comparing Mottramite and Amethyst 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 Amethyst chemical formula.

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Mottramite and Amethyst Specific Gravity

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