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Umbalite
Umbalite

Mottramite
Mottramite



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Umbalite
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Mottramite

Umbalite and Mottramite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Soluble

Durability

-
-

Specific Gravity

3.62-4.335.9
1 7.18
👆🏻

Fracture

Uneven
Sub-Conchoidal

Cleavage

Indiscernible
None observed

Mohs Hardness

7-7.53
2 10
👆🏻

Chemical Composition

Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
PbCu(VO4)(OH)

Umbalite and Mottramite Chemical Formula

While comparing Umbalite and Mottramite 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 Umbalite and Mottramite chemical formula.

  • Chemical formula of Umbalite- Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
  • Chemical formula of Mottramite- PbCu(VO4)(OH)

Umbalite and Mottramite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Umbalite and Mottramite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Umbalite and Mottramite Optical Properties during the identification of gemstone. Specific gravity of Umbalite is 5.9 whereas that of Mottramite is 5.9.