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Gahnospinel
Gahnospinel

Mottramite
Mottramite



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Gahnospinel
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Mottramite

Gahnospinel and Mottramite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Soluble

Durability

-
-

Specific Gravity

3.65-4.555.9
1 7.18
👆🏻

Fracture

Conchoidal
Sub-Conchoidal

Cleavage

None, but may exhibit slight parting
None observed

Mohs Hardness

7.5-83
2 10
👆🏻

Chemical Composition

(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
PbCu(VO4)(OH)

Gahnospinel and Mottramite Chemical Formula

While comparing Gahnospinel 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 Gahnospinel and Mottramite chemical formula.

  • Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
  • Chemical formula of Mottramite- PbCu(VO4)(OH)

Gahnospinel and Mottramite Specific Gravity

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