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Augelite
Augelite

Mottramite
Mottramite



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Augelite
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Mottramite

Augelite and Mottramite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Soluble

Durability

-
-

Specific Gravity

2.70-2.755.9
1 7.18
👆🏻

Fracture

Conchoidal
Sub-Conchoidal

Cleavage

From the Greek for luster, for its pearly luster on the cleavage.
None observed

Mohs Hardness

4.5-53
2 10
👆🏻

Chemical Composition

Al 2(PO 4)(OH) 3Michael O’Donoghue , Gems, Sixth Edition (2006)
PbCu(VO4)(OH)

Augelite and Mottramite Chemical Formula

While comparing Augelite 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 Augelite and Mottramite chemical formula.

  • Chemical formula of Augelite- Al 2(PO 4)(OH) 3Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Mottramite- PbCu(VO4)(OH)

Augelite and Mottramite Specific Gravity

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