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Feldspar
Feldspar

Mottramite
Mottramite



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Feldspar
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Mottramite

Feldspar and Mottramite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Soluble

Durability

-
-

Specific Gravity

2.56-2.755.9
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
Sub-Conchoidal

Cleavage

two or three
None observed

Mohs Hardness

6-6.53
2 10
👆🏻

Chemical Composition

KAlSi3O8
PbCu(VO4)(OH)

Feldspar and Mottramite Chemical Formula

While comparing Feldspar 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 Feldspar and Mottramite chemical formula.

  • Chemical formula of Feldspar- KAlSi3O8
  • Chemical formula of Mottramite- PbCu(VO4)(OH)

Feldspar and Mottramite Specific Gravity

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