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Pyromorphite
Pyromorphite

Allanite
Allanite



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Pyromorphite
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Allanite

Pyromorphite and Allanite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
6.5-7.1
Uneven, Conchoidal
Imperfect- [10 1 1]
3.5-4
Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
 
-
-
-
3.40-4.20
-
Indistinct
-9999
Ca(Ce,La,Y,Ca)Al2(Fe,Al)Si3O12(OH)

Pyromorphite and Allanite Chemical Formula

While comparing Pyromorphite and Allanite 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 Pyromorphite and Allanite chemical formula.

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Pyromorphite and Allanite Specific Gravity

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