Pyromorphite and Augite Physical Properties

Pyromorphite

Augite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.5-7.13.19-3.56

1 7.18

1.5 Fracture

Uneven, ConchoidalArthur Thomas, Brittle, Metallic

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

1.6 Cleavage

Imperfect- [10 1 1]

{110} Perfect, {010} Indistinct

1.7 Mohs Hardness

3.5-45.5-6

2 10

1.8 Chemical Composition

Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)

(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)

Pyromorphite and Augite Chemical Formula

While comparing Pyromorphite and Augite 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 Augite chemical formula.

Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
Chemical formula of Augite- (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)

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Pyromorphite and Augite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyromorphite and Augite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyromorphite and Augite Optical Properties during the identification of gemstone. Specific gravity of Pyromorphite is 3.19-3.56 whereas that of Augite is 3.19-3.56.