Purpurite and Andradite Physical Properties

Purpurite

Andradite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.2-3.43.70-4.10

1 7.18

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle

Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

[100] [001] perfect

none

1.7 Mohs Hardness

4-4.56.5-7

2 10

1.8 Chemical Composition

MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Purpurite and Andradite Chemical Formula

While comparing Purpurite and Andradite 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 Purpurite and Andradite chemical formula.

Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Compare Violet Gemstones

Purpurite Vs Sapphire

Purpurite Vs Sardonyx

Purpurite Vs Sard

Purpurite and Andradite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Purpurite and Andradite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Purpurite and Andradite Optical Properties during the identification of gemstone. Specific gravity of Purpurite is 3.70-4.10 whereas that of Andradite is 3.70-4.10.