Purpurite and Chrome-Chalcedony Physical Properties

Purpurite

Chrome-Chalcedony

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.2-3.42.55-2.70

1 7.18

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle

Not Available

1.6 Cleavage

[100] [001] perfect

Not Available

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

SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)

Purpurite and Chrome-Chalcedony Chemical Formula

While comparing Purpurite and Chrome-Chalcedony 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 Chrome-Chalcedony chemical formula.

Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Chrome-Chalcedony- SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)

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Purpurite and Chrome-Chalcedony Specific Gravity

Another important criteria for qualitative analysis of gemstones is Purpurite and Chrome-Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Purpurite and Chrome-Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Purpurite is 2.55-2.70 whereas that of Chrome-Chalcedony is 2.55-2.70.