Chrome-Chalcedony and Polyhalite Physical Properties

Chrome-Chalcedony

Polyhalite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.702.78

1 7.18

1.5 Fracture

Not Available

Conchoidal, Brittle

1.6 Cleavage

Not Available

Perfect on {10 1 }; parting on {010}

1.7 Mohs Hardness

6.5-73.5

2 10

1.8 Chemical Composition

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

Not Available

Chrome-Chalcedony and Polyhalite Chemical Formula

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

Chemical formula of Chrome-Chalcedony- SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)

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Chrome-Chalcedony and Polyhalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chrome-Chalcedony and Polyhalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chrome-Chalcedony and Polyhalite Optical Properties during the identification of gemstone. Specific gravity of Chrome-Chalcedony is 2.78 whereas that of Polyhalite is 2.78.