Chrome-Chalcedony and Apophyllite KF Physical Properties

Chrome-Chalcedony

Apophyllite KF

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.702.33-2.37

1 7.18

1.5 Fracture

Not Available

Uneven, Brittle, Uneven, Brittle, Uneven

1.6 Cleavage

Not Available

Perfect on {001}, imperfect on {110}

1.7 Mohs Hardness

6.5-74.5-5

2 10

1.8 Chemical Composition

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

(K,Na)Ca4Si8O20(F,OH)•8(H2O)

Chrome-Chalcedony and Apophyllite KF Chemical Formula

While comparing Chrome-Chalcedony and Apophyllite KF 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 Apophyllite KF chemical formula.

Chemical formula of Chrome-Chalcedony- SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)
Chemical formula of Apophyllite KF- (K,Na)Ca4Si8O20(F,OH)•8(H2O)

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Chrome-Chalcedony and Apophyllite KF Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chrome-Chalcedony and Apophyllite KF Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chrome-Chalcedony and Apophyllite KF Optical Properties during the identification of gemstone. Specific gravity of Chrome-Chalcedony is 2.33-2.37 whereas that of Apophyllite KF is 2.33-2.37.