Calcite and Herderite Physical Properties

Calcite

Herderite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.67-2.732.90-3.02

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Perfect on [10 1 1] three directions with angle of 74° 55

Indistinct on {110}

1.7 Mohs Hardness

35-5.5

2 10

1.8 Chemical Composition

CaCO 3Ulrich Henn and Claudio C.

CaBePO 4(F,OH)Ulrich Henn and Claudio C.

Calcite and Herderite Chemical Formula

While comparing Calcite and Herderite 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 Calcite and Herderite chemical formula.

Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.

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Calcite and Herderite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Calcite and Herderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Calcite and Herderite Optical Properties during the identification of gemstone. Specific gravity of Calcite is 2.90-3.02 whereas that of Herderite is 2.90-3.02.