Herderite and Verdite Physical Properties

Herderite

Verdite

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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

2.90-3.022.80-3.0

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

Indistinct on {110}

{110} Good

1.7 Mohs Hardness

5-5.53

2 10

1.8 Chemical Composition

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

NaFeS2•2(H2O)

Herderite and Verdite Chemical Formula

While comparing Herderite and Verdite 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 Herderite and Verdite chemical formula.

Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.
Chemical formula of Verdite- NaFeS2•2(H2O)

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Herderite and Verdite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Herderite and Verdite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Herderite and Verdite Optical Properties during the identification of gemstone. Specific gravity of Herderite is 2.80-3.0 whereas that of Verdite is 2.80-3.0.