Herderite and Nuummite Physical Properties

Herderite

Nuummite

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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

2.90-3.023.18-3.37

1 7.18

1.5 Fracture

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

Conchoidal

1.6 Cleavage

Indistinct on {110}

Perfect on 210

1.7 Mohs Hardness

5-5.55.5-6

2 10

1.8 Chemical Composition

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

Not Available

Herderite and Nuummite Chemical Formula

While comparing Herderite and Nuummite 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 Nuummite chemical formula.

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

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Herderite and Nuummite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Herderite and Nuummite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Herderite and Nuummite Optical Properties during the identification of gemstone. Specific gravity of Herderite is 3.18-3.37 whereas that of Nuummite is 3.18-3.37.