Adamite and Herderite Physical Properties

Adamite

Herderite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.32-4.48

2.90-3.02

1.5 Fracture

Uneven, Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven, Subconchoidal, Brittle, Metallic, Brittle, Metallic

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

1.6 Cleavage

{101}, good; {010}, poor

Indistinct on {110}

1.7 Mohs Hardness

3.5

5-5.5

1.8 Chemical Composition

Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)

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

Adamite and Herderite Chemical Formula

While comparing Adamite 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 Adamite and Herderite chemical formula.

Chemical formula of Adamite- Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.

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Adamite and Herderite Specific Gravity

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