Hurlbutite and Herderite Physical Properties

Hurlbutite

Herderite

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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

2.902.90-3.02

1 7.18

1.5 Fracture

ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

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

1.6 Cleavage

None

Indistinct on {110}

1.7 Mohs Hardness

65-5.5

2 10

1.8 Chemical Composition

CaBe 2(PO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Hurlbutite and Herderite Chemical Formula

While comparing Hurlbutite 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 Hurlbutite and Herderite chemical formula.

Chemical formula of Hurlbutite- CaBe 2(PO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.

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Hurlbutite and Herderite Specific Gravity

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