Herderite and Hurlbutite Physical Properties

Herderite

Hurlbutite

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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

2.90-3.022.90

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Indistinct on {110}

None

1.7 Mohs Hardness

5-5.56

2 10

1.8 Chemical Composition

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

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

Herderite and Hurlbutite Chemical Formula

While comparing Herderite and Hurlbutite 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 Hurlbutite chemical formula.

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

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Herderite and Hurlbutite Specific Gravity

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