Hurlbutite and Ettringite Physical Properties

Hurlbutite

Ettringite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Partially soluble in water

1.3 Durability

Not Available

1.4 Specific Gravity

2.901.77

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

None

Perfect on {10 1 0}

1.7 Mohs Hardness

62-2.5

2 10

1.8 Chemical Composition

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

Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Hurlbutite and Ettringite Chemical Formula

While comparing Hurlbutite and Ettringite 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 Ettringite chemical formula.

Chemical formula of Hurlbutite- CaBe 2(PO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Hurlbutite and Ettringite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hurlbutite and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hurlbutite and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Hurlbutite is 1.77 whereas that of Ettringite is 1.77.