Wulfenite and Ettringite Physical Properties

Wulfenite

Ettringite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

Partially soluble in water

1.3 Durability

Not Available

1.4 Specific Gravity

6.50-7.001.77

1 7.18

1.5 Fracture

Irregular, Brittle, Conchoidal

Not Available

1.6 Cleavage

On {011}, distinct; on {001}, {013}, indistinct

Perfect on {10 1 0}

1.7 Mohs Hardness

32-2.5

2 10

1.8 Chemical Composition

PbMoO 4Walter Schumann , Gemstones of the world (2001)

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

Wulfenite and Ettringite Chemical Formula

While comparing Wulfenite 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 Wulfenite and Ettringite chemical formula.

Chemical formula of Wulfenite- PbMoO 4Walter Schumann , Gemstones of the world (2001)
Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Compare Red Gemstones

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Wulfenite and Ettringite Specific Gravity

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