Apophyllite and Wulfenite Physical Properties

Apophyllite

Wulfenite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.30-2.506.50-7.00

1 7.18

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009)

Irregular, Brittle, Conchoidal

1.6 Cleavage

Perfect on (001)

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

1.7 Mohs Hardness

4.5-53

2 10

1.8 Chemical Composition

KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

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

Apophyllite and Wulfenite Chemical Formula

While comparing Apophyllite and Wulfenite 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 Apophyllite and Wulfenite chemical formula.

Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
Chemical formula of Wulfenite- PbMoO 4Walter Schumann , Gemstones of the world (2001)

Compare Red Gemstones

Apophyllite Vs Brookite

Apophyllite Vs Blue John

Apophyllite Vs Boulder Opal

Apophyllite and Wulfenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apophyllite and Wulfenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apophyllite and Wulfenite Optical Properties during the identification of gemstone. Specific gravity of Apophyllite is 6.50-7.00 whereas that of Wulfenite is 6.50-7.00.