Galena and Apophyllite Physical Properties

Galena

Apophyllite

Add ⊕

1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.232.30-2.50

1 7.18

1.5 Fracture

Subconchoidal, Brittle, Metallic

Uneven, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

Cubic perfect on [001], parting on [111]

Perfect on (001)

1.7 Mohs Hardness

2.5-2.754.5-5

2 10

1.8 Chemical Composition

PbS

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

Galena and Apophyllite Chemical Formula

While comparing Galena and Apophyllite 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 Galena and Apophyllite chemical formula.

Chemical formula of Galena- PbS
Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

Compare Grey Gemstones

Galena Vs Falcons Eye

Galena Vs Clinochlore

Galena Vs Larvikite

Galena and Apophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Galena and Apophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Galena and Apophyllite Optical Properties during the identification of gemstone. Specific gravity of Galena is 2.30-2.50 whereas that of Apophyllite is 2.30-2.50.