Chiastolite and Galena Physical Properties

Chiastolite

Galena

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.00-3.156.23

1 7.18

1.5 Fracture

Not Available

Subconchoidal, Brittle, Metallic

1.6 Cleavage

Not Available

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

1.7 Mohs Hardness

5-5.52.5-2.75

2 10

1.8 Chemical Composition

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006)

PbS

Chiastolite and Galena Chemical Formula

While comparing Chiastolite and Galena 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 Chiastolite and Galena chemical formula.

Chemical formula of Chiastolite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006)
Chemical formula of Galena- PbS

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Chiastolite and Galena Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chiastolite and Galena Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chiastolite and Galena Optical Properties during the identification of gemstone. Specific gravity of Chiastolite is 6.23 whereas that of Galena is 6.23.