Galena and Pargasite Physical Properties

Galena

Pargasite

Add ⊕

1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.233.04-3.26

1 7.18

1.5 Fracture

Subconchoidal, Brittle, Metallic

Splintery, Brittle, Uneven

1.6 Cleavage

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

{110} perfect

1.7 Mohs Hardness

2.5-2.755-6

2 10

1.8 Chemical Composition

PbS

NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Galena and Pargasite Chemical Formula

While comparing Galena and Pargasite 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 Pargasite chemical formula.

Chemical formula of Galena- PbS
Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Grey Gemstones

Galena Vs Falcons Eye

Galena Vs Larvikite

Galena Vs Clinochlore

Galena and Pargasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Galena and Pargasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Galena and Pargasite Optical Properties during the identification of gemstone. Specific gravity of Galena is 3.04-3.26 whereas that of Pargasite is 3.04-3.26.