Galena and Franklinite Physical Properties

Galena

Franklinite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.235.05-5.22

1 7.18

1.5 Fracture

Subconchoidal, Brittle, Metallic

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)

1.6 Cleavage

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

None

1.7 Mohs Hardness

2.5-2.755.5-6

2 10

1.8 Chemical Composition

PbS

(Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

Galena and Franklinite Chemical Formula

While comparing Galena and Franklinite 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 Franklinite chemical formula.

Chemical formula of Galena- PbS
Chemical formula of Franklinite- (Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

Compare Grey Gemstones

Galena Vs Falcons Eye

Galena Vs Larvikite

Galena Vs Clinochlore

Galena and Franklinite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Galena and Franklinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Galena and Franklinite Optical Properties during the identification of gemstone. Specific gravity of Galena is 5.05-5.22 whereas that of Franklinite is 5.05-5.22.