Caledonite and Gedrite Physical Properties

Caledonite

Gedrite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

5.6-5.763.15-3.259

1 7.18

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Fracture

Uneven

Cleavage

[001] perfect; [100] distinct

Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.

Mohs Hardness

2.5-35.5-6

2 10

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Chemical Composition

Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)

(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

Caledonite and Gedrite Chemical Formula

While comparing Caledonite and Gedrite 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 Caledonite and Gedrite chemical formula.

Chemical formula of Caledonite- Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Gedrite- (Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

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Caledonite and Gedrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Caledonite and Gedrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Caledonite and Gedrite Optical Properties during the identification of gemstone. Specific gravity of Caledonite is 3.15-3.259 whereas that of Gedrite is 3.15-3.259.