Caledonite and Creedite Physical Properties

Caledonite

Creedite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.6-5.762.70

1 7.18

1.5 Fracture

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

Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

[001] perfect; [100] distinct

Perfect on {100}

1.7 Mohs Hardness

2.5-34.5

2 10

1.8 Chemical Composition

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

Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

Caledonite and Creedite Chemical Formula

While comparing Caledonite and Creedite 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 Creedite 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 Creedite- Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

Compare Blue Gemstones

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Caledonite Vs Common Opal

Caledonite Vs Chrysocolla

Caledonite and Creedite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Caledonite and Creedite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Caledonite and Creedite Optical Properties during the identification of gemstone. Specific gravity of Caledonite is 2.70 whereas that of Creedite is 2.70.