Calcite and Londonite Physical Properties

Calcite

Londonite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.67-2.733.34

1 7.18

1.5 Fracture

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

ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

1.6 Cleavage

Perfect on [10 1 1] three directions with angle of 74° 55

None

1.7 Mohs Hardness

3Not Available

2 10

1.8 Chemical Composition

CaCO 3Ulrich Henn and Claudio C.

(Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)

Calcite and Londonite Chemical Formula

While comparing Calcite and Londonite 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 Calcite and Londonite chemical formula.

Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
Chemical formula of Londonite- (Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)

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Calcite and Londonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Calcite and Londonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Calcite and Londonite Optical Properties during the identification of gemstone. Specific gravity of Calcite is 3.34 whereas that of Londonite is 3.34.