Feldspar and Londonite Physical Properties

Feldspar

Londonite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.56-2.753.34

1 7.18

1.5 Fracture

Uneven, Conchoidal, Uneven, Conchoidal, Gemstones of the world (2001)

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

1.6 Cleavage

two or three

None

1.7 Mohs Hardness

6-6.5Not Available

2 10

1.8 Chemical Composition

Not Available

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

Feldspar and Londonite Chemical Formula

While comparing Feldspar 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 Feldspar and Londonite chemical formula.

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

Compare Green Gemstones

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Feldspar Vs Garnet

Feldspar Vs Gaspite

Feldspar and Londonite Specific Gravity

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