Stibiotantalite and Londonite Physical Properties

Stibiotantalite

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

Not Available3.34

1 7.18

1.5 Fracture

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

1.6 Cleavage

{???} Perfect

None

1.7 Mohs Hardness

5.5-6Not Available

2 10

1.8 Chemical Composition

SbTaO 4Ulrich Henn and Claudio C.

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

Stibiotantalite and Londonite Chemical Formula

While comparing Stibiotantalite 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 Stibiotantalite and Londonite chemical formula.

Chemical formula of Stibiotantalite- SbTaO 4Ulrich 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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Stibiotantalite and Londonite Specific Gravity

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