Pleonaste and Londonite Physical Properties

Pleonaste

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

3.803.34

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Not Available

None

1.7 Mohs Hardness

8Not Available

2 10

1.8 Chemical Composition

(Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)

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

Pleonaste and Londonite Chemical Formula

While comparing Pleonaste 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 Pleonaste and Londonite chemical formula.

Chemical formula of Pleonaste- (Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)
Chemical formula of Londonite- (Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)

Compare Blue Gemstones

Pleonaste Vs Rubellite

Pleonaste Vs Rock Crystal

Pleonaste Vs Pyrophyllite

Pleonaste and Londonite Specific Gravity

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