Londonite and Pleonaste Physical Properties

Londonite

Pleonaste

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.343.80

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

None

Not Available

1.7 Mohs Hardness

Not Available8

2 10

1.8 Chemical Composition

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

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

Londonite and Pleonaste Chemical Formula

While comparing Londonite and Pleonaste 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 Londonite and Pleonaste chemical formula.

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

Compare White Gemstones

Londonite Vs Mohawkite

Londonite Vs Montebrasite

Londonite Vs Milk Opal

Londonite and Pleonaste Specific Gravity

Another important criteria for qualitative analysis of gemstones is Londonite and Pleonaste Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Londonite and Pleonaste Optical Properties during the identification of gemstone. Specific gravity of Londonite is 3.80 whereas that of Pleonaste is 3.80.