Gibbsite and Pleonaste Physical Properties

Gibbsite

Pleonaste

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.353.80

1 7.18

1.5 Fracture

Fibrous, Difficult, Fibrous

Not Available

1.6 Cleavage

{001} Perfect

Not Available

1.7 Mohs Hardness

2.5-38

2 10

1.8 Chemical Composition

Al(OH)3

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

Gibbsite and Pleonaste Chemical Formula

While comparing Gibbsite 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 Gibbsite and Pleonaste chemical formula.

Chemical formula of Gibbsite- Al(OH)3
Chemical formula of Pleonaste- (Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)

Compare Grey Gemstones

Gibbsite Vs Pallasite

Gibbsite Vs Vanadinite

Gibbsite Vs Galena

Gibbsite and Pleonaste Specific Gravity

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