Gibbsite and Ludlamite Physical Properties

Gibbsite

Ludlamite

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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

2.353.1-3.2

1 7.18

1.5 Fracture

Fibrous, Difficult, Fibrous

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

{001} Perfect

Vitreous, pearly on cleavage

1.7 Mohs Hardness

2.5-33-4

2 10

1.8 Chemical Composition

Al(OH)3

(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Gibbsite and Ludlamite Chemical Formula

While comparing Gibbsite and Ludlamite 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 Ludlamite chemical formula.

Chemical formula of Gibbsite- Al(OH)3
Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Gibbsite and Ludlamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gibbsite and Ludlamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gibbsite and Ludlamite Optical Properties during the identification of gemstone. Specific gravity of Gibbsite is 3.1-3.2 whereas that of Ludlamite is 3.1-3.2.