Gedrite and Ludlamite Physical Properties

Gedrite

Ludlamite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.15-3.2593.1-3.2

1 7.18

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Fracture

Cleavage

Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.

Vitreous, pearly on cleavage

Mohs Hardness

5.5-63-4

2 10

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Chemical Composition

(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

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

Gedrite and Ludlamite Chemical Formula

While comparing Gedrite 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 Gedrite and Ludlamite chemical formula.

Chemical formula of Gedrite- (Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Brown Gemstones

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Gedrite and Ludlamite Specific Gravity

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