Hollandite and Ludlamite Physical Properties

Hollandite

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

5.053.1-3.2

1 7.18

1.5 Fracture

Brittle, Metallic

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

1.6 Cleavage

Distinct / Good, Prismatic

Vitreous, pearly on cleavage

1.7 Mohs Hardness

4-63-4

2 10

1.8 Chemical Composition

Ba(Mn++++,Mn++)8O16

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

Hollandite and Ludlamite Chemical Formula

While comparing Hollandite 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 Hollandite and Ludlamite chemical formula.

Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
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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Hollandite and Ludlamite Specific Gravity

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