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Hollandite
Hollandite

Ludlamite
Ludlamite



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Hollandite and Ludlamite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
5.05
3.1-3.2
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
4-6
3-4
1.8 Chemical Composition
Ba(Mn++++,Mn++)8O16
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael O’Donoghue , 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 O’Donoghue , Gems, Sixth Edition (2006) More from other references

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.