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Manganotantalite
Manganotantalite

Howlite
Howlite



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Manganotantalite
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Howlite

Manganotantalite and Howlite 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
Not Available2.45-2.58
Amber
1 7.18
1.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009)
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
1.6 Cleavage
Not Available
None
1.7 Mohs Hardness
5.5-6.53-3.5
Amber
2 10
1.8 Chemical Composition
MnTa 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
Ca 2B 5SiO 9(OH) 5Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Manganotantalite and Howlite Chemical Formula

While comparing Manganotantalite and Howlite 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 Manganotantalite and Howlite chemical formula.

  • Chemical formula of Manganotantalite- MnTa 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
  • Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Manganotantalite and Howlite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Manganotantalite and Howlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Manganotantalite and Howlite Optical Properties during the identification of gemstone. Specific gravity of Manganotantalite is 2.45-2.58 whereas that of Howlite is 2.45-2.58.