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Howlite
Howlite

Thulite
Thulite



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Howlite
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Thulite

Howlite and Thulite Physical Properties

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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
2.45-2.583.1
Amber
1 7.18
1.5 Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
1.6 Cleavage
None
Perfect {010} imperfect {100}
1.7 Mohs Hardness
3-3.56-7
Amber
2 10
1.8 Chemical Composition
Ca 2B 5SiO 9(OH) 5Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Ca2Al3(SiO4)3(OH)

Howlite and Thulite Chemical Formula

While comparing Howlite and Thulite 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 Howlite and Thulite chemical formula.

  • Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Thulite- Ca2Al3(SiO4)3(OH)

Howlite and Thulite Specific Gravity

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