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Howlite
Howlite

Legrandite
Legrandite



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Howlite
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Legrandite

Howlite and Legrandite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.45-2.583.98-4.04
Amber
1 7.18
1.5 Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle
1.6 Cleavage
None
Imperfect, poor one {100}
1.7 Mohs Hardness
3-3.54.5-5
Amber
2 10
1.8 Chemical Composition
Ca 2B 5SiO 9(OH) 5Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Zn 2(AsO 4)(OH) · H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Howlite and Legrandite Chemical Formula

While comparing Howlite and Legrandite 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 Legrandite 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 Legrandite- Zn 2(AsO 4)(OH) · H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Howlite and Legrandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Howlite and Legrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Howlite and Legrandite Optical Properties during the identification of gemstone. Specific gravity of Howlite is 3.98-4.04 whereas that of Legrandite is 3.98-4.04.