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Legrandite
Legrandite

Howlite
Howlite



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Legrandite
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Howlite

Legrandite and Howlite Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.98-4.042.45-2.58
Amber
1 7.18
1.5 Fracture
Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
1.6 Cleavage
Imperfect, poor one {100}
None
1.7 Mohs Hardness
4.5-53-3.5
Amber
2 10
1.8 Chemical Composition
Zn 2(AsO 4)(OH) · H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Ca 2B 5SiO 9(OH) 5Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Legrandite and Howlite Chemical Formula

While comparing Legrandite 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 Legrandite and Howlite chemical formula.

  • Chemical formula of Legrandite- Zn 2(AsO 4)(OH) · H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Legrandite and Howlite Specific Gravity

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