Legrandite and Nuummite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.98-4.04
  
3.18-3.37
  
Fracture
Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle
  
Conchoidal
  
Cleavage
Imperfect, poor one {100}
  
Perfect on 210
  
Mohs Hardness
4.5-5
  
5.5-6
  
Chemical Composition
Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Not Available
  
Legrandite and Nuummite Chemical Formula
While comparing Legrandite and Nuummite 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 Nuummite chemical formula.
- Chemical formula of Legrandite- Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
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Legrandite and Nuummite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Legrandite and Nuummite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Legrandite and Nuummite Optical Properties during the identification of gemstone. Specific gravity of Legrandite is 3.18-3.37 whereas that of Nuummite is 3.18-3.37.