Plumbogummite and Legrandite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Soluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
4.014
  
3.98-4.04
  
Fracture
Uneven, Conchoidal
  
Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle
  
Cleavage
None
  
Imperfect, poor one {100}
  
Mohs Hardness
4-5
  
4.5-5
  
Chemical Composition
Not Available
  
Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Plumbogummite and Legrandite Chemical Formula
While comparing Plumbogummite 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 Plumbogummite and Legrandite chemical formula.
>- Chemical formula of Legrandite- Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Plumbogummite and Legrandite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Plumbogummite and Legrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Plumbogummite and Legrandite Optical Properties during the identification of gemstone. Specific gravity of Plumbogummite is 3.98-4.04 whereas that of Legrandite is 3.98-4.04.