Caledonite and Legrandite Physical Properties
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
5.6-5.76
3.98-4.04
Fracture
Uneven, UnevenAnthony et al, Handbook of mineralogy (2001)
Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle
Cleavage
[001] perfect; [100] distinct
Imperfect, poor one {100}
Mohs Hardness
2.5-3
4.5-5
Chemical Composition
Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Caledonite and Legrandite Chemical Formula
While comparing Caledonite 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 Caledonite and Legrandite chemical formula.
- Chemical formula of Caledonite- Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Legrandite- Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Caledonite and Legrandite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Caledonite and Legrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Caledonite and Legrandite Optical Properties during the identification of gemstone. Specific gravity of Caledonite is 3.98-4.04 whereas that of Legrandite is 3.98-4.04.