Malachite and Legrandite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.25-4.10
3.98-4.04
Fracture
Conchoidal, Conchoidal, Gemstones (2009), Uneven
Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle
Cleavage
Perfect on { 2 01} fair on {010}
Imperfect, poor one {100}
Mohs Hardness
3.5-4
4.5-5
Chemical Composition
Cu2CO3(OH)2
Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Malachite and Legrandite Chemical Formula
While comparing Malachite 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 Malachite and Legrandite chemical formula.
- Chemical formula of Malachite- Cu2CO3(OH)2
- Chemical formula of Legrandite- Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Malachite and Legrandite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Malachite and Legrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Malachite and Legrandite Optical Properties during the identification of gemstone. Specific gravity of Malachite is 3.98-4.04 whereas that of Legrandite is 3.98-4.04.