Malachite and Umbalite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.25-4.10
3.62-4.33
Fracture
Conchoidal, Conchoidal, Gemstones (2009), Uneven
Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)
Cleavage
Perfect on { 2 01} fair on {010}
Not Available
Mohs Hardness
3.5-4
7-7.5
Chemical Composition
Cu2CO3(OH)2
Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
Malachite and Umbalite Chemical Formula
While comparing Malachite and Umbalite 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 Umbalite chemical formula.
- Chemical formula of Malachite- Cu2CO3(OH)2
- Chemical formula of Umbalite- Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
Malachite and Umbalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Malachite and Umbalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Malachite and Umbalite Optical Properties during the identification of gemstone. Specific gravity of Malachite is 3.62-4.33 whereas that of Umbalite is 3.62-4.33.