Hibonite and Andradite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.84
3.70-4.10
Fracture
Subconchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
{0001} good, {10 1 0} parting
none
Mohs Hardness
7.5-8
6.5-7
Chemical Composition
(Ca,Ce)(Al,Ti,Mg)12O19
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Hibonite and Andradite Chemical Formula
While comparing Hibonite and Andradite 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 Hibonite and Andradite chemical formula.
- Chemical formula of Hibonite- (Ca,Ce)(Al,Ti,Mg)12O19
- Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Hibonite and Andradite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hibonite and Andradite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hibonite and Andradite Optical Properties during the identification of gemstone. Specific gravity of Hibonite is 3.70-4.10 whereas that of Andradite is 3.70-4.10.