Pyromorphite and Hibonite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
6.5-7.1
3.84
Fracture
Uneven, ConchoidalArthur Thomas, Brittle, Metallic
Subconchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
Imperfect- [10 1 1]
{0001} good, {10 1 0} parting
Mohs Hardness
3.5-4
7.5-8
Chemical Composition
Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
(Ca,Ce)(Al,Ti,Mg)12O19
Pyromorphite and Hibonite Chemical Formula
While comparing Pyromorphite and Hibonite 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 Pyromorphite and Hibonite chemical formula.
- Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
- Chemical formula of Hibonite- (Ca,Ce)(Al,Ti,Mg)12O19
Pyromorphite and Hibonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pyromorphite and Hibonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyromorphite and Hibonite Optical Properties during the identification of gemstone. Specific gravity of Pyromorphite is 3.84 whereas that of Hibonite is 3.84.