Friedelite and Opal Physical Properties
Physical Properties
Tenacity
Not Available
BrittleWalter Schumann
Solubility
Not Available
hot salt water
Durability
Not Available
Not Available
Specific Gravity
3.06-3.19
1.98-2.25
Fracture
UnevenArthur Thomas, Gemstones (2009) Tough, UnevenArthur Thomas, Gemstones (2009) Tough, Brittle, Uneven
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Cleavage
{010} Perfect
None
Mohs Hardness
4-5
5-6.5
Chemical Composition
Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
SiO2 · nH2O
Friedelite and Opal Chemical Formula
While comparing Friedelite and Opal 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 Friedelite and Opal chemical formula.
- Chemical formula of Friedelite- Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
- Chemical formula of Opal- SiO2 · nH2O
Friedelite and Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Friedelite and Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Friedelite and Opal Optical Properties during the identification of gemstone. Specific gravity of Friedelite is 1.98-2.25 whereas that of Opal is 1.98-2.25.
