Brookite and Obsidian Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.87-4.14
2.35-2.60
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Conchoidal, ConchoidalWalter Schumann, Conchoidal
Cleavage
Poor on {120}, in traces on {001}
Not Available
Mohs Hardness
5.5-6
5-5.5
Chemical Composition
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Not Available
Brookite and Obsidian Chemical Formula
While comparing Brookite and Obsidian 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 Brookite and Obsidian chemical formula.
- Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
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Brookite and Obsidian Specific Gravity
Another important criteria for qualitative analysis of gemstones is Brookite and Obsidian Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brookite and Obsidian Optical Properties during the identification of gemstone. Specific gravity of Brookite is 2.35-2.60 whereas that of Obsidian is 2.35-2.60.