Colemanite and Siderite Physical Properties
Specific Gravity
2.40-2.42
3.83-3.89
Fracture
-
Uneven, Conchoidal
Cleavage
{010} Perfect, {001} Distinct
Perfect on {01 1 1}
Mohs Hardness
4.5
3.5-4.5
Chemical Composition
Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Colemanite and Siderite Chemical Formula
While comparing Colemanite and Siderite 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 Colemanite and Siderite chemical formula.
- Chemical formula of Colemanite- Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Siderite- Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Colemanite and Siderite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Colemanite and Siderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Colemanite and Siderite Optical Properties during the identification of gemstone. Specific gravity of Colemanite is 3.83-3.89 whereas that of Siderite is 3.83-3.89.