Pectolite and Oligoclase Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.74-2.90
2.62-2.67
Fracture
Uneven, Gemstones (2009), Splintery
Gems, Sixth Edition (2006), Gems, Sixth Edition (2006), Uneven
Cleavage
Perfect on {100} and {001}
From the Greek, oligos and kasein, little cleavage.
Mohs Hardness
4.5-5
6-6.5
Chemical Composition
Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.
Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Pectolite and Oligoclase Chemical Formula
While comparing Pectolite and Oligoclase 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 Pectolite and Oligoclase chemical formula.
- Chemical formula of Pectolite- Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.
- Chemical formula of Oligoclase- Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Pectolite and Oligoclase Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pectolite and Oligoclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pectolite and Oligoclase Optical Properties during the identification of gemstone. Specific gravity of Pectolite is 2.62-2.67 whereas that of Oligoclase is 2.62-2.67.