Bustamite and Pargasite Physical Properties

Bustamite

Pargasite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Partly soluble in HCl.

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.32-3.433.04-3.26

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

Splintery, Brittle, Uneven

1.6 Cleavage

{100} perfect; {110} and {1 1 0} good; {010} poor

{110} perfect

1.7 Mohs Hardness

5.5-65-6

2 10

1.8 Chemical Composition

(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Bustamite and Pargasite Chemical Formula

While comparing Bustamite and Pargasite 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 Bustamite and Pargasite chemical formula.

Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Red Gemstones

Bustamite Vs Chrome-Chalcedony

Bustamite Vs Chondrodite

Bustamite Vs Chambersite

Bustamite and Pargasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bustamite and Pargasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Pargasite Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 3.04-3.26 whereas that of Pargasite is 3.04-3.26.