Thomsonite and Montebrasite Physical Properties
Specific Gravity
2.25-2.40
2.98-3.10
Fracture
-
Uneven, Conchoidal
Cleavage
perfect on {010}; good on {100}
{100} Perfect, {110} Good, {011} Distinct
Mohs Hardness
5-5.5
5.5-6
Chemical Composition
NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references
Thomsonite and Montebrasite Chemical Formula
While comparing Thomsonite and Montebrasite 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 Thomsonite and Montebrasite chemical formula.
- Chemical formula of Thomsonite- NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Montebrasite- LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references
Thomsonite and Montebrasite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Thomsonite and Montebrasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thomsonite and Montebrasite Optical Properties during the identification of gemstone. Specific gravity of Thomsonite is 2.98-3.10 whereas that of Montebrasite is 2.98-3.10.