Astrophyllite and Periclase Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.2-3.4
3.7-3.9
Fracture
Uneven, Brittle, Metallic
Conchoidal, Brittle
Cleavage
Perfect on [001] imperfect on [100]
{001} perfect; {111} imperfect, may exhibit parting on , {011}
Chemical Composition
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
Astrophyllite and Periclase Chemical Formula
While comparing Astrophyllite and Periclase 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 Astrophyllite and Periclase chemical formula.
- Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
Astrophyllite and Periclase Specific Gravity
Another important criteria for qualitative analysis of gemstones is Astrophyllite and Periclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Periclase Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 3.7-3.9 whereas that of Periclase is 3.7-3.9.