Epidote and Astrophyllite Physical Properties

Epidote

Astrophyllite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.25-3.50

3.2-3.4

1.5 Fracture

Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Fibrous

Uneven, Brittle, Metallic

1.6 Cleavage

{001} perfect and {100} imperfect

Perfect on [001] imperfect on [100]

1.7 Mohs Hardness

6-7

1.8 Chemical Composition

CaAl 2(Fe3+ ,Al)Si 3O 12(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

Epidote and Astrophyllite Chemical Formula

While comparing Epidote and Astrophyllite 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 Epidote and Astrophyllite chemical formula.

Chemical formula of Epidote- CaAl 2(Fe3+ ,Al)Si 3O 12(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

Compare Brown Gemstones

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Epidote Vs Fluorite

Epidote Vs Fluorapatite

Epidote and Astrophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Epidote and Astrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Epidote and Astrophyllite Optical Properties during the identification of gemstone. Specific gravity of Epidote is 3.2-3.4 whereas that of Astrophyllite is 3.2-3.4.