Astrophyllite and Proustite Physical Properties

Astrophyllite

Proustite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.2-3.45.51-5.64

1 7.18

1.5 Fracture

Uneven, Brittle, Metallic

Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

Perfect on [001] imperfect on [100]

Distinct on {10 1 1}

1.7 Mohs Hardness

32.5

2 10

1.8 Chemical Composition

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

Ag 3AsS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Astrophyllite and Proustite Chemical Formula

While comparing Astrophyllite and Proustite 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 Proustite 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 Proustite- Ag 3AsS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Green Gemstones

Astrophyllite Vs Blue John

Astrophyllite Vs Bloodstone Heliotrope

Astrophyllite Vs Black Opal

Astrophyllite and Proustite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Astrophyllite and Proustite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Proustite Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 5.51-5.64 whereas that of Proustite is 5.51-5.64.