Astrophyllite and Bastnasite Physical Properties

Astrophyllite

Bastnasite

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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

3.2-3.44.95-5.0

1 7.18

1.5 Fracture

Uneven, Brittle, Metallic

Uneven

1.6 Cleavage

Perfect on [001] imperfect on [100]

Imperfect to indistinct on {10 1 0}, parting on {0001}

1.7 Mohs Hardness

34-5

2 10

1.8 Chemical Composition

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

(Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Astrophyllite and Bastnasite Chemical Formula

While comparing Astrophyllite and Bastnasite 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 Bastnasite 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 Bastnasite- (Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Astrophyllite and Bastnasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Astrophyllite and Bastnasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Bastnasite Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 4.95-5.0 whereas that of Bastnasite is 4.95-5.0.