Bastnasite and Astrophyllite Physical Properties

Bastnasite

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

4.95-5.03.2-3.4

1 7.18

1.5 Fracture

Uneven

Uneven, Brittle, Metallic

1.6 Cleavage

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

Perfect on [001] imperfect on [100]

1.7 Mohs Hardness

4-53

2 10

1.8 Chemical Composition

(Ce,La)(CO 3)FMichael 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)

Bastnasite and Astrophyllite Chemical Formula

While comparing Bastnasite 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 Bastnasite and Astrophyllite chemical formula.

Chemical formula of Bastnasite- (Ce,La)(CO 3)FMichael 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)

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Bastnasite and Astrophyllite Specific Gravity

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