Astrophyllite and Fluorite Physical Properties

Astrophyllite

Fluorite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

slightly water soluble and in hot hydrochloric acid

1.3 Durability

Not Available

1.4 Specific Gravity

3.2-3.43.00-3.25

1 7.18

1.5 Fracture

Uneven, Brittle, Metallic

Subconchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

1.6 Cleavage

Perfect on [001] imperfect on [100]

Octahedral, perfect on {111}, parting on {011}

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

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

CaF₂

Astrophyllite and Fluorite Chemical Formula

While comparing Astrophyllite and Fluorite 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 Fluorite 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 Fluorite- CaF₂

Compare Green Gemstones

Astrophyllite Vs Blue John

Astrophyllite Vs Black Opal

Astrophyllite Vs Bloodstone Heliotrope

Astrophyllite and Fluorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Astrophyllite and Fluorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Fluorite Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 3.00-3.25 whereas that of Fluorite is 3.00-3.25.