Astrophyllite and Shigaite Physical Properties

Astrophyllite

Shigaite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

Moderately ﬂexible

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.2-3.42.32

1 7.18

1.5 Fracture

Uneven, Brittle, Metallic

Flexible Flexible fragments.

1.6 Cleavage

Perfect on [001] imperfect on [100]

Perfect on {0001}

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)

Not Available

Astrophyllite and Shigaite Chemical Formula

While comparing Astrophyllite and Shigaite 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 Shigaite chemical formula.

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

Compare Green Gemstones

Astrophyllite Vs Bloodstone Heliotrope

Astrophyllite Vs Blue John

Astrophyllite Vs Black Opal

Astrophyllite and Shigaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Astrophyllite and Shigaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Shigaite Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 2.32 whereas that of Shigaite is 2.32.