Hematite and Astrophyllite Physical Properties

Hematite

Astrophyllite

Add ⊕

1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.00-5.303.2-3.4

1 7.18

1.5 Fracture

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

Uneven, Brittle, Metallic

1.6 Cleavage

None, may show partings on {0001} and {10 1 1}

Perfect on [001] imperfect on [100]

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

Fe 2O 3Arthur Thomas , Gemstones (2009)

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

Hematite and Astrophyllite Chemical Formula

While comparing Hematite 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 Hematite and Astrophyllite chemical formula.

Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)
Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

Compare Gems for Aquarius

Hematite Vs Turquoise

Hematite Vs Angelite

Hematite and Astrophyllite Specific Gravity

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