Gahnospinel and Astrophyllite Physical Properties

Gahnospinel

Astrophyllite

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1 Physical Properties

2.1 Tenacity

Not Available

2.4 Solubility

Not Available

2.6 Durability

Not Available

2.7 Specific Gravity

3.65-4.553.2-3.4

1 7.18

2.8 Fracture

ConchoidalArthur Thomas, Gemstones (2009)

Uneven, Brittle, Metallic

2.9 Cleavage

None, but may exhibit slight parting

Perfect on [001] imperfect on [100]

2.10 Mohs Hardness

7.5-83

2 10

2.14 Chemical Composition

(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

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

Gahnospinel and Astrophyllite Chemical Formula

While comparing Gahnospinel 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 Gahnospinel and Astrophyllite chemical formula.

Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

Compare Blue Gemstones

Gahnospinel Vs Hydrogrossular

Gahnospinel Vs Jeremejevite

Gahnospinel Vs Indicolite Blue Tourmaline

Gahnospinel and Astrophyllite Specific Gravity

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