Astrophyllite and Pyrope Almandine Physical Properties

Astrophyllite

Pyrope Almandine

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.2-3.43.62-4.20

1 7.18

1.5 Fracture

Uneven, Brittle, Metallic

ConchoidalGemdat.org, Management Team (2012), ConchoidalGemdat.org, Management Team (2012)

1.6 Cleavage

Perfect on [001] imperfect on [100]

Not Available

1.7 Mohs Hardness

37-7.5

2 10

1.8 Chemical Composition

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

(Fe,Mg) 3Al 2(SiO 4) 3gemdat.org , Management Team (2012)

Astrophyllite and Pyrope Almandine Chemical Formula

While comparing Astrophyllite and Pyrope Almandine 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 Pyrope Almandine 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 Pyrope Almandine- (Fe,Mg) 3Al 2(SiO 4) 3gemdat.org , Management Team (2012)

Compare Green Gemstones

Astrophyllite Vs Blue John

Astrophyllite Vs Bloodstone Heliotrope

Astrophyllite Vs Black Opal

Astrophyllite and Pyrope Almandine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Astrophyllite and Pyrope Almandine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Pyrope Almandine Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 3.62-4.20 whereas that of Pyrope Almandine is 3.62-4.20.