Fayalite and Allanite Physical Properties

Fayalite

Allanite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.3923.40-4.20

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

Not Available

1.6 Cleavage

{010} moderate, {100} imperfect

Not Available

1.7 Mohs Hardness

6.5-7Not Available

2 10

1.8 Chemical Composition

Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Not Available

Fayalite and Allanite Chemical Formula

While comparing Fayalite and Allanite 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 Fayalite and Allanite chemical formula.

Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Yellow Gemstones

Fayalite Vs Garnet

Fayalite Vs Gadolinium Gallium Garnet

Fayalite Vs Hackmanite

Fayalite and Allanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fayalite and Allanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fayalite and Allanite Optical Properties during the identification of gemstone. Specific gravity of Fayalite is 3.40-4.20 whereas that of Allanite is 3.40-4.20.