Eudialyte and Astrophyllite Physical Properties

Eudialyte

Astrophyllite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

H 2 SO 4

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.74-3.003.2-3.4

1 7.18

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009)

Uneven, Brittle, Metallic

1.6 Cleavage

Distinct on {0001} imperfect on {11 2 0}

Perfect on [001] imperfect on [100]

1.7 Mohs Hardness

5-5.53

2 10

1.8 Chemical Composition

Na 4(Ca,Ce) 2(Fe,Mn,Y)ZrSi 8O 22(OH,Cl) 2Ulrich Henn and Claudio C.

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

Eudialyte and Astrophyllite Chemical Formula

While comparing Eudialyte 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 Eudialyte and Astrophyllite chemical formula.

Chemical formula of Eudialyte- Na 4(Ca,Ce) 2(Fe,Mn,Y)ZrSi 8O 22(OH,Cl) 2Ulrich Henn and Claudio C.
Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

Compare Brown Gemstones

Eudialyte Vs Fluorapatite

Eudialyte Vs Franklinite

Eudialyte Vs Fluorite

Eudialyte and Astrophyllite Specific Gravity

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