Chiastolite and Herderite Physical Properties

Chiastolite

Herderite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.00-3.152.90-3.02

1 7.18

1.5 Fracture

Not Available

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

Not Available

Indistinct on {110}

1.7 Mohs Hardness

5-5.55-5.5

2 10

1.8 Chemical Composition

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006)

CaBePO 4(F,OH)Ulrich Henn and Claudio C.

Chiastolite and Herderite Chemical Formula

While comparing Chiastolite and Herderite 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 Chiastolite and Herderite chemical formula.

Chemical formula of Chiastolite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006)
Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.

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Chiastolite and Herderite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chiastolite and Herderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chiastolite and Herderite Optical Properties during the identification of gemstone. Specific gravity of Chiastolite is 2.90-3.02 whereas that of Herderite is 2.90-3.02.