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Caledonite and Herderite Physical Properties


Herderite and Caledonite Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
5.6-5.76   
2.90-3.02   

Fracture
Uneven, UnevenAnthony et al, Handbook of mineralogy (2001)   
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle   

Cleavage
[001] perfect; [100] distinct   
Indistinct on {110}   

Mohs Hardness
2.5-3   
5-5.5   

Chemical Composition
Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)   
CaBePO 4(F,OH)Ulrich Henn and Claudio C.   

Optical Properties >>
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Caledonite and Herderite Chemical Formula

While comparing Caledonite 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 Caledonite and Herderite chemical formula.

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Caledonite and Herderite Specific Gravity

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

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