Fluorapatite and Herderite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.1-3.25
2.90-3.02
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
Indistinct
Indistinct on {110}
Chemical Composition
Ca 5(PO 4) 3FAnthony et al , Handbook of mineralogy (2001)
CaBePO 4(F,OH)Ulrich Henn and Claudio C.
Fluorapatite and Herderite Chemical Formula
While comparing Fluorapatite 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 Fluorapatite and Herderite chemical formula.
- Chemical formula of Fluorapatite- Ca 5(PO 4) 3FAnthony et al , Handbook of mineralogy (2001)
- Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.
Fluorapatite and Herderite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Fluorapatite and Herderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fluorapatite and Herderite Optical Properties during the identification of gemstone. Specific gravity of Fluorapatite is 2.90-3.02 whereas that of Herderite is 2.90-3.02.