Commodity Code

apatite-gemstone

http://resource.geosciml.org/classifier/cgi/commodity-code/apatite-gemstone

unstar this property definition Apatite is a group of phosphate minerals, usually referring to hydroxylapatite, fluorapatite and chlorapatite, named for high concentrations of OH−, F− and Cl− ions, respectively, in the crystal. The formula of the admixture of the four most common endmembers is written as Ca10(PO4)6(OH,F,Cl)2, and the crystal unit cell formulae of the individual minerals are written as Ca10(PO4)6(OH)2, Ca10(PO4)6(F)2 and Ca10(PO4)6(Cl)2. more like this
star this property notation
01.03.02 more like this
ApatGe more like this
star this property source http://en.wikipedia.org/wiki/Apatite more like this
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Resource
Concept
star this property broader gemstones
star this property narrower apatite gemstone
star this property in scheme commodity code
star this property is primary topic of apatite gemstone& properties=definition