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Holtedahlite

Type Locality
Tingelstadtjern Quarry, Modum, Buskerud, Norway
Mineral Data
Mg2(PO4)(OH)
Dimorph Of: 
Strunz: 
8.BB.20
Physical Properties
Colour: 
Colourless
Crystal System: 
Trigonal
Hardness: 
4.5 - 5.0
Synonyms
Synonyms: 
IMA1976-054
Photos