Title
hydroxylapatite
Composition
Ca5(PO4)3(OH)
Crystal System
Hexagonal
Status at Tsumeb
Confirmed
Abundance
Extremely rare
Distribution
Second oxidation zone.
Paragenesis
Supergene.
Type Locality
No
Entry Type
Species TSNB173
General Notes
Hydroxylapatite is part of the type assemblage for hermannroseite (Schlüter et al. 2011), where it occurs in botryoidal crusts comprising alternating microcrystalline sequences of conichalcite, hermannroseite, hydroxylapatite, pseudomalachite and whitlockite. In this occurrence, the hydroxylapatite is coloured black by manganese oxides.
Associated Minerals
conichalcite; hermannroseite; pseudomalachite; whitlockite
