Meta-ankoleite
Meta-ankoleite is an IMA-recognized mineral species in the phosphate class, with the chemical formula K(UO₂)(PO₄)·3H₂O.
It crystallizes in the tetragonal crystal system (space group P4/nmm). It is a member of the Natroautunite structural group.
Key properties: specific gravity 3.54; optically uniaxial.
IMA symbol Mak, IMA status: approved, named in 1963.
A rare secondary mineral found in the weathered zone of a complex granite pegmatite (Mungenyi pegmatite, Uganda) and the sericitic matrix of a quartz sandstone (Sebungwe district, Zimbabwe).
It is found associated with Muscovite, albite, quartz, phosphuranylite, grayite, zircon (Mungenyi pegmatite, Uganda).
The name refers to the Ankole district, Uganda, from which it was first characterized.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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