Kozoite-(La)
Kozoite-(La) is an IMA-recognized mineral species in the carbonate class, with the chemical formula La(CO₃)(OH).
It crystallizes in the orthorhombic crystal system (space group Pmcn). It is a member of the Ancylite structural group.
Key properties: specific gravity 4.16; White streak; Vitreous luster.
IMA symbol Koz-La, IMA status: approved, named in 2002.
Found in cavities in an alkali olivine basalt lava flow.
It is found associated with Kozoite-(Nd), lanthanite-(Nd), kimuraite-(Y), lokkaite-(Y), calcite, aragonite, opal (variety hyalite).
A suffix indicates the La-dominant analogue of kozoite-(Nd), which honors Professor Kozo Nagashima (1925-1985).
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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