Formula : Ca(Y,Gd,Nd,Dy)4[CO3]7 * 9 H2O
System: orthorhombic Hardness:- Rarity:rare
Strunz id:V/D.3-60 -
NITRATES, CARBONATES and BORATES
Name origin: o honor Professor Lauri Lokka (1885–1966), Finnish mineralogist and Chief Chemist, Geological Survey of Finland, Helsinki, Finland.-
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