Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:RALSTONITE
Formula:NaxMgxAl2-x(F,OH)6 · H2O
Crystal System:Cubic
Strunz Nr:3/C.03-60
Group:Pyrochlore Group related
References:MM 54 (1990), 599; HB3 (1997)
Type Locality:Arksuk Fjord, Ivigtut, Greenland
Comments:Halide structurally related to Pyrochlore Group

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