Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:ASHCROFTINE-(Y)
Formula:K5Na5(Y,Ca)12Si28O70(OH)2(CO3)8 · 8H2O
Crystal System:Quadratic (Tetragonal)
Strunz Nr:8/F.36-30
References:MM 37 (1969), 515; HB2/1 (1995)
Type Locality:Pocket K, Narsarsuk, Julianehaab distr., Greenland

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