ATHENA MINERALOGY |
Mineral: | HEULANDITE-Ca |
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Formula: | (Ca0,5,Na,K)9[Al9Si27O72].24H2O |
Crystal System: | Monoclinic |
Group: | Zeolite group. Heulandite series |
IMA Number: | 1997 s.p. |
References: | AM 53 (1968), 1120; HB2/1 (1995); EJM 10 (1998), 1037; L 11(1999), 8; Microp. Mesop. Mat. 214 (2015), 127 |
Type Locality: | Faröe Islands (?) |
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