ATHENA MINERALOGY |
Mineral: | NATROALUNITE-2R = synonym of NATROALUNITE-2c |
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Formula: | (Na,Ca,K)2Al6(SO4)4(OH)12 |
Crystal System: | Rhombohedral (Trigonal) |
Group: | Alunite supergroup. Alunite group |
References: | AM 67 (1982), 114; HB5 (2003); L 11 (2009), 40; MM 74 (2010), 919 |
Type Locality: | Monzo Hot Springs, Kusatsu-Shrane volcano, Okumanza, Gumma pref., Japan |
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