Arrojadite-(BaFe)Groppera Alp, San Giacomo Valley, Madesimo, Spluga Valley, Sondrio Province, Lombardy, Italy
Alpe Groppera (Val Scalcoggia-Val Groppera), Valle San Giacomo, Madesimo, Valle Spluga, Sondrio, Lombardia, Italia
References
- Demartin, F., Gramaccioli, C.M., Pilati, T., Sciesa, E. (1996): Sigismundite, (Ba,K,Pb)Na3(Ca,Sr)(Fe,Mg,Mn)14Al(OH)2(PO4)12, a new Ba-rich member of the arrojadite group from Spluga Valley, Italy. Canadian Mineralogist, 34, 827-834.
- Cámara, F., Oberti, R., Chopin, C., Medenbach, O. (2006): The arrojadite enigma: I. A new formula and a new model for the arrojadite structure. American Mineralogist, 91, 1249-1259.
- Chopin, C., Oberti, R., Cámara, F. (2006): The arrojadite enigma: II. Compositional space, new members and nomenclature of the group. American Mineralogist, 91, 1260-1270.
Mineral List
3 entries listed. 3 valid minerals. 1 type locality (valid mineral).
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