AnsermetiteFianel Mine, Ausserferrera, Ferrera Valley, Hinterrhein Valley, Grischun, Switzerland
Photo: R. Bracco Latitude: 46°32'47"N
Longitude: 9°27'44"E
Grube Fianel, Ausserferrera, Val Ferrera, Hinterrheintal, Graubünden (Grisons; Grischun), Schweiz (Suisse; Svizzera)
An old iron and manganese mine.
The Fianel Fe-Mn deposit is of syn-sedimentary to diagenetic origin, embedded in Triassic marble belonging to the Starlera nappe. It underwent a polyphase Tertiary metamorphism, climaxing under blueschist- to green-schist facies conditions (Nussbaum et al. 1998).
The lenticular ore body (60x60x20 m) of Fianel was exploited for iron until the end of 19th century.
Mineral List
37 entries listed. 33 valid minerals. 3 type localities (valid minerals).
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References
- Brugger, J. and Berlepsch, P. (1996) Description and crystal structure of fianelite Mn2V(V,As)O7·2H2O, a new mineral from Fianel, Val Ferrera, (Graubunden, Switzerland). American Mineralogist (1996): 81: 1270-1276.
- Brugger J., Gieré R. (2000)Origin and distribution of some trace elements in metamorphosed Fe-Mn deposits, Val Ferrera, Eastern Swiss Alps. Canadian Mineralogist: 38: 1075-1101.
- Lapis (2004): 29(5): 40 .
- Brugger J., Gieré R., Grobéty B., Uspensky E. (1998) Scheelite-powellite and paraniite-(Y) from the Fe-Mn deposit at Fianel, Eastern Swiss Alps., American Mineralogist: 83: 1100-1110.
- Brugger, J. and Gieré, R. (1999) As, Sb, and Ce enrichment in minerals from a metamorphosed Fe-Mn deposit (Val Ferrera, Eastern Swiss Alps). Canadian Mineralogist: 37: 37-52.
- Brugger, J., Berleepsch, P., Meisser, N., and Armbruster, T. (2003) Ansermetite, MnV2O6·4H2O, a new mineral species with V5+ in five-fold coordination from Val Ferrera, Eastern Swiss Alps. Canadian Mineralogist: 41: 1423-1431.
- Brugger, J., Krivovichev, S., Meisser, N., Ansermet, S., and Armbruster, T. (2006) Scheuchzerite, Na(Mn,Mg)9[VSi9O28(OH)](OH)3, a new single-chain silicate. American Mineralogist: 91: 937-943.
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