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Cerchiara Mine, Borghetto Vara, Vara Valley, La Spezia Province, Liguria, Italy

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Latitude & Longitude (WGS84): 44° 11' 57'' North , 9° 42' 1'' East
Latitude & Longitude (decimal): 44.19944,9.70028
Köppen climate type:Csb : Warm-summer Mediterranean climate
Name(s) in local language(s):Miniera di Cerchiara, Borghetto Vara / Pignone, Val di Vara, La Spezia, Liguria, Italia


This area [which is situated in the municipalities of Borghetto Vara and Pignone, near Faggiona (Pignone)] is certainly known since 1600, when hematite, associated to Mn minerals, was mined by locals to extract iron. The deliberate mining of Mn minerals started in 1790 and ended after WW II.

The Mn minerals are bound to jasper formations of Jurassic age.

Furthermore, some minerals (aragonite, serpentine subgroup minerals, etc.) are not related to the manganese mineralisation, although they occur inside the territory of the former mining concession. In fact, they have been found along the left bank of the Rendarena stream, near the eastern border of the mining concession, in small lenses of serpentinite embedded in sandstones, evidenced by stream erosion (Di Lisi, 2011).

Mineral List


81 valid minerals. 7 (TL) - type locality of valid minerals. 1 (FRL) - first recorded locality of unapproved mineral/variety/etc.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Cretaceous
66 - 145 Ma



ID: 1382365
Cretaceous sedimentary rocks

Age: Cretaceous (66 - 145 Ma)

Lithology: Sedimentary rocks

Reference: Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d. [18]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Monetti, L. (1922) Miniera di Manganese "Cerchiara". Memorie Soc. Lunigianese "G. Capellini", La Spezia, Vol II, fasc. III, 98-100.

Huebner, J.S. (1980) Reviews in mineralogy, vol. 7: Pyroxenes - Mineralogical Society of America - P.H. Riber Ed., N.Y., p. 274.

Palenzona, A., Di Giovanni, F., and Borgo, E. (1988) La miniera di Manganese di Cerchiara (SP). Rivista Mineral. Ital., Milano, 4, 209-218.

Lucchetti, G., Cortesogno, L., and Palenzona, A. (1988) Low-temperature metamorphic mineral assemblages in Mn-Fe ores from Cerchiara mine (northern Appennine, Italy). N. Jb. Mineral. Mh., 8, 367-383.

Palenzona, A. and Bulgarelli (1989) Orientite e macfallite di Cerchiara (La Spezia). Riv. Miner. It., 1, 111-114.

Palenzona, A. and Di Giovanni, F. (1990) La serandite di Cerchiara (SP). Riv. Miner. Ital., XIII, fasc. 1, 42-43.

Palenzona, A. (1990) La sugilite di Cerchiara (SP). Riv. Mineral. Ital., 3, 153-154.

Cabella, R., Lucchetti, G., and Palenzona, A. (1990) Al-rich, Fe-poor manganoan sugilite in a pectolite-bearing assemblage from Cerchiara Mine (Northern Appennines, Italy). N. Jb. Mineral. Mh., 1990, 443-448.

Castellaro F. (2008) 160 volte Cerchiara. Prie, 4, 114-130.

Di Lisi, S. (2011) Aragonite ed ematite a Cerchiara. Prie, 7, 8-10.

Testabruna R. (2014) Armotomo a Cerchiara. Segnalazioni in breve. Prie, 10, 46.

Lepore G.O., Bindi L., Zanetti A., Ciriotti M.E., Medenbach O., and Bonazzi P. (2015) Balestraite, KLi2VSi4O10O2, the first member of the mica group with octahedral V5+. American Mineralogist, 100, 608–614.

Lepore, G.O., Bindi, L., Mugnaioli, E., Viti, C., Zanetti, A., Ciriotti, M.E., and Bonazzi, P. (2017) A multimethodic approach for the characterization of manganiceladonite, a new member of the celadonite family from Cerchiara mine, Eastern Liguria, Italy. Mineralogical Magazine: 81: 167-173.

Canadian Mineralogist: 31: 331-336.

Mineralogical Magazine: 60: 369-374.

Am. Min.: 86: 197.

Mineralogical Record: 27: 465.

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