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Monte Leoni, Grosseto Province, Tuscany, Italy

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Location is approximate, estimate based on other nearby localities.
Latitude & Longitude (WGS84): 42° North , 11° East (est.)
Margin of Error:~63km
Locality type:Mountain
Köppen climate type:Csa : Hot-summer Mediterranean climate
Name(s) in local language(s):Monte Leoni, Provincia di Grosseto, Toscana, italia

Monte Leoni is a group of hills, located in the municipal territories of Grosseto, Campagnatico, and Roccastrada, which forms the southern part of the Monticciano-Roccastrada metamorphic massif. Its highest point (616 m asl) is the top of Monte Leoni, in the municipal territories of Campagnatico.

The most common paragenesis in low-grade Verrucano metasediments is chloritoid, pyrophyllite, and micas (muscovite and paragonite) (Franceschelli et al., 1986). Magnesiocarpholite as green, columnar or fibrous crystals, up to several centimetres in length, is found in syn-folial quartz-calcite veins widespread in Verrucano rocks, which experienced metamorphism during the Apennine orogeny (Giorgetti et al., 1998; Giorgetti et al., 2001). Late stage sudoite and kaolinite have also been observed.

Mineral List

10 valid minerals.

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Franceschelli M., Leoni L., Memmi I., Puxeddu M., (1986): Regional distribution of Al-silicates and metamorphic zonation in low-grade Verrucano metasediments from the Northern Apennines, Italy. J. of Metamorphic Geolog., 4, 309-321.
Giorgetti G., Goffé B., Memmi I., Nieto F. (1998): Metamorphic evolution of Verrucano metasediments in northern Apennines: new petrological constraints. European Journal of Mineralogy, 10, 1295-1308.
Jolivet L., Faccenna C., Goffè B., Mattei M., Rossetti F., Brunet Ch.,Storti F., Funiciello R., Cadet J.P., D’Agostino N., Parra T. (1998): Mid-crustal shear zones in post-orogenic extension: example from the Northern Tyrrhenian sea. J. Geoph. Res., 103, B6, 123-160.
Fuchs Y., Mellini M., Memmi I. (2001): Crystal-chemistry of magnesiocarpholite: controversial X-ray diffraction, Mössbauer, FTIR and Raman results. European Journal of Mineralogy, 13, 533–543.

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