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Acqua Bianca valley, Gorfigliano, Minucciano, Apuan Alps, Lucca Province, Tuscany, Italy

Valle dell'Acqua Bianca, Gorfigliano, Minucciano, Alpi Apuane, Lucca, Toscana, Italia

Several quartz veins are embedded in rocks metamorphosed to greenschist facies and belonging to the Apuane Metamorphic Complex.

The quartz veins of Gorfigliano were formed during the late stages of the tectono-metamorphic evolution of Apuan Alps. They are reported in two distinct areas: Grotta del Caprone and La Minierina.
At Grotta del Caprone veins are embedded in the metapelites of Scisti sericitici formation. Quartz is the most common mineral and it is associated, usually, with chlorite and hematite. Three minerals containing Th and REE were found in these veins: allanite-(Ce), synchysite-(Ce) and thorite. Other minerals present in this place are albite, anatase, calcite, chalcopyrite, fluorapatite, malachite, pyrite and rutile.
At La Minierina, quartz veins are hosted in metacherts and calcschists. The only phase present in this occurrence is quartz with minor calcite.

References

• Orlandi, P., Dini, A., Gemignani, E., Pierotti, L., Quilici, U., Romani, U. (2002): Paragenesi alpine nelle Alpi Apuane: I minerali delle vene di quarzo della Valle dell'Acqua Bianca, Gorfigliano (LU) Rivista Mineralogica Italiana, 26 (4), 216-223.
• Biagioni, C. (2009). Minerali della Provincia di Lucca. Associazione Micro-Mineralogica Italiana, Cremona, 352 pp.


Mineral List

Albite
Allanite-(Ce)
Anatase
Azurite
Calcite
Chalcopyrite
Clinochlore
Fluorapatite
Goethite
Hematite
Malachite
Pyrite
Quartz
Rutile
Synchysite-(Ce)
Thorite


16 entries listed. 16 valid minerals.

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Copyright © Jolyon Ralph and Ida Chau 1993-2011. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 7th Jul 2011 20:13:44
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