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Ala Valley, Lanzo Valleys, Torino Province, Piedmont, Italy
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Name(s) in local language(s): Val d'Ala, Valli di Lanzo, Torino, Piemonte, Italia
 
Among the three Lanzo Valleys, Ala Valley is the one located in the middle. From an administrative point of view its territory belongs to the municipalities of Balme (the upper valley), Ala di Stura (the middle valley) and Ceres (the lower valley).

Since the 19th century, in virtue of the high summits that form the border with Savoy and thanks to the nearness of Piedmont’s capital, it had been the cradle of the mountaineering and a favourite destination of the summer and winter tourism. Its rodingite dykes, known from the onset of the 19th century, have yielded superb mineral specimens, exhibited till now in the main museums worldwide; furthermore, it is the type locality for diopside (Roch Neir and Testa Ciarva at Pian della Mussa, Balme). Studies on the minerals from this valley have been performed and published by many prominent mineralogists and crystallographers.

From a geological point of view, the most part of the valley is included in the Piemonte zone of calcschists with meta-ophiolites. Rocks of the Sesia-Lanzo zone only appear in the lower valley and on the top of Uja di Ciamarella, while gneisses of the Gran Paradiso Massif crop out in the upper Vasoera Valley (Vallone di Vasoera), SW of Trione Pass (Colle del Trione).

Mineral List

Mineral list contains entries from the region specified including sub-localities
Actinolite
Aeschynite-(Y)
Albite
'Amphibole Asbestos'
Amphibole Supergroup
Anatase
Andradite
var: Demantoid
var: Topazolite
Ankerite
Annabergite
Antigorite
'Apatite'
Aragonite
'Ardennite'
Arsenopyrite
'Asbestos'
Azurite
Birnessite
Bornite
Boulangerite
Bournonite
Braunite
Brochantite
Brookite
Brucite
'Brugnatellite'
Calcite
'Chabazite'
Chalcocite
Chalcopyrite
'Chlorite Group'
Chloritoid
Chromite
Chrysotile
Clinochlore
Clinohumite
var: Titanclinohumite

Clinozoisite
Cobaltite
Diopside
var: Diallage
Dolomite
Epidote
Erythrite
Forsterite
Galena
'Garnet'
Glaucophane
Goethite
Grossular
var: Hessonite
Hematite
Hörnesite
Hydromagnesite
Ilmenite
Jadeite
'K Feldspar
var: Adularia'

Lepidocrocite
Löllingite
Magnesite
Magnetite
Malachite
Molybdenite
Muscovite
var: Alurgite

var: Fuchsite
var: Phengite
var: Sericite
Natrolite
Nickeline
'Olivine'
Omphacite
var: Chrome-Omphacite
Perovskite
Piemontite
Prehnite
Pyrite
Quartz
Rammelsbergite
Rhodochrosite
Rhodonite
Siderite
Skutterudite
var: Smaltite

Spessartine
'Stilbite'
Talc
Tetrahedrite
Thomsonite-Ca
Titanite
'Tourmaline'
Tremolite
Uvarovite
Vesuvianite
Xenotime-(Y)
Zircon
Zoisite


97 entries listed. 72 valid minerals.

Localities in this Region

Italy
Italy

The above list 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

- Barelli, V. (1835): Cenni di statistica mineralogica degli Stati di S.M. il Re di Sardegna, ovvero Catalogo ragionato della raccolta formatasi presso l'Azienda Generale dell'Interno. Tipografia Giuseppe Fodratti, Torino, 686 pp.
- Strüver, G. (1871): Die Minerallagerstatten des Alathales in Piemont. Neues Jahrb. Miner. Geol. Pal., 337-352.
- Jervis, G. (1873): I tesori sotterranei dell'Italia. Vol. 1: Regioni delle Alpi. Ed. Loescher, Torino, xvi+354 pp.
- Repossi, Emilio (1919): La val d'Ala ed i suoi minerali. Natura, 10, 89-132.
- Grill, E., Repossi, Elena (1942): Itinerari mineralogici. La Val d'Ala. Natura, 33, 42-57.
- Repossi, Elena (1942): Ricerche su alcuni minerali della Val d'Ala. Atti Soc. Ital. Sci. Nat., 81, 138-152.
- Dal Piaz, G. V. (1967): Le "granatiti" (rodingiti l.s.) nelle serpentine delle Alpi occidentali italiane. Memorie della Società Geologica Italiana, 6, 267-313.
- De Michele, V. (1974): Guida mineralogica d'Italia. Ed. De Agostini, Novara, 2 vol., 408 pp.
- Gramaccioli, C.M. (1975): Minerali alpini e prealpini. Istituto Italiano Edizioni Atlas, Bergamo, 2 vol., 472 pp.
- Maletto, G., Meda, F., Pelizzone, G. (1976): I minerali della Val d'Ala. 4a edizione. Feder. Naz. Gr. Mineral. Paleont. It., Ed., Tipografia Ellezeta, Torino, 72 pp.
- Gramaccioli, C.M. (1979): Minerals of the Alpine rodingites of Italy. Min. Record, 10, 2, 85-89.
- Brizio, P., Maletto, G., Pelizzone, G. (1984): Aggiornamento a: "I minerali della Val d'Ala". Not. Miner. Paleont. (Riccione), 39, 3-15 (Part I); 40, 44-48 (Part II).
- Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007): Minerali del Piemonte e della Valle d'Aosta. Amici del Museo "F. Eusebio" di Alba, Ed., Alba, 607 pp.
- Ciriotti, M.E., Fascio, L., Pasero, M. (2009): Italian type minerals. Edizioni Plus – Università di Pisa, Pisa, 357 pp.
- Maletto, G., Piccoli G.C. (2014): Minerali in Val d’Ala. Associazione Amici del Museo "F. Eusebio" di Alba, Ed., Alba, 224 pp. + 1 folded map.

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Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. 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 thousands 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.
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