CANADIAN AND WORLD MINERAL DEPOSIT DATABASES
Geological Survey of Canada


Deposit number Country Location Names Commodities
804 Italy (Tuscany) 42.42.50 N -- 010.23.45 E Capo Calamita; Calamita Fe
 
Database name: World Fe-oxide+/-Cu-Au-U (IOCG) deposits
Compilers: Sunil S. Gandhi
Release date: 2015-03-04
   
Deposit name(s): Capo Calamita; Calamita
Political location(s): Italy; Province or state: Tuscany; Subprovince or locality: Elba Island; Nearest community: Rome (194 km 299°)
Deposit clan (type): Iron Skarn-type
Deposit (sub) types: magnetite-ilvaite skarn in carbonate rocks occur as lenses up to 60 x 100 m, and also as irregular masses and veins; Reference: Zitzmann, A. (Editor(s)), 1978: The Iron Ore Deposits of Europe and Adjacent Areas: Explanatory Notes to the International Map of the Iron Ore Deposits of Europe, 1:2,500,000 (Lists and Tables); International Geological Congress, Commission for the Geological Map of the World, Subcommission for the Metallogenic Map of the World, Bundesanstalt fur Geowissenschaften und Rohstoffe, Postfach 51 01 53, D-3000 Hannover 51, Volume II, 386 p.
Deposit status: past producer; Size category: unknown; Status comments: one of the larger old Elba mines exploited since 2500 years ago; hematitic ore with magnetite pseudomorph after hematite; total ore production in Elba estimated at 50 Mt and resources of some 26 Mt
Geologic province: Alpine Orogen
Geologic subprovince: Apennines
Geologic district: Northern Apennines
Deposit object located: open pit - centre
Commodities: Fe
Geological ages: Late Miocene (mineralization)
Late Miocene (related magmatics)
Tectonic setting: continental unstated-unqualified; extensional; Formal name: Late Miocene extension and related plutonism (related igneous rocks)
Coincident features: brecciation along a stratigraphic horizon (clasts of iron ore in breccia and lack of mineralization channels leading to them indicate pre-brecciation origin of mineralization); Coincident feature name: Complex III of Elba Island
host lithology (carbonates of Rhaetean and Liassic formations of Complex II of Elba Island); Coincident feature name: Calcare Cavernoso Formation
Regional tectonic structure: shallow-dipping extensional slides of Late Miocene age with eastward transport (Capo Calamita, Terra Nera, Rio Marina and Rio Albano deposits transported with detachments) Tectonic structure name: Extensional Allochthons
Related igneous rocks: (1) intrusive; granodiorite-tonalite-diorite suite (deposit genetically related to the intrusion); Initials: Monte Capanne granodioritic pluton; Magma series: calc-alkaline; Depositional setting: continental
Individual lithologies:granodiorite (Late Miocene pluton in the western part of Elba Island, related to the poorly exposed Porto Azzurro quartz monzonite to the east)
Metallogenic signatures: Fe-Cu
Alteration signatures: oxidation and supergene enrichment: limonite, ilvaite; What was altered: iron oxide ore
Mineralogy: (alteration): ilvaite, ferrosalite, ferroactinolite, grossularite, epidote
(mineralization): cassiterite, pyrite I, hematite I, magnetite I, mushketovite, magnetite I, magnetite II, hematite II, chalcopyrite, galena, pyrrhotite, magnetite III, pyrite II
Qualified comments: (Applies to: mineralization) One of the larger old Elba mines exploited since 2500 years ago; hematitic ore with magnetite pseudomorph after hematite; total ore production in Elba estimated at 50 Mt and resources of some 26 Mt. Ore reportedly contained 54 % Fe and 1.19 % S; presence of pyrite, chalcopyrite and pyrrhotite in the ore is noteworthy; deposit is regarded as partially metamorphosed and remobilized or reconstituted.

(Applies to: mineralization) Magnetite-ilvaite skarn in carbonate rocks occur as lenses up to 60 x 100 m, and also as irregular masses and veins.
References:
Duenkel, I.; Kuhlemann, J.; Nohlen, U., 2003
Iron Ore Formation and Neotectonic Evolution in Elba (Tuscany, Italy) during Messinian Plutonism
Neues Jahrbuch fur Geologie und Palaontologie. Abhandlungen, Volume 230, p. 391 - 407

Zitzmann, A., 1977
The Iron Deposits of Italy
in The Iron Ore Deposits of Europe and Adjacent Areas: Explanatory Notes to the International Map of the Iron Ore Deposits of Europe, 1:2,500,000 (Text and Figures), Edited by Walther, H. W.; Zitzmann, A., International Geological Congress, Commission for the Geological Map of the World, Subcommission for the Metallogenic Map of the World, Bundesanstalt fur Geowissenschaften und Rohstoffe, Postfach 51 01 53, D-3000 Hannover 51, Volume I, 418 p, p. 209 - 218

Zitzmann, A. Editor(s)), 1978
The Iron Ore Deposits of Europe and Adjacent Areas: Explanatory Notes to the International Map of the Iron Ore Deposits of Europe, 1:2,500,000 (Lists and Tables)
International Geological Congress, Commission for the Geological Map of the World, Subcommission for the Metallogenic Map of the World, Bundesanstalt fur Geowissenschaften und Rohstoffe, Postfach 51 01 53, D-3000 Hannover 51, Volume II, 386 p.


Generated 2015-03-04 14:16:17 with GQuery -- 3.7 ADO (3.19..3.22 -- 2008-12-16)
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