CANADIAN AND WORLD MINERAL DEPOSIT DATABASES
Geological Survey of Canada


Deposit number Country Location Names Commodities
802 Italy (Tuscany) 42.42.57 N -- 010.25.55 E Ginevro Fe
 
Database name: World Fe-oxide+/-Cu-Au-U (IOCG) deposits
Compilers: Sunil S. Gandhi
Release date: 2015-03-04
   
Deposit name(s): Ginevro
Political location(s): Italy; Province or state: Tuscany; Subprovince or locality: Elba Island; Nearest community: Rome (193 km 300°)
Deposit clan (type): Iron Skarn-type
Deposit (sub) types: Giverno and Sassi Neri deposits are regarded as autochthonous in contrast with the other deposits of Elba island that are regarded as allochthonous because of eastward transport by extensional slides; Reference: 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
Deposit status: past producer; Size category: unknown; Status comments: mining on Elba since Estruscan times about 2500 years ago; Ginevro is an old mine; revived with magnetite mining since 1969; 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: mine site
Commodities: Fe
Mineralization styles: massive magnetite pods in skarn
Geological ages: Late Miocene (mineralization)
Tectonic setting: continental unstated-unqualified; extensional; Formal name: Late Miocene extension and related plutonism (related igneous rocks)
Coincident features: fault zone (north-trending faults related to Late Miocene extension following the Oligocene-Miocene Apennitic collision phase); Coincident feature name: north-trending major faults
intrusive contact (mineralization interpreted as related to the Late Miocene pluton, which is poorly exposed); Coincident feature name: Porto Azzuro quartz monzonite pluton
Regional tectonic structure: north-south trending horst and graben structure of Late Miocene age (mineralization localized in a down-faulted carbonate wedge bounded by the faults N-S faults in Calamita schists) Tectonic structure name: Late Miocene extensional faults
Host rocks: (1) sedimentary; carbonate (Mesozoic carbonate wedge in late Paleozoic Calamita schists); Depositional setting: carbonate platform; Metamorphic grade: greenschist
Host rock stratigraphy:Complex II of Elba Island
Related igneous rocks: (1) intrusive; quartz monzonite-monzogabbro suite (quartz monzonite pluton, poorly exposed but its areal extent detected from subsurface work ); Initials: Porto Azzurro pluton; Magma series: calc-alkaline; Depositional setting: continental
(2) intrusive; granodiorite-tonalite-diorite suite (well exposed pluton in western part of Elba island); Magma series: calc-alkaline; Depositional setting: hypabyssal
Metallogenic signatures: Fe
Alteration signatures: skarn: grossularite-pargasite-serpentinite; What was altered: carbonate host rock
oxidation and supergene enrichment: iron cap, ilvaite; What was altered: magnetite ore
Mineralogy: (gangue): grossularite, pargasite, tremolite, pyrite, calcite
(mineralization): magnetite, ilvaite
Radiometric ages: Object dated: Related igneous rocks(1); Age - Ma: 5.9; +0.5; -0.5; Dating method: K-Ar; Concentrate: whole rock; Source rock: quartz monzonite; Formal name: Porto Azzurro pluton; Event dated: intrusive event; Interpretive comment: age confirmed by Rb-Sr method; age is somewhat younger than that of the Monte Cappane pluton ; Reference: Borsi, S.; Ferrara, G.; Tongiorgi, E., 1967: Determinazionne con il Metodo del K/Ar delle età delle Rocce Magmatiche della Toscana; Bollettino della Società Geologica Italiana, Volume 86, p. 403 - 410

Object dated: Related igneous rocks(1); Age - Ma: 5.1; +0.8; -0.8; Dating method: Rb-Sr; Concentrate: whole rock; Source rock: quartz monzonite; Formal name: Porto Azzurro pluton; Event dated: intrusive event; Interpretive comment: the age is close to the that obtained by K-Ar method; Reference: Saupé, F. ; Marignac, C.; Moine , B.; Sonet, J; Zimmermann, J. L., 1982: Datation par les Méthodes K/Ar et Rb/Sr de quelques Roches de la Partie Orientale de l'Isle d'Elba (Province de Livourne, Italie); Bulletin de Mineralogie, Volume 105, p. 236 - 245

Object dated: Related igneous rocks(1); Age - Ma: 5.4; +1.3; -1.3; Dating method: Rb-Sr; Concentrate: whole rock; Source rock: quartz monzonite; Formal name: Porto Azzurro pluton; Interpretive comment: slightly larger error margin than that for the age reported by Saupé et al. (1982); Reference: Venzlaff, V.; Waldeck, H., 1974: Geochemical Investigation on the Island of Elba, II. Age Dating of Central and Western Elba Granites: a Comparison; Neues Jahrbuch fur Geologie und Palaontologie. Abhandlungen, Volume 120, p. 315 - 323

Object dated: Related igneous rocks(2); Age - Ma: 6.2; +0.2; -0.2; Dating method: U-Pb; Concentrate: zircon; Source rock: granodiorite; Formal name: Monte Capanne pluton; Event dated: intrusive event; Interpretive comment: Monte Cappane and Porto Azzurro plutons span about 1 Ma period of crustal extension and magmatism; Reference: Juteau, M.; Michard, A.; Zimmermann, J. L.; Albarede, F., 1984: Isotopic Heterogeneities in the Granitic Intrusion of Monte Capanne (Elba Island, Italy) and Dating Concepts; Journal of Petrology, Volume 25, p. 532 - 545
Deposit shape: lensoid
Qualified comments: (Applies to: discovery and development) Mining on Elba since Estruscan times about 2500 years ago; Ginevro is an old mine; revived with magnetite mining since 1969; total ore production in Elba estimated at 50 Mt and resources of some 26 Mt. No production or resource data available for the Ginevro deposit; the ore contained 35.14 % Fe, 0.20 % Mn, 0.22 % S, 28.62 % SiO2, 4.8 % CaO, 1.8 % MgO and 3.9 % Al2O3; open pit and underground mining.
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.


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