Database name: |
World Fe-oxide+/-Cu-Au-U (IOCG) deposits |
Compilers: |
Sunil S. Gandhi |
Release date: |
2015-03-04 |
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Deposit name(s): |
Rio Albano |
Political location(s): |
Italy; Province or state: Tuscany; Subprovince or locality: Elba Island; Nearest community: Rome (202 km 302°) |
Deposit clan (type): |
Iron Skarn-type |
Deposit (sub) types: |
big lenses and masses of hematite ore and limonite, containing 44 % Fe, some Mn and 0.05 % S, occur in calcareous rocks; magnetite veins up to 7 cm thick in associated quartzites and schists ; Reference: 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 |
Deposit status: |
past producer; Size category: unknown; Status comments: one of the old Elba mines exploited since 2500 years ago; Rio Albano hematite-limonite ore mined by open pit; 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: |
centre-deposit on surface |
Commodities: |
Fe |
Mineralization styles: |
irregular bodies; massive; veins |
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: |
stratification in host sequence (carbonate strata of the host formation, thickened due to isoclinal folding, provide lithological control for mineralization); Coincident feature name: Complex III of Elba Island |
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 |
Host rocks: |
(1) sedimentary; carbonate (Rhaetean carbonate overlying Permian Verrunaco clastics and Carboniferous shale); Depositional setting: carbonate platform; Metamorphic grade: greenschistExternal host rock forms: | cavernous limestone | Host rock protoliths: | limestone (extensional allochthon transported with ore deposit 12 km to the east during Late Miocene); Host rock protolith name: Calcare Cavernoso Formation | Internal host rock structures: | fine grained | Individual lithologies: | limestone (cellular limestone lying unconformably on clastic Permian beds ) | Host rock stratigraphy: | Complex III of Elba Island |
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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: continentalIndividual lithologies: | granodiorite (Late Miocene pluton in the western part of Elba Island, related to the poorly exposed Porto Azzurro quartz monzonite to the east) |
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Metallogenic signatures: |
Fe |
Alteration signatures: |
oxidation and supergene enrichment: limonite; What was altered: iron oxide ore |
Mineralogy: |
(alteration): limonite (mineralization): magnetite, hematite, pyrite |
Deposit shape: |
zone of lensoid and irregular bodies |
Qualified comments: |
(Applies to: mineralization) One of the old Elba mines exploited since 2500 years ago; Rio Albano hematite-limonite ore mined by open pit; total ore production in Elba estimated at 50 Mt and resources of some 26 Mt. |
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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