Database name: |
World Fe-oxide+/-Cu-Au-U (IOCG) deposits |
Compilers: |
Sunil S. Gandhi |
Release date: |
2015-03-04 |
|
|
Deposit name(s): |
Murdere |
Political location(s): |
Turkey; Province or state: Southeastern Turkey |
Deposit clan (type): |
Kiruna-type |
Deposit (sub) types: |
Fe oxide subtype; Two stratabound massive magnetite lensesin metatuffs and metavolcanic rocks, tightly foldedabound northwest axis lunging norh; disseminated magnetite around massive lenses |
Deposit status: |
undeveloped; Size category: 40 Mt ; Status comments: Murdere deposit and adjacent Miskel deposit to the west contain the principal iron resources of economic interest in the Avnik district, which are estimated at 104 Mt. |
Geologic province: |
Eastern Taurus Fold Belt |
Geologic subprovince: |
Taurus Mountains |
Geologic district: |
Bitlis Massif |
Commodities: |
Fe |
Mineralization styles: |
massive magnetite lenses; disseminated magnetite around lenses; assimilated layers in Avnik granitoid |
Geological ages: |
Early Paleozoic (host rocks) Early Paleozoic (alteration) Early Paleozoic (mineralization) |
Tectonic setting: |
continental marginal orogenic belt-fold and thrust; convergent; Formal name: Taurus Mountain Fold Belt (host rocks) |
Coincident features: |
lensoid stratiform deposit (folded tightly with the host volcanic sequence); Coincident feature name: host volcanic strata |
Host rocks: |
(1) metamorphic; metavolcanic schist; Magma series/sedimentary package/metamorphic group: calc-alkaline; Depositional setting: subaerial; Metamorphic grade: greenschist-amphiboliteExternal host rock forms: | ash flow tuffs flows | Host rock protoliths: | unclassified volcanic rocks | Host rock stratigraphy: | Lower Unit of Bitlis Massif |
(2) intrusive; unclassified granitoid rocks (heterogeneous and strongly albitized); Magma series/sedimentary package/metamorphic group: calc-alkaline; Depositional setting: continental; Metamorphic grade: amphiboliteHost rock stratigraphy: | Avnik granitoid |
|
Related igneous rocks: |
(1) intrusive; granite suite (Homogeneous granite intrusive into heterogeneous Avnik granitoid); Initials: Yayla graniteIndividual lithologies: | granite |
|
Country rocks: |
(1) intermediate volcanics; (predominant); Country rock name: unnamed; Metamorphic grade: greenschist-amphibolite (2) felsic volcanics; (subordinate); Country rock name: unnamed; Metamorphic grade: greenschist-amphibolite (3) tuffs; (subordinate); Country rock name: unnamed; Metamorphic grade: greenschist-amphibolite (4) agglomerate; (subordinate); Country rock name: unnamed; Metamorphic grade: greenschist-amphibolite |
Metallogenic signatures: |
Fe apatite |
Alteration signatures: |
chloritization: chlorite; What was altered: mafic silicates albitization: albite; What was altered: Potash feldspar |
Mineralogy: |
(alteration): chlorite, talc, epidote, allanite, calcite, hematite, ilmenite, rutile, matite, goethite, hydroxyapatite (hydroxyflorapatite) (gangue): actinolite, feldspar, quartz, mica, diopside, hornblende, crossite, shene (titamite) (mineralization): magnetite, apatite (fluorapatite) |
Radiometric ages: |
Object dated: Host Rocks(1); Age - Ma: 454; +13; -13; Dating method: Rb-Sr; Concentrate: whole rock; Source rock: Intermediate to felsic volcanics; Formal name: Lower Unit of Avnik District; Event dated: host rock; Interpretive comment: Age consistent with the unconformity between the volcanic sequence and Upper Paleozoic strata; Reference: Helvaci, C.; Griffin, W. L., 1983: Rb-Sr Geochronology of the Bitlis Massif, Avnik (Bingöl) Area, S. E. Turkey; in Ophiolites and Oceanic Lithosphere, Edited by Gass, I. G.; Lippard, S. J.; Skelton, A. W., Special Publication, Geological Society of London, U. K., Blackwell Scientific Publications, 13, 413 p, p. 225 - 265
Object dated: Related igneous rocks(1); Age - Ma: 347; +52; -52; Dating method: Rb-Sr; Concentrate: whole rock; Source rock: granite; Formal name: Yayla granite; Event dated: mineralization; Interpretive comment: Age confirms homogeneous Yayla granite as younger than the heterogeneous Avnik granitoid; Reference: Helvaci, C.; Griffin, W. L., 1983: Rb-Sr Geochronology of the Bitlis Massif, Avnik (Bingöl) Area, S. E. Turkey; in Ophiolites and Oceanic Lithosphere, Edited by Gass, I. G.; Lippard, S. J.; Skelton, A. W., Special Publication, Geological Society of London, U. K., Blackwell Scientific Publications, 13, 413 p, p. 225 - 265 |
References: |
Altinli, I. E., 1966 |
Geology of Eastern and Southeastern Anatolia, Part II |
Turkey Mineral Research and Exploration Institute Bulletin, Volume 67, p. 1 - 22 |
Aykulu, A.; Evans, A. M., 1974 |
Structures in the Iranides of Southeastern Turkey |
Geologische Rundshau, Volume 63, p. 292 - 305 |
Hall, R., 1976 |
Ophiolite Emplacement and the Evolution of the Taurus Suture Zone, Southeastern Turkey |
Geological Society of America Bulletin, Volume 87, p. 1078 - 1088 |
Hall, R.; Mason, R., 1972 |
A Tectonic Mélange from the Eastrn Taurus Mountains, Turkey |
Geological Society of London Journal, Volume 128, p. 395 - 398 |
Helvaci, C.; Griffin, W. l., 1983 |
Metamorphic Feldspathization of Metavolcanics and Granitoids, Avnik Area, Turkey |
Contributions to Mineralogy and Petrology, Volume 83, p. 309 - 319 |
Helvaci, C.; Griffin, W. L., 1983 |
Rb-Sr Geochronology of the Bitlis Massif, Avnik (Bingöl) Area, S. E. Turkey |
in Ophiolites and Oceanic Lithosphere, Edited by Gass, I. G.; Lippard, S. J.; Skelton, A. W., Special Publication, Geological Society of London, U. K., Blackwell Scientific Publications, 13, 413 p, p. 225 - 265 |
Helvaci, C., 1984 |
Apatite-Rich Iron Deposits of the Avnik (Bingöl) Region, Southeastern Turkey |
Economic Geology, Volume 79, p. 354 - 371 |
Yilmaz, O., 1971 |
Etude Pétrographique et Géochronologique de la Région de Cacas |
Ph. D. thesis (unpublished), Université Scientifique et Médical de Grenoble, France, 230 p. |
|