Introduction. Sediment-hosted stratiform copper deposits are tabular, bedding-parallel bodies of zonally-distributed, disseminated and veinlet-controlled copper and copper-iron sulfides occurring near and at oxidation-reduction boundaries of the host sedimentary rock sequence (Kirkham, 1989, Brown, 1992, Hitzman et al., 2005, Hitzman …
In mineral deposit: Stratiform deposits. A final class of hydrothermal deposit is called stratiform because the ore minerals are always confined within specific strata and are …
Sediment-hosted stratiform ore deposits that underwent metamorphism and orogenesis are interpreted either to have a multiphase origin that might in part predate these events or to be exclusively ...
The stratiform-type ore bodies constitute a marginal to low Mn grade and are also characterized by lower Mn content (26.19–39.24%) along with the Mn/Fe ratio of 7.16–12.23, while the ...
In the Kafang ore deposit, the stratabound copper–tin ores in tabular form and stratiform occur in the contact metasomatic zone between the granitic intrusion and the Triassic basalt . The ore minerals include chalcopyrite, cassiterite, molybdenite, arsenopyrite, pyrite, and pyrrhotite, and the gangue minerals cover actinolite, tremolite ...
Hannak WW (1981) Genesis of the Rammelsberg ore deposit near Goslar/Upper Harz, FRG. In: Wolf KH (ed) Handbook of strata-bound and stratiform ore deposits, vol 9. Elsevier, Amsterdam, pp 551–642. Google Scholar Hu M (1988) A preliminary study of the organic geochemistry of the stratabound deposits.
Stratiform and stratabound Zn-Pb-Ag sulfide deposits hosted in siliciclastic sedimentary rocks constitute some of the world's largest accumulations of base metals. ... The search for metamorphosed ore deposits uses a variety of geological, geochemical, and geophysical exploration techniques, including field evaluations that involve the ...
The term can refer to a stratiform deposit, to variously oriented orebodies contained within the unit, or to a deposit containing veinlets and alteration zones that may or may not be strictly conformable with bedding. Ref: AGI. References. Click here to see list of references, authorities, sources and geographical terms as used in this glossary
deposits have a broad range of relationships with their host rocks that includes stratabound, and discordant ores; in some deposits, stratiform and vein ore are important. The most important characteristics of MVT ore deposits are that they are hosted mainly by dolostone and limestone in platform carbonate sequences and usually located …
Pb-Zn-Ag stratiform deposits occur in ancient continental rift sediments (Sawkins, 1990 ). These deposits, which are not associated with igneous rocks, occur in marine carbonates and are probably deposited from brines, which migrate to the edge of rift basins. REE, Nb, U, Th, Ba, P, Sr, and halogens are concentrated in carbonatites and other ...
This report contains a descriptive model of sediment-hosted stratabound copper (SSC) deposits that supersedes the model of Cox and others (2003). This model is for use in assessments of mineral resource potential. SSC deposits are the second most important sources of copper in the world behind porphyry copper deposits. Around 20 percent of …
Associated deposit types (Cox and Singer, 1986) include bedded barite deposits (Model 31b), stratabound lead-zinc in clastic rocks (Model 30a), Mississippi Valley type lead-zinc (Models 32a,b), sedimentary manganese (Model 34b), ... of stratiform ore suggests that these deposits formed, in highly restricted basins, by syngenetic to early diagenetic
stratiform ore deposits part iv edited by k.h. wolf volume 14 regional studies and specific deposits indexes volumes 11-14 elsevier science publishers b.v.
Handbook of Strata-bound and Stratiform Ore Deposits, Volume 5 Handbook of Strata-bound and Stratiform Ore Deposits, Karl H. Wolf Principles and general studies: Editor: Karl H. Wolf: Publisher: Elsevier Scientific Publishing Company, 1976: Original from: the University of Michigan: Digitized: Feb 20, 2010: ISBN: 0444414053, 9780444414052 ...
Handbook of Strata-Bound and Stratiform Ore Deposits, Volume 7: Au, U, Fe, Mn, Hg, Sb, W, and P Deposits focuses on the characteristics, properties, origins, and structures …
Evaluation of Critical Elements in "Bathtub Rim Deposits" of the Midcontinent: We have identified previously unrecognized (or forgotten) ore-grade concentrations of REE and Mn, Co and equally critical elements, including U, Ni, PO 4, Sc, Sr, and F, in specific stratigraphic intervals that host "bathtub rim" deposits in the midcontinent. We will ...
Two main hypogene Cu–Co sulfide mineralization stages and associated gangue minerals (dolomite and quartz) are distinguished. The first is an early diagenetic, typical stratiform mineralization with fine-grained minerals, whereas the second is a multistage syn-orogenic stratiform to stratabound mineralization with coarse-grained minerals.
The age and genesis of many deposits cannot be attributed to only one cycle of formation but at least two stages must be considered. The total time of formation for kies ore deposits lies between 50 and 250 my. The examples of Karatau and Sardinia prove a theory according th which the formation of Pb/Zn deposits in carbonate rocks cannot only ...
The ore minerals in stratabound deposits are exclusively confined within a single-specific stratigraphic unit. The stratabound deposits will include various orientation of mineralization representing layers, rhythmic, stratiform, veinlets, stringers, disseminated, and …
This report contains a descriptive model of sediment-hosted stratabound copper (SSC) deposits that supersedes the model of Cox and others (2003). This model is for use in assessments of mineral resource potential. SSC deposits are the second most important sources of copper in the world behind porphyry copper deposits. Around 20 …
The stratiform deposit of mercury at Horni Luby near Cheb (Czech Republic) is hosted by Ordovician phyllites of Vogtland–Saxony Paleozoic Unit in the Saxothuringian Zone of the Bohemian Massif. ... The stratabound tungsten mineralization in Chitral, ... A number of ore deposits of the Sb-W-Hg-Formation were investigated in the Kreuzeck range ...
Reduced facies (Kupferschiefer) type deposits are hosted in shales or siltstones containing reduced carbon or sulfur minerals. They host sheet-like ore bodies of very large tonnage (sometimes 1 billion tonnes or more) and moderate grade (~1.4% Cu). In sandstone-type (Revett) deposits Cu minerals are hosted in sandstones containing …
Two groups of Cenozoic stratabound and stratiform ore deposits of different paleo-geographic positions, stratigraphic setups, and paleo-environments are …
The average grade of an ore deposit is calculated, often employing very sophisticated statistical procedures, as an average of the grades of a very large number of samples collected from throughout the deposit. ...
In the Central African Copperbelt some 20 stratiform deposits comprise resources of over five billion tonnes of ore with grades of 2.5–4.5% Cu and 0.2% Co. Lead–zinc ore deposits are found in sedimentary basins in which comparatively low temperature (50–200°C), chloriderich, hydrothermal solutions (brines) leach and transport the metals ...
The term sediment-hosted stratiform copper (SSC) deposits is considered to be the best compromise as it emphasizes, in addition to the sedimentary host rocks, two other characteristics — the stratiform nature of mineralization and the dominance of copper — that separate this class of deposits from other classes of sediment-hosted deposits.
Chapter 3 – CLASSIFICATIONS OF STRATA-BOUND ORE DEPOSITS | Semantic Scholar. DOI: 10.1016/B978-0-444-41401-4.50007-1. Corpus ID: 132810634.
The Neoproterozoic central African Copperbelt is one of the greatest sediment-hosted stratiform Cu–Co provinces in the world, totalling 140 Mt copper and 6. Mt cobalt and including several world-class deposits (⩾10 Mt copper).. The origin of Cu–Co mineralisation in this province remains speculative, with the debate centred around …
Mississippi Valley-type deposits. MVT deposits are always in limestones and are generally located near the edges of sedimentary basins or around the edges of what were islands or high points in the seafloor when the …
Examination of volcanic-exhalative and biogenic origins for sulfur in the stratiform massive sulfide deposits of New Brunswick. ... Stratabound Ore Deposits in the Andes. p. 555. CrossRef; Google Scholar; Sillitoe, R. H. 1991. Gold metallogeny and …