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Stockwork deposit

Propylitic alteration: the alteration was observed at the periphery of geant casino la varenne saint hilaire Ali Javad district at farthest points on the eastern flank, near the village of Anjerd (Figure 12).
(2009) Petrology and Geochemistry of Anzan, Khankandi and Sheivar Dagh granitoids (North and East of Ahar, Eastern Azerbaijan) with References to Associated Mineralization.
Ore occurs as disseminated and stockwork ore (veinlets that appear to follow incipient fissures as well as sporadic ore bodies associated with abundant breccia, phreatomagmatic and phreatic, with strong silicification bordered by argillic zones.Conclusion Emplacement of quartz monzonitic porphyry stock at the Ali Javad area led to Cu-Au porphyry mineralization.Mafic-siliciclastic edit VMS deposits associated with sub-equal proportions of mafic volcanic and siliciclastic rocks; felsic rocks can be a minor component; and mafic (and ultramafic) intrusive rocks are common.Furthermore, 2600 samples were selected from different depths of logs for ICP analysis by ALS-Chemex laboratory in Spain.18 which extends with the dip of 30 to 40 southwestward at depths (Figure 16).The gangue minerals resulting from hydrothermal replacement are adularia, jarosite, kaolin, pyrite, pyrrhotite, quartz, and calcite.The gray rocks visible in the pit are almost all in the primary-sulfide ore zone.Thos.2013.08.003 m/science/article/pii/S Mehrpartou,.VMS deposits have an ideal form of a conical area of highly altered volcanic or volcanogenic sedimentary rock within the feeder zone, definition needed which is called the stringer sulfide or stockwork zone, overlain by a mound of massive exhalites, and flanked by stratiform exhalative.Chemical Geology, 215, 61-93.Most large-scale porphyry deposits have an age of less than 20 million years., 7 however there are notable exceptions, such as the 438 million year old Cadia-Ridgeway deposit in New South Wales.Iranian porphyry deposits were developed in four belts based on the geology and dating results of the deposits as following: 1) Arasbaran belt, 2) Middle part of Urumieh-Dokhtar belt, 3) Kerman belt, 4) Eastern Iran belt.They are predominantly stratiform accumulations of sulfide minerals that precipitate from hydrothermal fluids on or below the seafloor in a wide range of ancient and modern geological settings.
A b c d e f g h i j Sillitoe,.H., Porphyry Copper Systems.
Chalcopyrite playgrand casino no deposit bonus codes was the most abundant hypogene sulfide min- eral after pyrite in Ali Javad deposit (Figure 15(b) which was replaced by covellite and digenite in supergene zone.
However, in some porphyry deposits such as Butte in Montana, where light green sericitic and dark grey sericite-chlorite assemblages were simultaneous or even rather younger than central potassic alteration, propylitic alteration was developed farther.
The current open pit mine occupies the same general area of the historic Rawhide mining district.
(2015) Long-Lived, Stationary Magmatism and Pulsed Porphyry Systems during Tethyan Subduction to Post-Collision Evolution in the Southernmost Lesser Caucasus, Armenia and Nakhitchevan.Sporadic ore bodies are associated with brecciation of the rock.(1984) Trace Element Characteristics of Lavas from Destructive Plateundaries.Altogether, these geological features have been interpreted to show an association of VMS deposits with hydrothermal systems developed above or around submarine volcanic centres.Sericite zone, found in nearly all examples, consisting of sericite /- chlorite /- silica, Silicification zone, often gradational with background silica-albite metasomatism.Zoning is observed both as progressive pattern where emanating fluids flushing off the central body and well represents temporal and spatial relationship from central part to periphery in some of de- posits while in regressive pattern, outer zone minerals were developed on the central zone.Mineralization Zones Leached zone was developed at the uppermost part of the deposit which was characterized by hematite, limonite, goethite, pyrite and sometimes malachite.The software utilized for the purpose was Datamine which provided 3-D subsurface alteration models shown in Figure.Mine Info, elevation: 5,102 Feet (1,555 Meters primary Mineral: Gold, Silver.Sulfide ores developed in decreasing oxygen fugacity, increasing sulfur fugacity and decreasing temper- ature of ore fluids.The Noranda, Flin Flon-Snow Lake and Kidd Creek camps would be classic districts of this group."A Special Issue on Archean Magmatism, Volcanism, and Ore Deposits: Part.

In all cases these alteration zones are metasomatism effects in the strictest sense, resulting in addition of potassium, silica, magnesium, and depletion of sodium.
Two major N-S to NNE-trending high angle structures clearly bound and may offset ore grade mineralization at Murray and Crazy hills.
Hybrid VMS-sedex deposits of the siliciclastic associations (see below) may be developed within interflow sediments or within units of sedimentary rocks which are present discontinuously throughout a larger and essentially contiguous volcanic package.