Porphyry mineralisation
WebNov 3, 2011 · A porphyry-stock-related style of mineralisation in the Grampian Terrane is characterised by a stockwork of veinlets and disseminations in dacite prophyries, consisting of quartz, dolomite, sulphides and late calcite, and well-developed wallrock alteration dominated by zones of phyllic, sericitic and propylitic alteration. WebPorphyry-related metal deposits are large-tonnage, generally low-grade, hydrothermal deposits related to igneous intrusions emplaced at high crustal levels that include many of the world's largest accumulations of Cu, Mo, Au, Ag, Sn, and W. This database tabulates basic information about the world's largest porphyhry-related deposits in order to help …
Porphyry mineralisation
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WebApr 11, 2024 · Most of the mineralisation within the hole is considered to represent low grade leakage from the central porphyry-style source. The presence of copper mineralisation over such a large area provides an early indication of the potential scale of the central porphyry system. WebApr 11, 2024 · The Apollo porphyry deposit is a high-grade, bulk tonnage copper-silver-gold system, which owes its excellent metal endowment to an older copper-silver and gold …
WebJan 9, 2024 · Highlights. 2024 drilling has intersected near-surface copper-gold porphyry-style mineralization immediately north of the new Seel Breccia East zone. Hole S22-330 returned 100 metres grading 0.42% ... WebJul 3, 2024 · This synvolcanic porphyry-like mineralisation has been metamorphosed to the conditions of the greenschist facies, deformed, and possibly overprinted by late hydrothermal events [43,44]. Mercier-Langevin [ 43 ] studied the tonalite samples and identified Sample #19449 as being least-altered, as petrological investigations showed …
WebApr 11, 2024 · The Apollo porphyry deposit is a high-grade, bulk tonnage copper-silver-gold system, which owes its excellent metal endowment to an older copper-silver and gold … WebMay 15, 2024 · The Tethyan metallogenic domain (TMD), as one of the three major domains in the world, extends over 10000 km from east to west, and has developed several world …
Web2 days ago · Grab sampling of outcropping mineralization returned grades of 1.8% copper and 54 g/t silver with trace molybdenum and confirms the Tinto Zone as a priority target …
WebApr 11, 2024 · The drone magnetic survey identified a "Bullseye" geophysical anomaly coincident with a 2.5km long copper and gold anomaly in outcrop. Rock chip surface … t-sql top 100%Webgold deposits. The physical properties of the mineralisation and alteration are discussed with an emphasis on those properties that can be measured with standard exploration techniques. Mineralisation in porphyry Cu-Au deposits is commonly associated with magnetite that can produce strong discrete magnetic anomalies. tsql top rowWeb1 day ago · Drilling has commenced to test extensions to Kaliman porphyry gold-copper and Brecha- Comanche epithermal vein hosted gold mineralisation at the Dynasty Project. … phishingmailWebMar 15, 2024 · Porphyry-type deposits originally form several kilometres below the Earth’s surface above large magma chambers. Not only are they rare but most large near-surface examples have already been found. To meet future demand for copper, new methods are needed to discover deeper and possibly smaller deposits – using techniques that meet … phishing-mailWebFeb 23, 2024 · Visual sulphide mineralisation comprised 1 to 3% chalcopyrite as disseminations and in association with pyrite and 2 to 10% A-B veining within early-stage and intra-mineral host porphyry. tsql top distinctWebAmong the most distinctive hydrothermal deposits is a class known as porphyry copper deposits, so called because they are invariably associated with igneous intrusives that are porphyritic (meaning the rock is a mixture of coarse and fine mineral grains).Porphyry copper deposits (and their close relatives, porphyry molybdenum deposits) contain … phishing mail amazon primeWeb1 day ago · Titan Minerals (TTM) has launched a drilling program at its Dynasty gold project in southern Ecuador. The drilling will seek to test extensions to mineralisation identified in Titan’s 2024 drilling campaign, where “significant” epithermal gold and porphyry gold-copper mineralisation remains open both laterally and at depth. phishing mail abn amro melden