geology quartz veining along shear zones

geology quartz veining along shear zones

Quartz Veining in Archean Shear Zones, Abitibi (Quebec ...

2019-11-13 · Quartz veining in Archean shear zones illustrate therefore several modes of fluid circulation, time and space dependant: (1) transient, pulsative, fault valve – style circulation, that have been correlated with aftershocks development on seismic fault zones; such fluid could travel on long

geology quartz veining along shear zones

QUARTZ VEINING ALONG SHEAR ZONES - Geology & To participate in the 911Metallurgist Forums, be sure to JOIN & LOGIN Use Add New Topic to ask a New Question/Discussion about Geology and Geometallurgy. OR Select a Topic that Interests you. Use Add Reply = to Reply/Participate in a Topic/Discussion (most frequent).

Characteristics and genesis of shear zone-related gold ...

2008-11-1 · Gold mineralization relates to a system of quartz veins along a NNW- to NW-trending shear zone, cutting through successions of garnet–biotite schist with subordinate intercalations of metasiltstone and metagreywacke ().Field and microscopic observations suggest the presence of several types of quartz veins and veinlets in the mine area; only two of these are gold-bearing — the quartz ...

Shear-zone hosted copper mineralisation of the

2016-6-1 · Mylonitic high-strain zones wrap around amphibolites and form an overall anastomosing pattern of thin, cm-wide shear zones within the regionally flatlying S2 gneissosity (Fig. 16b). Importantly, quartz veining is spatially closely associated with these mylonites and localised along the margins of amphibolite blocks.

Quartz deposition and its influence on the deformation ...

2014-4-16 · As the original mudstone is dominated by clays, successive quartz infilling, particularly in cracks along the shear fabrics, is thought to be an important process that can lead to unstable slip. It is also noted that the timing and P-T condition of quartz veining in the Mugi mélange may be comparable to the source region of VLFE in the Nankai ...

Valentine Gold Project | Geology | Marathon Gold

Geology. The Valentine Lake Property hosts structurally controlled, orogenic-type gold bearing Quartz Tourmaline Pyrite (QTP) veins which occur along or proximal to the Valentine Lake Shear Zone which juxtaposed Precambrian rock of the Valentine Lake

Geometry and petrography of stockwork vein swarms,

2018-6-9 · shear zone contains variably mineralised schist and sparse quartz veins (Craw et al. 1999), and is therefore distinctly different from other Otago mineralised vein systems. Some well-defined but discontinuous quartz veins dip shallowly to the northeast subparallel to the shear zone, and these were exploited historically (Williamson 1939 ...

Geology | Castle Peak Mining Ltd.

D1 synorogenic granitoids were intruded between 2187 Ma and 2158 Ma under greenschist metamorphic condition. Syn-D1 gold mineralisation associated with quartz veining could be the original source of Tarkwaian paleo-placers and/or remobilised

The geology of the giant Nyankanga gold deposit, Geita ...

2015-9-1 · The geology of the giant Nyankanga gold deposit, Geita Greenstone Belt, Tanzania ... is a good relationship between zones of high ore grade and zones of brecciated ironstone characterised by extensive quartz veining and a high degree of sulfidisation. ... Such an idea is favoured by the preferential location of the shear zone along diorite ...

Geology & Mineralization |Maritime Resources Corp.

Geology & Mineralization. The Property is host to four gold deposits including the Orion, Muddy Shag, Hammerdown and Rumbullion. The Muddy Shag, Hammerdown and Rumbullion are essentially one mineralized system contained in separate faulted

Canterra Minerals Provides Drilling Update and Defines ...

2021-10-25 · Canterra Minerals Corp. is pleased to provide an update to its fall drill program and to announce that it has defined several new gold targets on the never-before-explored western part of its ...

Geology & Mineralization |Maritime Resources Corp.

Geology & Mineralization. The Property is host to four gold deposits including the Orion, Muddy Shag, Hammerdown and Rumbullion. The Muddy Shag, Hammerdown and Rumbullion are essentially one mineralized system contained in separate faulted

Geology and Mineral Resources - Benz Mining Corp

Geological Model. Genetic models for the Eastmain Gold Deposit have ranged from a synvolcanic and stratabound deposit hosted in a recrystallized chert horizon (Boldy et. al. 1984) to an epigenetic, orogenic deposit that is structurally controlled in a silicified

Quartz deposition and its influence on the deformation ...

2014-4-16 · As the original mudstone is dominated by clays, successive quartz infilling, particularly in cracks along the shear fabrics, is thought to be an important process that can lead to unstable slip. It is also noted that the timing and P-T condition of quartz veining in the Mugi mélange may be comparable to the source region of VLFE in the Nankai ...

Structural setting, style and timing of vein-hosted gold ...

2003-9-13 · Gold-bearing veins within the Liese zone of the Pogo deposit display a two-stage evolutionary history that records temporal variation in kinematics, fluid chemistry and temperature. Several stacked shallow northwest-dipping shear veins are developed at Pogo, and collectively comprise the Liese Zone. Veins consist of: (1) early, narrow biotite-bearing shear veins; (2) white quartz veins

(PDF) Reverse shear, horizontal shortening and lode-gold ...

Preliminary quartz δ 18 O data from Silverstone indicate that whilst all generations of quartz fall in the range +10.5 and +16.0 ‰, δ 18 O values of mineralised quartz in the ore zone are very ...

Blackwolf Copper and Gold Ltd. | Project Geology

Polymetallic, mineralized quartz veining is exposed in two locations within greywacke and argillite of the Lower Hazelton Group, with footwall massive sulphide, dominated by galena with lesser pyrite, chalcopyrite, sphalerite, and tetrahedrite. Two grab samples returned 12.5 g/t Au and 604.1 g/t Ag as well as 14.6 g/t Au and 867.8 g/t Ag.

Malcolm Gold Project - Mt Malcolm NL

Further south at Dumbartons the geology comprises up to three zones of shearing and quartz veining hosted in sheared basalts. Historical drilling has intersected anomalous values of 1-7g/tAu over a strike length of approximately 400m, the untested structure continues beyond the current shallow drill pattern for at least 700m and is up to ...

Firefox Gold - FireFox Gold Drills 93.88 g/t Gold over 1 ...

2021-11-23 · These zones host high-grade (>4 g/t) gold in narrow quartz veins along more than 1.5 kilometres of the hydrothermally altered shear zone from the southwest to northeast. The Northeast Target returned the best intercepts in both the 2019 and 2020 drill programs. Holes 21MJ001 to 21MJ003, reported here, are in the Northeast Target area.

RPT ON KABENUNG L CL GRP

2017-1-17 · On the western border of the property, (line 2N), two shear zones 100 meters apart and up to ten metres in width, transgress the boundary onto Silver Sceptre's property. Discontinuous quartz veining was found along the shear zone, but gold values were not sufficient to warrant immediate follow-up.

The effects of layer anisotropy on auriferous shear zones ...

Economic Geology 1989;; 84 (4): 871–878 ... Abstract. The Norbeau gold deposit comprises quartz veins within four differently oriented sets of shear zones which cut the Bourbeau sill, a metamorphosed layered mafic intrusion. Despite their differing orientations all shear zones display evidence of oblique-reverse shear which three-dimensional ...

Emu hits more high-grade gold veins at Gnows Nest in WA ...

2021-9-28 · Emu has now completed drilling at Gnows Nest Deeps with all 10 holes intersecting shear-hosted, gold-bearing quartz veins. Importantly, the company has defined a new gold anomalous zone between the high-grade northern and southern shoots at Gnows Nest suggesting a continuation of mineralisation in a saddle zone.

Geometry and petrography of stockwork vein swarms,

2018-6-9 · shear zone contains variably mineralised schist and sparse quartz veins (Craw et al. 1999), and is therefore distinctly different from other Otago mineralised vein systems. Some well-defined but discontinuous quartz veins dip shallowly to the northeast subparallel to the shear zone, and these were exploited historically (Williamson 1939 ...

Geological Mapping of Timiskaming-age Intrusions

2020-2-19 · along the Larder–Cadillac deformation zone (see. Figure 39.2), such as the Murdock Creek pluton, south of Kirkland Lake (Rowins et al. 1993). Importantly, the intrusive rocks along the LNSZ are spatially associated with gold mineralization, which manifests as quartz ± carbonate veins and zones of

The role of pre-existing veining in the localization of ...

2020-3-25 · Deposit scale geological map, Detour Lake ... west striking quartz-carbonate veins developed along sub-parallel biotite shear zones in hanging wall of the Sunday Lake Deformation Zone. 17 Quartz-carbonate and sulphide veins, Detour Lake ... •Three phases of auriferous quartz-carbonate veining associated with free-milling gold.

Structural setting, style and timing of vein-hosted gold ...

2003-9-13 · Gold-bearing veins within the Liese zone of the Pogo deposit display a two-stage evolutionary history that records temporal variation in kinematics, fluid chemistry and temperature. Several stacked shallow northwest-dipping shear veins are developed at Pogo, and collectively comprise the Liese Zone. Veins consist of: (1) early, narrow biotite-bearing shear veins; (2) white quartz veins

Malcolm Gold Project - Mt Malcolm NL

Further south at Dumbartons the geology comprises up to three zones of shearing and quartz veining hosted in sheared basalts. Historical drilling has intersected anomalous values of 1-7g/tAu over a strike length of approximately 400m, the untested structure continues beyond the current shallow drill pattern for at least 700m and is up to ...

H. FERDERBER GEOPHYSICS LTD, J Geology R.A.

2017-1-17 · Zone B is comprised of two short conductors trending west across the north-central part of the claim group. This zone is situated near pits, quartz veining and sulphide mineralization and may represent a mineralized shear in mafic intrusive rocks. Conductive zone C

Geological setting and mineralisation - Gold Fields

Local geology. The Agnew-Wiluna section of the Norseman-Wiluna Greenstone Belt is bounded by large granitoid bodies and the Ida fault to the west. The Ida fault, locally termed the Waroonga shear, is a major regional scale shear zone that defines the

Firefox Gold - FireFox Gold Drills 93.88 g/t Gold over 1 ...

2021-11-23 · These zones host high-grade (>4 g/t) gold in narrow quartz veins along more than 1.5 kilometres of the hydrothermally altered shear zone from the southwest to northeast. The Northeast Target returned the best intercepts in both the 2019 and 2020 drill programs. Holes 21MJ001 to 21MJ003, reported here, are in the Northeast Target area.