Peralkaline Granite With Gold

Peralkaline Granite With Gold

The Sams Creek Peralkaline Granite Hosted Gold Deposit

2019-6-13  The gold is associated with arsenopyrite-pyrite-quartz-siderite mineralisation in a peralkaline granite porphyry dyke, which intrudes lower Palaeozoic metasedimentary rocks. The first published record of the dyke noted that it was a recrystallised riebeckite microgranite (Shelley, 1984).

Mineralogical and stable isotope studies of

2006-1-19  At Sams Creek, a gold-bearing, peralkaline granite porphyry dyke, which has a 7 km strike length and is up to 60 m in thickness, intrudes campton Mineralogical and stable isotope studies of gold–arsenic mineralisation in the Sams Creek peralkaline porphyritic granite, South Island, New Zealand

Gold mineralisation in the polymetallic Sams Creek

2003-5-1  Abstract. At Sams Creek, a peralkaline microgranite dyke intrudes Lower Palaeozoic greenschist facies metasediments. The granitedyke has been extensively silicified and hosts stockwork veins composed of quartz, siderite, and arsenopyrite + pyrite ± gold ± galena ± sphalerite ± chalcopyrite ± pyrrhotite. Alteration and gold mineralisation are

Mineralogical and stable isotope studies of gold

2006-3-1  At Sams Creek, a gold-bearing, peralkaline granite porphyry dyke, which has a 7 km strike length and is up to 60 m in thickness, intrudes camptonite lamprophyre dykes and lower greenschist facies metapelites and quartzites of the Late Ordovician Wangapeka formation.

2.3 Granite-related mineral system Geoscience

2021-6-3  Deposits that form part of the granite-related mineral system include granite-related Sn-W-F (including a variety of skarn deposits), pegmatite-hosted Ta-Nb-Li-Be, porphyry Mo and intrusion-related gold deposits. Aspects of the granite-related

30 September 2020 TRANSFORMATIONAL ACQUISITION

2020-9-30  Sams Creek mineralisation is contained within a hydrothermally altered peralkaline granite porphyry dyke that intrudes Early Paleozoic metasediments. The dyke is up to 60 m thick and can be traced east-west along strike for over 7km. The dyke generally dips steeply to the north (-60°) with gold

A-type granites

2011-8-23  The Keivy peralkaline granite complex consists of 2650-2660 Ma peralkaline granites, 2670 Ma syenogranites, and 2680 Ma alkaline syenites. The granites form sheet-like bodies with thicknesses of a few hundred meters, but have vast exposed

Permian peralkaline, peraluminous and metaluminous

2007-9-15  The peralkaline granitic rocks are spatially, temporally and chemically related to the layered intrusions and are likely associated with the formation of the Fe-Ti-V oxide deposits (Chen, 1990, Yang et al., 1997, Shellnutt and Zhou, 2006a). The exact process which connects the two rock types is unknown, however the presence of an oxide deposit and the mafic-felsic association without intermediate

TIN, GOLD AND GRANITOIDS IN BRAZIL endogreisen; 3)

2003-4-20  In the JTP, gold occurs mainly in high-grade small deposits hosted in quartz veins and often related to shear zones, or disseminated in widespread hydrothermal zones. In the Matupá Granite, gold seems to be related to a porphyry system (Botelho and Moura 1998). The mineralization is concentrated in the most intensely hydrothermalized zones.

Nature and origin of A-type granites with particular

The high concentration of Zr and probably other elements such as the REE in peralkaline or near peralkaline A-type melts is a result of the counter ion effect where excess alkali cations stabilize structures in the melt such as alkali-zircono-silicates. The melt structure determines the trace element composition of the granite.

The Sams Creek Peralkaline Granite Hosted Gold Deposit

2019-6-13  The peralkaline granite porphyry, which hosts the gold-sulfide mineralisation, intrudes Ordovician-Silurian metapelite, metasandstone and quartzite of the Wangapeka Formation and Hailes Quartzite (Grindley, 1980; Rattenbury, Cooper and Johnston, 1998). The tabular morphology of the granite porphyry body, with a thickness of

peralkaline granite with gold megustasi.it

peralkaline granite with gold urbancleaningzone.co.za. peralkaline granite with gold. Granite Vs Gabbro Similarities and Differences. Granite is a medium-tocoarse-grained acid igneous rock with essential quartz >20% and feldspar where alkali feldspar constitutes between 100 and 35% of the feldspars and minor mafic minerals Gabbro is a dark

Gold mineralisation in the polymetallic Sams Creek

At Sams Creek, a gold-bearing, peralkaline granite porphyry dyke, which has a 7km strike length and is up to 60m in thickness, intrudes camptonite lamprophyre dykes and lower greenschist facies

Gold mineralisation in a syntectonic granite dike, Sams

2018-6-14  peralkaline granite dike, Takaka, New Zealand"). Lamprophyre dikes Sulphides and gold locally replace granite in these bleached zones, and quartz veinlets with sulphides and gold fill the fractures. These types of alteration are typical of rocks Granite in these areas is

30 September 2020 TRANSFORMATIONAL ACQUISITION

2020-9-30  Sams Creek mineralisation is contained within a hydrothermally altered peralkaline granite porphyry dyke that intrudes Early Paleozoic metasediments. The dyke is up to 60 m thick and can be traced east-west along strike for over 7km. The dyke generally dips steeply to the north (-60°) with gold

Rare Metal Deposits Associated with

The εNd(2050 Ma) values of the peralkaline and peraluminous granite samples overlap (–0.9 to +0.6 and –3.2 to +0.9, respectively) and are somewhat lower than those in the intermediate rocks

The nature and origin of gold mineralization at Sams

Gold mineralization is hosted by a peralkaline granite dyke which outcrops over about eight kilometers in the area of Sams Creek, a tributary of the Takaka River, north-west Nelson. The granite is riebeckite and acmite bearing, with antiperthitic alkali feldspars; it has A-type chemistry, implying an origin by partial melting at a temperature

ZEISS Microscopy Solutions for Geoscience

2021-6-6  gold mineralization particles using non-destructive 3D X-ray microscopy. Peta Pixel Project: Peralkaline granite example showing contextual mineralogy, digitization and correlation. Applications Note: 3D Drill Core Scout and Zoom for Gold Mineralization Characterization › Geoscience Overview 3 › Geoscience Research 4

A-type granites

2011-8-23  The Keivy peralkaline granite complex consists of 2650-2660 Ma peralkaline granites, 2670 Ma syenogranites, and 2680 Ma alkaline syenites. The granites form sheet-like bodies with thicknesses of a few hundred meters, but have vast exposed

Magmatic-hydrothermal processes and controls on

2021-4-1  The Central Asian Orogenic Belt (CAOB) that stretches from the Ural Mountains to the Pacific Ocean, is one of the world’s largest accretionary orogens (Fig. 1a; Jahn, 2004).There are many peraluminous and alkaline/peralkaline granite associated with rare-metal mineralization formed in an intracontinental environment during Late Mesozoic in the CAOB, such as the metalliferous intrusive

peralkaline granite with gold crusherasia

Silicate melt inclusions from a mildly peralkaline granite in the · PDF 文件 . The mildy peralkaline Eikeren-Skrim granite belongs to the Permian magmatic province of the Oslo rift chloride (801~ silver (962~ and gold

peralkaline granite with gold megustasi.it

peralkaline granite with gold urbancleaningzone.co.za. peralkaline granite with gold. Granite Vs Gabbro Similarities and Differences. Granite is a medium-tocoarse-grained acid igneous rock with essential quartz >20% and feldspar where alkali feldspar constitutes between 100 and 35% of the feldspars and minor mafic minerals Gabbro is a dark

Gold mineralisation in a syntectonic granite dike, Sams

2018-6-14  peralkaline granite dike, Takaka, New Zealand"). Lamprophyre dikes Sulphides and gold locally replace granite in these bleached zones, and quartz veinlets with sulphides and gold fill the fractures. These types of alteration are typical of rocks Granite in these areas is

The nature and origin of gold mineralization at Sams

Gold mineralization is hosted by a peralkaline granite dyke which outcrops over about eight kilometers in the area of Sams Creek, a tributary of the Takaka River, north-west Nelson. The granite is riebeckite and acmite bearing, with antiperthitic alkali feldspars; it has A-type chemistry, implying an origin by partial melting at a temperature

Hydrogen generation during peralkaline granite

2019-9-16  2 generation during alteration of peralkaline granites, we performed hydrothermal experiments on pure arfvedsonite (arfv.) and natural granite (20 wt% arfv.) from Strange Lake. We used gold capsules and a Ti flexible reaction-cell rocking autoclave to investigate the effects of temperature (up to 400°C), chlorinity and pH. Numerous

ZEISS Microscopy Solutions for Geoscience

2021-6-6  gold mineralization particles using non-destructive 3D X-ray microscopy. Peta Pixel Project: Peralkaline granite example showing contextual mineralogy, digitization and correlation. Applications Note: 3D Drill Core Scout and Zoom for Gold Mineralization Characterization › Geoscience Overview 3 › Geoscience Research 4

Apatite from Khan Bogd Peralkaline Granite,

Preliminary results on petrological and geochemical study of the Khanbogd alkaline granite complex, South Mongolia. Mongolian Geoscientist, 21, 53-56. Seltmann, R., Gerel, O., & Kirwin, D. Geodynamics and Metallogeny of Mongolia with a special emphasis on copper and gold deposits.

A-type granites

2011-8-23  The Keivy peralkaline granite complex consists of 2650-2660 Ma peralkaline granites, 2670 Ma syenogranites, and 2680 Ma alkaline syenites. The granites form sheet-like bodies with thicknesses of a few hundred meters, but have vast exposed

Amphibole Supergroup from Khan Bogd Peralkaline

Preliminary results on petrological and geochemical study of the Khanbogd alkaline granite complex, South Mongolia. Mongolian Geoscientist, 21, 53-56. Seltmann, R., Gerel, O., & Kirwin, D. Geodynamics and Metallogeny of Mongolia with a special emphasis on copper and gold deposits.

Department of Earth and Planetary Sciences McGill

Closed system fluid-mineral-mediated trace element behaviour in peralkaline rare metal pegmatites: Evidence from Strange Lake. Chemical Geology, 505, 86-99. Vasyukova, O.V., Williams-Jones, A.E., (2019). Tracing the evolution of a fertile REE granite by modelling amphibole-melt partitioning, the Strange Lake story. Chemical Geology, 514, 79-89.