loading
peralkaline granite with gold

Our Projects

latest works
Ask For Price

The Sams Creek Peralkaline Granite Hosted Gold Deposit

Creek gold deposit do not fit neatly into existing classifications of granite-related gold-bearing deposits. The peralkaline composition of the Sams Creek granite and the absence of molybdenite and paucity of chalcopyrite, are major points of difference with gold-rich porphyry copper deposits. The presence of a low sulfidation-state ore mineral

Ask For Price

The Sams Creek Peralkaline Granite Hosted Gold Deposit

At Sams Creek a peralkaline granite porphyry dyke hosts gold-bearing sulfide-quartz-siderite veins. The granite dyke intrudes Ordovician-Silurian metapelite and quartzite, and has thin lamprophyre dykes along its contacts. The mineralised veins and the granite and lamprophyre dykes have been deformed during several phases of folding, the youngest of which is Early Cretaceous.

Ask For Price

Gold mineralisation in the polymetallic Sams Creek

May 01, 2003· 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 ±

Ask For Price

ALEX STREKEISEN-Peralkaline granite-

Peralkaline granite 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. Hornblende and biotite are the commonest mafic minerals, however, muscovite is also frequently encountered.

Ask For Price

Mineralogical and stable isotope studies of gold–arsenic

· Jan 19, 2006· 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. The lamprophyre dykes occur as thin (< 3 m) slivers along the contacts of the granite dyke.

Ask For Price

Peralkaline and peraluminous granites and related mineral

In the Precambrian Arabian Shield, granitoid plutonic rocks are widespread and range in age from 800 to 550 Ma old; but the mineral-resource potential associated with these plutonic rocks is restricted mainly to the younger, postorogenic granites. Two granite types of current economic interest are zirconium- niobium-enriched per alkaline granites and tin-tungsten-enriched peraluminous granites.

Ask For Price

Rare Metal Deposits Associated with Alkaline/Peralkaline

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

Ask For Price

Gold in Granite & Plutonic Rocks 911 Metallurgist

Jan 20, 2017· In the gold-bearing region of Northern Sonora, Mexico, the gold-veins are chiefly in or closely associated with granitic and plutonic rocks. The veins of El Grupo concession, about 100 miles southeast of Tucson, Arizona, traverse a fine-grained granite, and hear both gold and silver.

Ask For Price

Magmatic-hydrothermal processes and controls on rare-metal

Introduction. Although peralkaline granites are a relatively rare occurrence in the Earth’s crust, a disproportionally large volume of petrological literature has been devoted to their study due to their unique geochemical characteristics and important economic significance (e.g., Martin and Bonin, 1976, Martin et al., 1994, Liverton and Botelho, 2001, Bonin, 2007, Estrade et al., 2014a

Ask For Price

Syenite Wikipedia

Syenite is a coarse-grained intrusive igneous rock with a general composition similar to that of granite, but deficient in quartz, which, if present at all, occurs in relatively small concentrations (< 5%).Some syenites contain larger proportions of mafic components and smaller amounts of felsic material than most granites; those are classed as being of intermediate composition.

Ask For Price

The Sams Creek Peralkaline Granite Hosted Gold Deposit

Creek gold deposit do not fit neatly into existing classifications of granite-related gold-bearing deposits. The peralkaline composition of the Sams Creek granite and the absence of molybdenite and paucity of chalcopyrite, are major points of difference with gold-rich porphyry copper deposits. The presence of a low sulfidation-state ore mineral

Ask For Price

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

Ask For Price

The nature and origin of gold mineralization at Sams Creek

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

Ask For Price

Mineralogical and stable isotope studies of gold–arsenic

Jan 19, 2006· 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. The lamprophyre dykes occur as thin (< 3 m) slivers along the contacts of the granite dyke. δ18Omagma

Ask For Price

Rare Metal Deposits Associated with Alkaline/Peralkaline

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

Ask For Price

ZEISS Microscopy Solutions for Geoscience

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 ›

Ask For Price

Magmatic-hydrothermal processes and controls on rare-metal

Introduction. Although peralkaline granites are a relatively rare occurrence in the Earth’s crust, a disproportionally large volume of petrological literature has been devoted to their study due to their unique geochemical characteristics and important economic significance (e.g., Martin and Bonin, 1976, Martin et al., 1994, Liverton and Botelho, 2001, Bonin, 2007, Estrade et al., 2014a

Ask For Price

A-type granites

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 areas (100-1200 km 2). They are metamorphosed to amphibolite facies and are bounded by gabbro-anorthosite.

Ask For Price

Mineralogy and geochemistry studies on the Nusab El Balgum

Sep 22, 2018· On the other hand, the fresh peralkaline granite is a medium to coarse-grained gray to pink rock that is exposed in a small area of about (275 m × 400 m) in the northeastern part of an incomplete ring-shaped body of hydrothermally altered granite (Figs. 2 and 3b).

Ask For Price

Syenite Wikipedia

Syenite is a coarse-grained intrusive igneous rock with a general composition similar to that of granite, but deficient in quartz, which, if present at all, occurs in relatively small concentrations (< 5%).Some syenites contain larger proportions of mafic components and smaller amounts of felsic material than most granites; those are classed as being of intermediate composition.

Ask For Price

Mineralogical and stable isotope studies of gold-arsenic

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. The lamprophyre dykes occur as thin (< 3 m) slivers along the contacts of the granite dyke. δ<SUP>18</SUP>O<SUB>magma</SUB

Ask For Price

30 September 2020 TRANSFORMATIONAL ACQUISITION OF

Sep 30, 2020· 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

Ask For Price

Department of Earth and Planetary Sciences McGill University

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.

Ask For Price

Little Joe Prospect Western Mining History

Rocks. Name: Peralkaline Granite Role: Host Age Type: Associated Rock Age in Years: 181.000000+- Dating Method: K-Ar Age Young: Middle Jurassic Name: Peralkaline Granite Role: Host Age Type: Associated Rock Age in Years: 171.000000+- Dating Method: U-Pb (zircon) Material Analyzed: Zircon Age Young: Middle Jurassic Name: Peralkaline Granite Role: Host Age Type: Associated Rock Age

Ask For Price

The nature and origin of gold mineralization at Sams Creek

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

Ask For Price

Gold mineralisation in a syntectonic granite dike, Sams

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

Ask For Price

Mineralogical and stable isotope studies of gold–arsenic

Jan 19, 2006· 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. The lamprophyre dykes occur as thin (< 3 m) slivers along the contacts of the granite

Ask For Price

30 September 2020 TRANSFORMATIONAL ACQUISITION OF

Sep 30, 2020· 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

Ask For Price

Hydrogen generation during peralkaline granite

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

Ask For Price

ZEISS Microscopy Solutions for Geoscience

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

Ask For Price

A-type granites

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

Ask For Price

Major- and trace-element composition of REE-rich

Crystallization and destabilization of eudialyte-group minerals in peralkaline granite and pegmatite: a case study from the Ambohimirahavavy complex, Madagascar. Mineralogical Magazine, Vol. 82,

Ask For Price

Mineralogy and geochemistry studies on the Nusab El Balgum

Sep 22, 2018· On the other hand, the fresh peralkaline granite is a medium to coarse-grained gray to pink rock that is exposed in a small area of about (275 m × 400 m) in the northeastern part of an incomplete ring-shaped body of hydrothermally altered granite

Ask For Price

Department of Earth and Planetary Sciences McGill University

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

Ask For Price

Ministry of Petroleum and Mineral Resources Deputy

peralkaline granite, and the tin-tungsten-enriched granites are related to medium-sized plutons of biotite or biotite- muscovite granite. Existing geochemical and geologic data for many parts of the Arabian

Ask For Price

U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL

significance of plutonic rocks including undated peralkaline granite (North View pluton) and Mesozoic rhyolite porphyry dikes. Mineral resources include the Hamme tungsten district (Parker, 1963; Gair, 1977), copper and gold deposits of the Virgilina district (Laney, 1917; Carpenter, 1976; Johnson and others, 1989), and granite

Ask For Price

Li-isotopic evidence for fluid exsolution and

The peralkaline Siwana granite of the Neoproterozoic Malani Igneous Suite in western India hosts a diverse suite of rare earth elements (REE) and high field strength elements (HFSE)-bearing minerals formed during magmatic to post magmatic evolution of the granite

Ask For Price

Structure and Emplacement of the Eocene Golden Horn

The Eocene (~50-45 Ma) magmatism is characterized by granodiorite, granite, and peralkaline rocks in the North Cascades, which contrasts with the dominantly tonalite, ~96-60 Ma arc plutonism (Misch,