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metabasalt hosted gold quartz stringers

Structural control and hydrothermal alteration DeepDyve

Structural control and hydrothermal alteration DeepDyve

Nov 01 2007 · Read "Structural control and hydrothermal alteration at the BIF-hosted Raposos lode-gold deposit Quadrilátero Ferrífero Brazil Ore Geology Reviews" on DeepDyve the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

Published in Ore Geology Reviews · 2007Authors P A Junqueira · Lydia Maria Lobato · E A Ladeira · E J M SimoesAffiliation Universidade Federal De Minas GeraisAbout Greenstone belt Get Price
Vein (geology)Wikipedia

Vein (geology)Wikipedia

In geology a vein is a distinct sheetlike body of crystallized minerals within a rock.Veins form when mineral constituents carried by an aqueous solution within the rock mass are deposited through precipitation.The hydraulic flow involved is usually due to hydrothermal circulation.. Veins are classically thought of as being the result of growth of crystals on the walls of planar fractures in

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Quartz veins with younger pyrite-gold mineralization

Quartz veins with younger pyrite-gold mineralization

Aug 01 2009 · Quartz veins with younger pyrite-gold mineralization Manitoba Canada Quartz veins with younger pyrite-gold mineralization Manitoba Canada Lin Shoufa 2009-08-01 00 00 00 The photograph (aerial view) shows auriferous quartz veins hosted in a ca. 4 m wide north-trending and steeply dipping dextral ductile–brittle fault zone at the southern margin of the Island Lake greenstone

Published in Journal of Structural Geology · 2009Authors Shoufa LinAffiliation University of Waterloo Get Price
RECONNAISSANCE INVESTIGATIONS OF ANCIENT GOLD

RECONNAISSANCE INVESTIGATIONS OF ANCIENT GOLD

RECONNAISSANCE INVESTIGATIONS OF ANCIENT GOLD MINES IN THE NORTHWESTERN PART OF THE AL AQIQ QUADRANGLE 1-3 m wide and 1-2 m deep along a quartz-stringer zone that trends 30°. Country rock is a granite pod that contains abundant large quartz phenocrysts (dump sample 160066 from northwestern end of dump and 067 metabasalt volcanic

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Vermilion Greenstone GoldMinnesota Department of

Vermilion Greenstone GoldMinnesota Department of

Vermilion Greenstone Gold New Results from Drill Holes Raspberry Intrusion Hosted To 230 ppm Au Pb (galena) Quartz veins Rutile Fe As Mn Cr Se Sn Raspberry Shear zone related Qz vn in metabasalt R-11 R-11 (deformed sheared) Get Price

CHAPTERIII FIELD STUDY AND PETROGRAPHY

CHAPTERIII FIELD STUDY AND PETROGRAPHY

mainly of white quartz of low gold content and with more sulfides the average sulfide content being about 5 weight percent. Hanging wall and foot wall contacts of this reef are generally not well defined and considerable quartz often occurs in the wallrocks in the form of veins veinlets and stringers or dissemination s carrying gold values.

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Bulletin gold prospect Sandstone Sandstone Shire

Bulletin gold prospect Sandstone Sandstone Shire

Widespread low level gold anomalies was found in goethite altered quartz stringers within a porphyry intrusive. The second area was south of the workings along the line of lode. Mineralisation was found associated with banded iron formation and metabasalt hosted in quartz stringers in an upper saprolite zone and open to the south for 600 metres.

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Vein (geology)Wikipedia

Vein (geology)Wikipedia

In geology a vein is a distinct sheetlike body of crystallized minerals within a rock.Veins form when mineral constituents carried by an aqueous solution within the rock mass are deposited through precipitation.The hydraulic flow involved is usually due to hydrothermal circulation.. Veins are classically thought of as being the result of growth of crystals on the walls of planar fractures in

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gold deposits in the Atlin region ultramafic rocks and their contact relationships in the areas of Monarch Mountain and the town of Atlin were mapped at the present scale by the authors. Geology in the eastern sector of the map sheet is obtained from other sources as indicated.

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REDLICH PROJECT ESMERALDA COUNTY NEVADAEly

REDLICH PROJECT ESMERALDA COUNTY NEVADAEly

REDLICH PROJECT ESMERALDA COUNTY NEVADA Property Overview Ely Gold s Redlich Gold Project is located in the Candelaria Hills Esmeralda County Nevada and is one of its key focus properties. The project consists of 76 unpatented lode claims (1 570 acres) in the Rock Hill Mining

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ARTISANAL GOLD ACTIVITY OPENS UP NEW GOLD REEF AT

ARTISANAL GOLD ACTIVITY OPENS UP NEW GOLD REEF AT

metabasalt smoky quartz stringers reef 16.42 Y1805 728881 vein hosted high grade structures that can be mined from the existing Bucks and Geology • Steeply dipping shear and vein hosted lode gold deposits associated with pyrite pyrrhotite and arsenopyrite. These structures lie at the contact between meta-basalts and monzonite

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GILBERTON GOLD ActivEX Limited

GILBERTON GOLD ActivEX Limited

The Gilberton Gold Project is located in an area that is prospective for a number of metals and a wide range of deposit styles. The world-class Kidston breccia hosted Au-Ag deposit occurs in similar geological terrain approximately 50km to the northeast. The Project offers the following prospective geological features

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South Pass greenstone beltWikipedia

South Pass greenstone beltWikipedia

A quartz vein included within the Mary Ellen stock carries visible gold and a quartz stringer within sheared metaleucodacite porphyry dike contained disseminated arsenopyrite and showed 0.01 oz/ton gold along with 0.01 oz/ton silver. South Pass greenstone belt

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Clancy to acquire highly prospective pilbara gold project

Clancy to acquire highly prospective pilbara gold project

A shallow pit sunk into fresh metabasalt 1 00m east of the main workings has exposed mineralisation reported values up to 1.24 g/t gold in a quartz-chlorite porphyry. The porphyry is similar to that observed at John Bull. 550083 637 748 7 657 748 Arizona 0.109 Weak quartz stringers in quartz

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Technical Report and Mineral Resource and Reserve

Technical Report and Mineral Resource and Reserve

Technical Report and Mineral Resource and Reserve Update for the Nzema Gold Mine Ghana West Africa Page i Nzema Mine April 2 2013 1 Summary The Nzema Gold Mine (Nzema) is located in the Western Region of Ghana approximately 280km west of the capital Accra and less than 20km from the coast at Essiama.

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Chapter 5 MINERALISATIONShodhganga

Chapter 5 MINERALISATIONShodhganga

Chapter 5 Mineralisation 108 The gold mineralization in the Nagavi is associated with a deformed iron formation hosted in a polydeformed paragenesis sequence. The gold mineralization is characterized by strong sulphide mineralization silica and auriferous quartz veins developed within a sulphidic chert unit.

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Vein (geology)Wikipedia

Vein (geology)Wikipedia

In geology a vein is a distinct sheetlike body of crystallized minerals within a rock.Veins form when mineral constituents carried by an aqueous solution within the rock mass are deposited through precipitation.The hydraulic flow involved is usually due to hydrothermal circulation.. Veins are classically thought of as being the result of growth of crystals on the walls of planar fractures in

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stringer veins 0.5 to 3.0 cm in width occur within east-west trending felsic porphyry dykes or sills hosted by sericitic metadacites. In one exposure two discrete porphyry units each 1.2 to 3.0 m wide and con­ taining 5 to 77. quartz-tourmaline stringers are present. These subparal­

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(PDF) Yilgarn Star gold deposit Southern Cross greenstone

(PDF) Yilgarn Star gold deposit Southern Cross greenstone

PDF On Jan 1 2001 W.K. Witt and others published Yilgarn Star gold deposit Southern Cross greenstone belt Western Australia geological setting and characteristics of an amphibolite-facies

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GILBERTON GOLD ActivEX Limited

GILBERTON GOLD ActivEX Limited

The Gilberton Gold Project is located in an area that is prospective for a number of metals and a wide range of deposit styles. The world-class Kidston breccia hosted Au-Ag deposit occurs in similar geological terrain approximately 50km to the northeast. The Project offers the following prospective geological features

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Preliminary Description of Mineral Deposit Models (Types

Preliminary Description of Mineral Deposit Models (Types

Preliminary Description of Mineral Deposit Models (Types) for Mongolia metabasalt or greenstone is the essential attribute. Other types are genetic (theoretical) in which case the clastic sediment-hosted Hg deposits (quartz-dickite-cinnabar and the quartz-sericite-cinnabar subtypes) (2) silica-carbonate

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Gold Geology  Prospecting ArizonaGold in Arizona

Gold Geology Prospecting ArizonaGold in Arizona

Gold Geology Prospecting Arizona This district produced more than 2 million ounces of gold from quartz veins in fault zones hosted by granite rhyolite latite and andesite. The veins are simple with many stringers and typically contain andularia quartz and calcite. In

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Carbon isotope studies of auriferous quartz carbonate

Carbon isotope studies of auriferous quartz carbonate

Jun 30 2012 · Carbon and oxygen isotopic compositions of carbonates from auriferous quartz carbonate veins (QCVs) of two orogenic gold depositsAjjanahalli and Guddadarangavvana Halli (G.R. Halli)from the Neoarchean Chitradurga schist belt of the Dharwar craton southern India are examined to understand the origin of the mineralizing fluids.

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dggs.alaska.gov

dggs.alaska.gov

ppm gold. Shear zone consisting of brecciated metabasalt and in some places brecciated metadiorite silicified at most locations up to 5 pyrite with chalcopyrite less than 0.06 fault gouge zones up to 0.1 ft. thick and quartz stringer zones at some locations. From nil to 5.93 ppm gold with from 0.068 to 0.136 ppm the usual range.

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Preliminary Fluid Inclusion Study of Quartz Vein and

Preliminary Fluid Inclusion Study of Quartz Vein and

Preliminary Fluid Inclusion Study of Quartz Vein and Massive-Banded-Stringer Pyrite Mineralization in the Wells-Barkerville Gold Belt East-Central British Columbia By Kathryn P.E. Dunne1 and Gerry E. Ray2 KEYWORDS Economic geology quartz veins massive-banded-stringer pyrite ore gold

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Heath Gold Mine Near Llano Texas The Diggings™

Heath Gold Mine Near Llano Texas The Diggings™

The Heath Gold Mine is near Llano Texas. Historically the site has been part of the Llano Area. The Heath Gold Mine was closed at the time of data entry with no known plans to re-open. Production size when active was considered to be small. The ore mined is composed of gold with waste material consisting primarily of quartz.

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REE geochemistry of auriferous quartz carbonate veins of

REE geochemistry of auriferous quartz carbonate veins of

REE geochemistry of auriferous quartz carbonate veins of Neoarchean Ajjanahalli gold deposit Chitradurga schist belt Dharwar Craton India S. Sarangi a R. Srinivasan b V. Balaram c

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Ore and Alteration Types of the Gold and Copper

Ore and Alteration Types of the Gold and Copper

chlorite and goethite stibnite pyrite and quartz crystals ranging from cryptocrystalline to botryoidal. The stringerstockwork type Cu-Au mineralization in the Suyoc prospect is hosted in argillized andesitic rocks of the Mabuhay Formation. The primary ore minerals are

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(PDF) METAMORPHIC ROCK-HOSTED OROGENIC GOLD DEPOSIT

(PDF) METAMORPHIC ROCK-HOSTED OROGENIC GOLD DEPOSIT

The primary source of secondary (placer) gold in Langkowala area is orogenic gold deposit REFERENCES type in form of sheared/deformed quartz veins/veinlets hosted by metamorphic rocks Groves D. I. Goldfarb R. J. Gebre-Mariam M. particularly mica schist and metasediment Hagemann S. G. and Robert F. 1998 (member of Pompangeo Complex

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Osisko Mining Intersects 34.3 g/t Au Over 4.5 Metres at

Osisko Mining Intersects 34.3 g/t Au Over 4.5 Metres at

May 01 2018 · The first interval contains local visible gold in a ptygmatic tourmaline vein hosted in a porphyritic felsic dike with up to 3 pyrite-tourmaline stringers and pyrite clusters in pervasive silica

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stringer veins 0.5 to 3.0 cm in width occur within east-west trending felsic porphyry dykes or sills hosted by sericitic metadacites. In one exposure two discrete porphyry units each 1.2 to 3.0 m wide and con­ taining 5 to 77. quartz-tourmaline stringers are present. These subparal­

Get Price
Ore and Alteration Types of the Gold and Copper

Ore and Alteration Types of the Gold and Copper

chlorite and goethite stibnite pyrite and quartz crystals ranging from cryptocrystalline to botryoidal. The stringerstockwork type Cu-Au mineralization in the Suyoc prospect is hosted in argillized andesitic rocks of the Mabuhay Formation. The primary ore minerals are

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A1 Gold Mine centennialmining

A1 Gold Mine centennialmining

Gold is associated with intense quartz-ankerite-muscovite-sulphide wall rock alteration around dilational breccia veins with branching quartz-sulphidic stringer veins (Figure 2) or narrow veins (Figure 3) within reverse fault systems hosted by the dyke or where fault offsets show the dyke contact on one vein wall and metasedimentary rocks on

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GOLD EMPLACEMENT AND HYDROTHERMAL

GOLD EMPLACEMENT AND HYDROTHERMAL

stringers associated with minor quartz veins and hosted by magnetic basalt (a first MAG-geophysical target). Therefore gold ores can be classified as being gold– sulfide– and gold–quartz-dominant on the basis of the relative abundance of sulfides and quartz in veins. Gold– sulfide and gold–quartz mineralization types have simi-

Published in Canadian Mineralogist · 2004Authors Abdelhay Belkabir · Claude Hubert · Larry HoyAffiliation Universite De Montreal Get Price
Preliminary Fluid Inclusion Study of Quartz Vein and

Preliminary Fluid Inclusion Study of Quartz Vein and

Preliminary Fluid Inclusion Study of Quartz Vein and Massive-Banded-Stringer Pyrite Mineralization in the Wells-Barkerville Gold Belt East-Central British Columbia By Kathryn P.E. Dunne1 and Gerry E. Ray2 KEYWORDS Economic geology quartz veins massive-banded-stringer pyrite ore gold

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MINFILE Mineral Inventory

MINFILE Mineral Inventory

Gold mineralization occurring in the vicinity of the Bristol workings is hosted by five shear zones (East Hangingwall Main Footwall Tommy Creek) in which the rocks are variably altered to an assemblage of quartz carbonate clay pyrite pyrrhotite and limonite. The

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