CORE
🇺🇦
make metadata, not war
Services
Services overview
Explore all CORE services
Access to raw data
API
Dataset
FastSync
Content discovery
Recommender
Discovery
OAI identifiers
OAI Resolver
Managing content
Dashboard
Bespoke contracts
Consultancy services
Support us
Support us
Membership
Sponsorship
Community governance
Advisory Board
Board of supporters
Research network
About
About us
Our mission
Team
Blog
FAQs
Contact us
The Inata deposit, Belahouro District, northern Burkina Faso
Authors
A. André-Mayer
D. Béziat
+6 more
Denis Fougerouse
T. McCuaig
L. Parra-Avila
S. Salvi
R. Seed
L. Siebenaller
Publication date
1 January 2015
Publisher
'Elsevier BV'
Doi
Cite
Abstract
© 2015 Elsevier B.V. The Inata gold deposit is hosted in the Bouroum greenstone belt of northern Burkina Faso and contains ca. 5 Moz of gold resource. The greenstone belt is divided into 4 distinct domains: The Pali West, Pali-Minfo and Fété Kolé domains comprised of variable proportions of mafic to intermediated volcanic, volcaniclastic and sedimentary rocks, and the Sona Basin comprised of feldspathic sandstones and turbidites. Potential Tarkwaian-like conglomerates are rarely observed on the eastern margin of the basin. The stratigraphy is crosscut by a series of intrusions between 2172±15Ma and 2122±4Ma. A complex deformation sequence is recorded in the rocks and has been interpreted in a five stage scheme: early syn-depositional basin margin faults reactivated through time and partitioning all subsequent regional deformation (DeB); N-S compression (D1B >2172Ma); E-W compression (D2B, < ca 2122Ma); NW-SE compression (D3B), and a late N-S compression (D4B). D2B-D4B overprint all rocks, including those of the Sona Basin and Tarkwaian-like conglomerates. Peak metamorphism is mid- to upper-greenschist facies.Mineralisation at Inata is hosted in black shales and volcaniclastic rocks of the Pali-Minfo domain and comprises shear-zone hosted quartz-tourmaline-ankerite veins with associated sulphides dominated by pyrite and arsenopyrite. Three generations of pyrite (py1, py2, py3) and one generation of arsenopyrite (apy2) have been identified. Py1 is parallel to bedding and early D1B foliation and not associated with gold. Py2 and apy2 are coeval, contain up to 1ppm gold and are spatially associated with auriferous quartz veins. Py3 locally overprints previous assemblages and is also associated with Au. Fluid inclusions in quartz indicate H2O to H2O-CO2-NaCl fluids in auriferous quartz veins.Microscopic to macroscopic observation of fabric-mineral-vein crosscutting relationships indicate that mineralisation is syn-D2B, disrupted and remobilised during D3B. All observations and data are consistent with Inata representing an orogenic style of gold mineralisation formed relatively late in the evolution of the host terrane
Similar works
Full text
Available Versions
HAL-INSU
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:HAL:hal-01304791v1
Last time updated on 12/11/2016
espace@Curtin
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:espace.curtin.edu.au:20.50...
Last time updated on 18/04/2019
Archive Ouverte en Sciences de l'Information et de la Communication
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:HAL:hal-01304791v1
Last time updated on 29/04/2016