Aynak MDSG 2006

50 %
50 %
Information about Aynak MDSG 2006

Published on January 10, 2008

Author: Savin

Source: authorstream.com

Aynak – a world-class sediment-hosted stratiform copper deposit in Afghanistan :  Aynak – a world-class sediment-hosted stratiform copper deposit in Afghanistan Antony Benham, Stan Coats, Fiona McEvoy British Geological Survey Structure:  Structure Introduction Afghanistan and the BGS project Mineral potential of Afghanistan The Aynak copper deposit Geology of the area Style of mineralisation Past mining/exploration activities Current and future activity Summary Introduction to Afghanistan:  Introduction to Afghanistan Turbulent recent history Since the fall of the Taliban in 2001: Hamid Karzai elected President Peaceful elections in 2004 and 2005 Return to stability Mineral occurrences in Afghanistan:  Mineral occurrences in Afghanistan The Kabul Block:  Location of the Kabul Block The Kabul Block Thought to be a terrane accreted to margins of Laurasia 250 Ma Hosts numerous copper occurrences and old workings Tectonic map of Afghanistan:  Tectonic map of Afghanistan Area shown in next slide Slide7:  Geological map of Aynak Slide8:  Cross sections through Aynak Slide9:  Stratigraphic column at Aynak Mineralisation at Aynak:  Mineralisation at Aynak Far right: Finely laminated biotite-feldspar-quartz schist with disseminations and stringers of chalcopyrite. Near right: Porphyroblastic dolomite marble with chalcopyrite. Left: Bornite mineralisation within dolomite marble of the Loy Khwar Formation. 1cm 1cm 1cm Slide11:  Central Prospect, Aynak Slide12:  Central Prospect, Aynak Slide13:  Other occurrences in the Kabul Block Past exploration at Aynak:  Past exploration at Aynak Extensive and detailed exploration by Soviet geologists between1974-76 and 1978-89 including: >150 boreholes 70 trenches 9 adits Surface geological and geophysical surveying Soviet “drill-indicated” resource estimate of 240 Mt @ 2.3 % Cu, however this does not conform to Western classification standards. Current work at Aynak:  Current work at Aynak The BGS have created a database from exploration boreholes All reports relating to Aynak have been translated from Russian to English A 3D model of Aynak has been created in Vulcan Reports and borehole database available on request Slide16:  The Aynak model created in Vulcan is primarily based on borehole data but also includes sections drawn by Soviet geologists Vulcan model of Aynak Left: Section through the western prospect at Aynak looking east through the steeply dipping anticline Slide17:  Vulcan model of Aynak Left: Section through the central prospect at Aynak looking west through the shallow dipping section of the Aynak anticline The mineralised Loy Khwar Formation is the dark green unit 5 Slide18:  Vulcan model of Aynak Slide19:  Vulcan model of Aynak Possible Mineral Deposit Model:  Possible Mineral Deposit Model Summary:  Summary Main features of the Aynak deposit World-class stratabound ore deposit (240 Mt at 2.3 % Cu) Mineralisation hosted within dolomite marbles and calcareous-biotite schists Mineralogy dominated by bornite, chalcopyrite Consists of two prospects, the shallow dipping Central Prospect and the more steeply dipping Western Prospect Central Prospect amenable to open-pitting Other prospects close to Aynak include Darband and Jawkhar suggest Aynak is part of a larger “copper belt”

Add a comment

Related presentations

Related pages

Ppt Theories-of-ore-formation | Powerpoint Presentations ...

View and Download PowerPoint Presentations on THEORIES OF ORE FORMATION PPT. Find PowerPoint Presentations and Slides using the power of XPowerPoint.com ...
Read more

Unicode and Windows XP c

Aynak MDSG 2006. Education. Tweet. 10. 01. 2008 0 views Period 6 CHapter 27. Education. Tweet. 11. 01 ... 2006 11 29 larcenter karlskoga. Education. Tweet ...
Read more

Mining methods - British Geological Survey

Aynak – a world-class sediment-hosted stratiform copper deposit in Afghanistan Antony Benham, Stan Coats, Fiona McEvoy British Geological Survey
Read more