Exploration
Selwyn commenced drilling on Selwyn Project in 2005 and has completed 93,981 metres of diamond drilling in 373 drill holes that have defined the Selwyn deposits over a strike length of approximately 38 kilometres. Initially, drilling was focused on shallow mineralization amenable to open pit mining methods; however, as drilling progressed drilling focus shifted to defining high grade mineralization in which the high grade mineral zones were followed both along strike and down dip.
As of the end of the 2009, mineral resources have been defined in 15 deposits that are separated by structural breaks or gaps in drilling. The zinc-lead mineralization appears to define, what was originally one large laterally continuous deposit that has been deformed by folding and faulting defining numerous structural panels. Within many of these structural panels high grade mineralization has been found in several of the deposits over a length of more than 15 kilometres; high grade mineral resources have been defined in five of the mineral deposits.
| Year |
Number of Drill Holes |
Metres |
| 2005 |
53 |
8,317.0 |
| 2006 |
191 |
40,587.7 |
| 2007 |
107 |
37,006.4 |
| 2008 |
13 |
3,857.0 |
| 2009 |
9 |
4,213.1 |
| Total |
373 |
93,981.2 |
The proposed 2010 drilling will focus on upgrading Inferred mineral resources in the XY Central, XY West and Don zones to the Indicated category, and expansion of these zones.
2009 Exploration Program
A total of 4,213 metres of drilling were completed in 9 drill holes in the XY West deposit area. The new drill intercepts have significantly expanded the known extent of high grade mineralization. The zinc-lead mineralized Active Member has been defined over a 250 metre strike length with an approximate true thickness of 6 to 24 metres for the Active Member. Insufficient drilling has been done to adequately define the dip length for the XY West deposit.
Initially, the XY West deposit was interpreted as the strike extension of the Anniv Central deposit along the northeasterly dipping southern limb of the XY synclinal structure. However, recent drilling indicates that the XY West zone dips to the southwest and lies to the south of a major fault that truncates the limb of the XY synclinal structure and therefore is located in a distinctly separate structural panel. The XY West deposit remains open for expansion of its mineral potential and defines a new structural panel for expansion of high grade mineralization. Additional drilling is required to determine continuity within this structural panel and the numerous fault offsets suggested by the current 3D interpretation.
In addition to the modest drilling program, Selwyn continued environmental baseline and engineering studies and undertook scoping level engineering evaluation of the initial development of the Selwyn Project as a series of underground mines focused on the high grade mineral zones. Preliminary modeling is premised on mining XY Central deposit at 5,000 tonnes/day and the Don Zone at 3,000 tonnes/day to feed a central concentrator processing 8,000 tonnes/day. Selwyn also undertook preliminary engineering on the feasibility of a concentrate pipeline to transport concentrates to the Robert Campbell highway.
Related Documents
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Date - Title - Description |
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2008 Exploration Program
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PDF |
139 kb |
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2007 Exploration Program
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PDF |
144 kb |
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2006 Exploration Program
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PDF |
139 kb |
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2005 Exploration Program
Click here to download. |
PDF |
143 kb |
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