Annual Report 2008 - Office National des Hydrocarbures et des Mines
Annual Report 2008 - Office National des Hydrocarbures et des Mines
Annual Report 2008 - Office National des Hydrocarbures et des Mines
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Lafwila (Au, Ag, Pb, Cu)<br />
On this project located at about 300 km to the<br />
South of Dakhla (Awserd province) and following<br />
the encouraging results obtained on the trenches<br />
carried out in 2007 (10.4 g/t Au over 4 m), a<br />
first survey of 4 core drills totaling 531.6 m was<br />
carried out in an effort to recognize the down<br />
dip of gold bearing structures. The targ<strong>et</strong>ed<br />
structures were intercepted with apparent<br />
gra<strong>des</strong> of 6 m for the second drilling and 6<br />
m and 2.5 m for the fourth drilling. Chemical<br />
analyses are carried out on the samples taken.<br />
Madnat As Sadra (Au, Nb, Ta, U, Platinoïds,..)<br />
In Madna As Sadra prospect, located at 200 km<br />
SE of Dakhla (Awserd province), the geological<br />
control of aeromagn<strong>et</strong>ic and spectroardim<strong>et</strong>ric<br />
anomalies permitted to highlight, in El Ghassaliat<br />
sector, quartzose structures with index gra<strong>des</strong><br />
ranging b<strong>et</strong>ween 0.2 and 0.8 g/t Au on m<strong>et</strong>ric<br />
thickness and iron ore carbonatites with gra<strong>des</strong><br />
reaching 0.5 % Nb 2 O 5 and 470 ppm Ta 2 O 5 , in<br />
Drag sector, and 0.4 % Nb 2 O 5 ; 520 ppm Ta 2 O 5<br />
and 350 ppm U 3 O 8 in Al Farnan sector.<br />
Activity <strong>Report</strong> <strong>2008</strong><br />
Tichka-Est (Au)<br />
The project of Tichka Est, situated at 140 km<br />
South of Marrakech, showed gra<strong>des</strong> ranging<br />
b<strong>et</strong>ween 1 and 14 g/t Au at the occurrence of<br />
the first sampling. Following these encouraging<br />
results, a d<strong>et</strong>ailed geological survey at 1/500,<br />
covering an area of 24 acres, and a lithogeochemical<br />
sampling with results ranging<br />
b<strong>et</strong>ween 0.1 and 33 g/t Au were carried out.<br />
A geophysical study showed that the structure<br />
is deeply rooted. The alluvial prospecting<br />
conducted in this prospect yielded gra<strong>des</strong><br />
reaching 22 g/t Au.<br />
Bas Draa (Au)<br />
In the Bas Draa inlier (Guelmim, Tan Tan and<br />
Assa Zag provinces), prospecting continued in<br />
the Upper and Lower Proterozoic formations in<br />
Ayoun Lghoumane prospect. Samples taken<br />
in the iron ore quartzose structures encased in<br />
sandstones and Pl pelites or in copper indices<br />
borne by quartz veins encased in Infracambrian<br />
bed formations yielded indices in gold (