Additional Drilling Results From Montagne d'Or

 

VANCOUVER, BC - Columbus Gold Corporation reported on the progress of the Phase II diamond drilling campaign currently underway at its Montagne d'Or gold deposit, Paul Isnard Project, French Guiana.

Forty-seven (47) drill holes (106 to 152) have been completed, for a total of 5,900 meters, as part as of a 26,600 meter (135 holes) drilling program. In addition, six (6) large diameter HQ-calibre core holes (1,000 m) were completed for detailed metallurgical testing as part of a preliminary economic assessment study (PEA). A second track-mounted diamond drill rig has been shipped from Canada and is expected to arrive on site in May with the aim of completing the Phase II program in September.

The holes drilled to date in the current program are short holes at the northern base of the Montaigne d'Or deposit, designed to test the near surface projection of the secondary Lower Favorable Zone (LFZ) and Footwall Zone (FWZ). Some of the holes were collared into the principal Upper Folic Zone (UFZ) to reach the LFZ. All holes intersected sulphide-gold mineralised intervals.

Gold assay results were previously released for 18 holes (106 to 123) and results have been received for an additional 18 holes (124 to 141).

Diamond drill holes were bored with HQ-size core in the upper oxidized saprolitic zone and NQ-size core in fresh rock. The core was placed in plastic core boxes with covers and delivered by the drilling contractor, Performax Drilling Inc., a Canadian company with qualified personnel, to the Citron camp logging facilities, located 5 km from Montagne d'Or. Columbus Gold personnel are present at the camp at all times during the drilling program.

The core was photographed for reference, logged (geotechnical and geological) and identified sulphide mineralised sections were sawed in half. Sample lengths vary between 0.5 to 1.5 meters. Individual half core samples were placed in canvas bags and sealed by batch of 9 samples in polypropylene bags for air transport to the Cayenne and trucking to Filab Amsud laboratory in Paramaribo, Suriname, an ISO 9001 and ISO / IEC 17025 accredited laboratory. The remaining half core is stored in core racks on site at Citron camp for reference. Samples were assayed for gold by fire-assay method using an atomic absorption finish on a 50-gram pulp split.

A quality assurance and quality control program (QA/QC) was implemented by Columbus Gold and Filab Amsud to insure the accuracy and reproducibility of the analytical method and results are maintained. The QA/QC program includes the insertion of standards, blanks and field duplicates in each laboratory assay batch and systematic re-assaying of samples returning values above 5 g/t Au by the fire-assay method using a gravimetric finish on a 50-gram pulp split. As well, 10% of random sample pulps are sent to SGS del Peru S.A.C. laboratory for gold check assaying.