Northgate Minerals Corporation

Northgate Minerals Corporation

September 26, 2005 17:18 ET

Northgate Discovers New Mineralization at Kemess North; Hole KN-05-24 Intersects 307.6 Metres of 0.31 g/t Au and 0.24% Cu

VANCOUVER, BRITISH COLUMBIA--(CCNMatthews - Sept. 26, 2005) - Northgate Minerals Corporation (TSX:NGX)(AMEX:NXG) is pleased to announce that exploration drilling on the Kemess North Offset target has intersected 307.6 metres of 0.31 g/t Au and 0.24 % Cu.

Ken Stowe CEO of Northgate commented: "The significance of this intersection is in the discovery of either the faulted extension of the Kemess North deposit or even a new mineralized system in an open untested area. At this point we do not know how big the system is and whether or not there is a high-grade core similar to the adjacent Kemess North deposit. Given the nature of the block fault systems in the Kemess North region, there is also the possibility that sections of this new mineralized system may have been faulted upwards much closer to the surface. Two additional holes are planned after which we anticipate weather conditions will terminate the program for this year."

As illustrated on the accompanying map and cross section, the hole is located east of the East Bounding Fault, south of the North Bounding Fault and at a lower elevation than the Kemess North deposit. Within the overall mineralized interval (Table 1) there are sections of higher grade gold and copper, the lower one of which is associated with the contact zone between the host Takla volcanic rocks and a monzonite intrusive body.

Table 1 - Assay results from KN-05-24

From To Width Gold Copper
(metres) (metres) (metres) (Grams/tonne) (%)
722 1,029.6 307.6 0.31 0.24
774 812 38 0.48 0.41
966 996 30 0.53 0.36

The follow up holes to discovery hole KN-05-24 are holes KN-05-27 and 28, located 100 metres to the north of KN-05-24. Hole KN-05-27 is a vertical hole that is in progress. Hole KN-05-28 (to be drilled from the same site as hole KN-05-27) will be an inclined hole designed to test the system 200 metres to the east of hole KN-05-27. The two initial holes (KN-05-22B and KN-05-23) in the Kemess North Offset program did not intersect significant mineralization.

To view the Plan view of drill holes relative to Kemess North deposit map please click on the following link:

To view the Cross sectional profile through Kemess North and Hole KN-05-24 map please click on the following link:

Table 2 - Table of Drill Hole Collar Co-Ordinates

Hole_ID Nad83E Nad83N Easting Northing tion Azimuth Dip TDepth
KN-05-22B 636503 6326793 10570 16474 1604 0 90 1206.4
KN-05-23 636888 6326356 16023 10940 1598 0 -90 489.0
KN-05-24 637076 6326419 11133 16081 1730 90 -85 1029.6
KN-05-27 637076 6326519 11133 16181 1705 0 -90

The results of Northgate's 2005 exploration program were reviewed, verified and compiled by Northgate's geological staff that includes a qualified person, Carl Edmunds, P. Geo. for the purpose of National Instrument 43-101. Northgate employs a rigorous quality control, quality assurance program. Assays for the program were completed at ALS Chemex in North Vancouver, BC. The copper analyses were completed by atomic absorption spectrometry (AAS), following a triple acid digestion. Gold analyses were completed by standard one assay ton fire assay with AAS finish.

Northgate Minerals Corporation is a gold and copper mining company focused on operations and opportunities in the Americas. The Corporation's principal assets are the 300,000-ounce per year Kemess mine in north-central British Columbia and the adjacent Kemess North deposit, which contains a Proven and Probable Reserve of 4.1 million ounces of gold. Northgate is listed on the Toronto Stock Exchange under the symbol NGX and on the American Stock Exchange under the symbol NXG.

Forward-Looking Statements

This news release includes certain "forward-looking statements" within the meaning of section 21E of the United States Securities Exchange Act of 1934, as amended. These forward-looking statements include estimates, forecasts, and statements as to management's expectations with respect to, among other things, future metal production and production costs, potential mineralization and reserves, exploration results, progress in the development of mineral properties, demand and market outlook for commodities and future plans and objectives of Northgate Minerals Corporation (Northgate). Forward-looking statements generally can be identified by the use of forward-looking terminology such as "may", "will", "expect", "intend", "estimate", "anticipate", "believe", or "continue" or the negative thereof or variations thereon or similar terminology. Forward-looking statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable by management are inherently subject to significant business, economic and competitive uncertainties and contingencies. There can be no assurance that such statements will prove to be accurate and actual results and future events could differ materially from those anticipated in such statements. Important factors that could cause actual results to differ materially from Northgate's expectations are disclosed under the heading "Risk and Uncertainties" in Northgate's 2004 Annual Report and under the heading "Risk Factors" in Northgate's 2004 Annual Information Form (AIF) both of which are filed with Canadian regulators on SEDAR ( and with the United States Securities and Exchange Commission ( Northgate expressly disclaims any intention or obligation to update or revise any forward-looking statements whether as a result of new information, future events or otherwise.

Contact Information

  • Northgate Minerals Corporation
    Mr. Ken G. Stowe
    President and Chief Executive Officer
    (416) 216-2772
    Northgate Minerals Corporation
    Mr. Jon A. Douglas
    Senior Vice President and Chief Financial Officer
    (416) 216-2774