Tertiary Minerals Regulatory News (TYM)

13 Apr 2005 09:05

Tertiary Minerals PLC13 April 2005 TERTIARY MINERALS PLC NICKEL-COPPER DRILLING TARGETS DEFINED AT NOTTRASK • Nine Conductors Identified within Three Horizons along 750m Long Zone • 3km Long Zone Of Possible Disseminated Mineralisation Extends Along Strike Tertiary Minerals plc, ("Tertiary" or "the Company") announces plans todrill-test new targets for nickel-copper massive sulphides identified by anextensive ground geophysical survey at Nottrask, the Company's main nickelprospect in Sweden. Results from a large loop transient electromagnetic (TEM) survey across theCentral Zone of the Nottrask mafic intrusive confirm a total of nine, closelyspaced, near-surface conductors and one deeper conductor, interpreted toindicate massive-sulphide mineralisation. The near-surface conductors are located on three distinct horizons within astrike length of 750m. An additional zone of low resistivity, extending over 3kmalong strike from the massive sulphide targets, may indicate the presence ofdisseminated nickel-copper sulphide mineralisation or additional, but yetunresolved, massive sulphide zones. Previous exploration at Nottrask, including work by Tertiary, has focused onthe Marginal Zone of the gabbro intrusive and whilst this established theoccurrence of massive sulphides in the Nottrask intrusion, the nickelsulphides found were of low nickel tenor. Subsequent work by Tertiary and by Anthony Naldrett, (Emeritus Professor atUniversity of Toronto and an internationally acknowledged authority on nickelsulphide mineralisation) whilst consulting to Tertiary on Nottrask,highlighted the Central Zone as having the potential to host higher-tenor nickelsulphide mineralisation. The Nottrask intrusion is interpreted to lie in the north-western extension ofFinland's Kotalahti Nickel Belt which hosts numerous past and current producingnickel mines, including Outokumpu's Hitura and Kotalahti mines. The Company considers that targets defined by the recent survey at Nottraskrepresent an exciting opportunity to advance its main nickel-copper project at atime when the market for these commodities is strong. Subject to field validation of anomalies, a drill programme will commence assoon as the Spring thaw is complete. The geophysical survey and interpretationof the results was carried out by Swedish geophysical consulting group GeovistaAB. Further Information: Patrick Cheetham, Tertiary Minerals Plc. Tel: +44 (0)1625-626203. Mobile: +44 (0)7767-458751John Greenhalgh/Ron Marshman, City of London PR Ltd. Tel: +44 ( 0)20-7628-5518 This information is provided by RNS The company news service from the London Stock Exchange