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Tumi Resources Stakes the Oster Silvberg Silver Prospect, Bergslagen District, Sweden
Tumi Resources Stakes the Oster Silvberg Silver Prospect, Bergslagen District, Sweden.
About this update from Kingsmen Resources Limited
[{"type":"text","content":"\n\n\n\n\nTSXv - TM \nFrankfurt - TUY \nOTCBB - TUMIF\n\nVANCOUVER, Feb. 7 /CNW/ - Tumi Resources Limited (the \"Company\") \n(TSXv - TM; OTCBB - TUMIF; Frankfurt - TUY). Mr. David Henstridge, President,\nis pleased to announce the acquisition, through staking, of the Oster Silvberg\nproperty (312 hectares) within the Bergslagen District of south-central\nSweden.\nThe Bergslagen district lies immediately to the north-west of Stockholm\nand covers an area of approximately 200 kms east-west by 150 kms north-south.\nThe district is underlain by volcanics and sediments which are more than \n2 billion years old. The region has undergone several phases of folding and\nhas been intruded by at least two generations of granitoids. Bergslagen is a\nhighly mineralized district and one of the most important ore districts in\nSweden, containing deposits of iron, manganese, base-metal and silver.\nThe Oster Silvberg mine, located 27 km south of the city of Falun, was\nonce the chief producer of silver in Sweden in the fourteenth and fifteenth\ncenturies, but there has been no production since the mid-1920s. The host rock\nis generally a metamorphosed, fine-grained, bedded potassic rhyolite tuff.\nNear the ore contacts, the rock is often classified as an \"ore quartzite\"\nwhich is actually the tuff that has been altered to mostly quartz, garnet,\nmica, minor andalusite and other metamorphic minerals. The mineral bodies at\nOster Silvberg are found in cross-fractures, spatially related to the\nmetamorphosed tuff formations, which appear to have been formed by the\nregional folding that deformed the host rocks.\nThe principal ore was an argentiferous galena that formed a columnar body\nto the 220 metre level of the mine. Flanking the galena to the north and\nsoutheast occur some narrower pyrite-sphalerite orebodies containing very\nlittle galena and traces of chalcopyrite, quartz and fluorite. Complete mine\nproduction and grade records are not available. Early records indicate that\nsilver production exceeded 32,000 ozs per year. One tabulation shows a total\nof only 2,900 ozs of silver mined in thirteen different years between 1636 and\n1920. The mine suffered several shut-downs in these centuries due to rock\ncaves, owing in part to the reduced production during these times. Various\nassays from the 17th and 18th centuries show that the Oste...