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Tumi Resources commences airborne EM geophysical surveys at Tomtebo, Oster Silverberg and Vitturn projects, Bergslagen District, Sweden
Tumi Resources commences airborne EM geophysical surveys at Tomtebo, Oster Silverberg and Vitturn projects, Bergslagen District, Sweden.
About this update from Kingsmen Resources Limited
[{"type":"text","content":"\n\n\n\n\nVANCOUVER, Oct. 31 /CNW/ - Tumi Resources Limited (\"Tumi\" and/or the\n\"Company\") (TSXv-TM; OTCBB - TUMIF; Frankfurt - TUY). David Henstridge,\nPresident, is pleased to announce the start of an airborne (by helicopter)\nelectromagnetic (EM) geophysical survey (the \"Survey\") over the Company's\nwholly-owned Tomtebo, Oster Silvberg and Vitturn licence areas located in the\nBergslagen District, Sweden. The Survey will involve approximately 500 line\nkms of flying and data recording on lines spaced 100m apart and covering the\nlicence areas.\nTomtebo: The historic Tomtebo mine is located 25 km southeast of the city\nof Falun, Sweden. Earliest records indicate that the Tomtebo mine was first\ndiscovered and developed in the mid-seventeenth century, but detailed\nproduction records were kept only in the early part of the twentieth century.\nThe mine has been closed since 1969. The host rocks are cordierite quartzite\nand mica schists which grade into biotite-andalusite bearing quartzite. These\nrocks are derived from highly potassic rhyolite tuffs.\nCopper ore at the Tomtebo mine occurred in small folds as lenses or\nstringers in an anticline. Between 1836 and 1837, 1,841 tons of copper and\n1,077 tons of sulphur were produced. The copper content of the ore varied from\n3.0% to 5.3% between the years 1915 and 1919. The average ore grade during the\nlast phase of mining, between 1965 and 1969, was about 1% copper, 1% zinc and\n35% sulphur. An assay of fairly pure chalcopyrite (copper ore) gave 140 g/t\nsilver and 9 g/t gold.\nOster Silverberg: The Oster Silverberg mine, located 27 km south of the\ncity of Falun, was once the chief producer of silver in Sweden in the\nfourteenth and fifteenth centuries, but there has been no production since the\nmid- 1920's. The host rock is generally a metamorphosed, fine-grained, bedded\npotassic rhyolite tuff. Near the ore contacts, the rock is often classified as\nan \"ore quartzite\" which is actually the tuff that has been altered to mostly\nquartz, garnet, mica, minor andalusite and other metamorphic minerals. The\nmineral bodies at Oster Silvberg are found in cross-fractures, spatially\nrelated to the metamorphosed tuff formations, which appear to have been formed\nby the regional folding that deformed the host rocks.\nThe principal ore was an argentiferous galena that formed a c...