Abstract
The Yloejaervi Cu-W deposit in southwest Finland is located at the western end of the Svecokarelidic Tampere schist zone, which consists of argillaceous sediments and volcanics. The deposit was mined from 1942 to 1966. During that time a total of 4,013,500 tons of ore were hoisted, from which 128,343 tons of copper concentrate, 894 tons of scheelite concentrate, and 2,100 tons of arsenopyrite concentrate were produced.The mineralized rock is confined to a tourmaline breccia close to the Haemeenkyroe granodiorite, both some 1,850 m.y. in age. The breccia fragments, which are tuffite and porphyrite, are enveloped by a quartzose alteration seam about 1 cm thick. The matrix is composed of tourmaline with variable amounts of chalcopyrite, arsenopyrite, pyrrhotite, scheelite, and some accessory ore minerals.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
