Business
Tailings sampling at Kalengwa
Tailings sampling at Kalengwa.
About this update from Xtract Resources Plc
[{"type":"text","content":"\n \nRNS Number : 6637J Xtract Resources plc 20 August 2019 \n\n \n \nFor immediate release\n20 August 2019\n \nXtract Resources Plc\n(\"Xtract\" or the \"Company\")\nTailings sampling at Kalengwa Copper Project Zambia (\"Kalengwa\")\n \nThe Board of Xtract Resources Plc (\"Xtract\" or the \"Company\") is pleased to announce assay results from preliminary sampling of mine tailings at the Kalengwa Copper Project Zambia (\"Kalengwa\").\n \nHighlights\n \n· Preliminary sampling by Xtract within the Kalengwa mine tailings dumps yields an average grade of 1.03% Cu, 4.44ppm Ag \n· Xtract's sampling supports previously reported tailings grades \n· Kalengwa Mine operated in the 1970's and was one of the highest grade copper deposits in Zambia\n· Further systematic sampling planned to more accurately define the tailings resource, while metallurgical recovery test work is under way\n \nColin Bird, Executive Chairman said: \"This is a very pleasing result confirming copper grades in tailings over a large sample population, similar to results reported in archive information. We are currently undertaking metallurgical test work aimed at assessing the optimal method of copper recovery through mineral processing, upgrading or separation at site. Work is continuing at Kalengwa to enhance local infrastructure to facilitate the planned operation.\n \nWe intend in the near term to undertake drilling to assess primary ore potential to the north and south of the former open pit.\"\n \nSampling programme\nHistoric mining and processing operations at the high-grade Kalengwa copper mine generated tailings which were contained initially in a tailings storage facility, reportedly 6-8m deep, while later tailings were deposited directly into an adjacent swamp. According to a 2013 report by a previous site operator, Lunga Resources Limited, periods of poor concentrator recovery at the mine resulted in relatively high-grade copper material being sent to tailings. \n \nIn July 2019 the Company undertook a preliminary confirmatory sampling programme along three hand-dug trenches across the tailings dumps. Two trenches were opened within the main tailings facility, while the third was within the swamp area, for a total of 420m. Trench ...