African Copper Plc Matsitama Belt Exploration Returns High Grade Copper-Silver Drill Intersections.LONDON -- African Copper Plc (TSX TSX Toronto Stock Exchange (TSE before April, 2002) TSX Transfer from Stack Pointer to Index TSX True Space Extension :ACU ACU See: Asian currency units )(AIM:ACU)(BSE See Bombay Stock Exchange. BSE See Boston Stock Exchange (BSE). :African Copper) : - Drilling at the Thakadu-Makala deposits has shown the presence of a strataform, stratabound disseminated copper deposit within Proterozoic-folded metasediments of the Matsitama Belt. This mineralization Mineralization The process by which the body uses minerals to build bone structure. Mentioned in: Rickets mineralization, n the bioprecipitation of an inorganic substance. is similar to that found and mined within the Zambian Copper Belt. - 4.45% copper and 1.97 oz/t silver over a true width of 12.74 metres at Thakadu. - 2.64% copper and 2.52 oz/t silver over a true width of 6.24 metres at Makala. - Thakadu is about 2000 metres along strike from Makala. Exploration between the two deposits has been sporadic in the past. Surface geochemistry indicates that the mineralization can be traced for a further 2000 metres beyond Makala. African Copper Plc ("African Copper" or the "Company") announces the results of the initial drilling from the first of the high priority targets in the Matsitama Schist schist (shĭst), metamorphic rock having a foliated, or plated, structure called schistosity in which the component flaky minerals are visible to the naked eye. belt. The Thakadu and Makala deposits are sediment-hosted stratabound disseminated sulphide zones in a metamorphosed sedimentary sequence with minor volcanic and volcaniclastic units. African Copper placed a drill hole into each deposit in late 2005 to confirm geology, mineralization and tenor of copper and silver. The drill hole into Thakadu returned 4.45% copper and 1.97 oz/t of silver over a true width of 12.74 metres. The drill hole into Makala returned 2.64% copper and 2.52 oz/t silver over a true width of 6.24 metres. The primary sulphide minerals are chalcopyrite (85-90%) and bornite bornite Common copper-ore mineral, copper and iron sulfide (Cu5FeS4). Typical occurrences are found in Mount Lyell, Tasmania; Chile; Peru; and Butte, Mont. Bornite may form isometric crystals but occurs most commonly as irregular masses. (10-15%) with minor pyrite pyrite (pī`rīt) or iron pyrites (pīrī`tēz, pə–, pī`rīts), pale brass-yellow mineral, the bisulfide of iron, FeS2. adjacent to the copper bearing material. The deposits carry up to 6 oz/t of silver and average about 2 oz/t over the mineralized min·er·al·ize v. min·er·al·ized, min·er·al·iz·ing, min·er·al·iz·es v.tr. 1. To convert to a mineral substance; petrify. 2. To transform a metal into a mineral by oxidation. 3. unit. The upper 50 metres of the deposits are characterized by secondary zones of oxidation where the primary sulphides are replaced by chalcocite chalcocite Sulfide mineral, Cu2S, that may be an important ore of copper. It belongs to a group of sulfide minerals formed at relatively low temperatures. Chalcocite alters to native copper and other copper minerals. , malachite malachite (măl`əkīt), a mineral, the green basic carbonate of copper occurring in crystals of the monoclinic system or (more usually) in masses. It is translucent or opaque; the luster is silky, vitreous, adamantine, or dull. and cuprite-tenorite together with traces of native copper and marcasite marcasite (mär`kəsīt) or white iron pyrites, a mineral closely resembling and having the same chemical composition (FeS2) as pyrite. . Previous operators completed extensive metallurgical tests that showed a copper recovery of 90 to 96% can be achieved by flotation of the sulphides producing a sulphide concentrate containing 28 to 32% copper and approximately 250 g/t silver (Please see "Technical Report on the Dukwe Copper Project and Matsitama Prospecting Licences Botswana, Africa" dated May 5, 2005 prepared by ACA ACA - Application Control Architecture Howe International Limited and available on SEDAR SEDAR System for Electronic Document Analysis and Retrieval SEDAR Southeast Data, Assessment, and Review at www.sedar.com or the Company's website at www.africancopper.com). Joe Hamilton Joe Hamilton can refer to more than one person:
The officer of a firm responsible for day-to-day management, usually the president or an executive vice-president. of African Copper, commented "The deposits at Thakadu and Makala show striking similarities to the sedimentary hosted copper deposits of Zambia and the Congo. The structural setting, age of mineralization and associated rock types and mineralogy mineralogy Scientific study of minerals, including their physical properties, chemical composition, internal crystal structure, occurrence and distribution in nature, and origins or conditions of formation. are almost identical to those found in some of the larger copper deposits. The grade is certainly equivalent. These deposits lie within Botswana which has a low geopolitical ge·o·pol·i·tics n. (used with a sing. verb) 1. The study of the relationship among politics and geography, demography, and economics, especially with respect to the foreign policy of a nation. 2. a. risk, good infrastructure and a skilled workforce. The proximity to road, rail, power and water may be of significant benefit to the potential development of these deposits." The Thakadu-Makala area is approximately 70 kilometres to the southeast of the Company's flagship Dukwe Project within the prolific Matsitama Metasedimentary Belt. The Prospecting Licence surrounding the Thakadu-Makala area was granted to African Copper on 1 January 2005. Subsequently, the Company has completed an extensive review of historical data, and drilled these two test holes into each target late in 2005. Thakadu and Makala lie at the eastern end of a 40 kilometre long mineralized belt which contains numerous showings of sedimentary hosted copper-silver, copper-lead-zinc and zinc-silver. The deposits are approximately 2000 metres apart, but only sporadic exploration has been conducted between the two deposits. Surface geochemistry and geophysics, as well as geologic mapping and trenching indicates that the folded stratigraphy stratigraphy, branch of geology specifically concerned with the arrangement of layered rocks (see stratification). Stratigraphy is based on the law of superposition, which states that in a normal sequence of rock layers the youngest is on top and the oldest on the is probably continuous between the two deposits, and that mineralization may extend for up to 2000 metres to the west of Makala. These deposits are five to ten kilometres from the Francistown-Orapa paved highway. The dataset over the deposits includes approximately 39,000 metres (156 holes) of surface percussion and diamond drilling Diamond Drilling is a highly specialized industry used for mineral exploration around the world. Most commonly using wireline and core bits with diamond encrusted matrix. To drill holes to max depths of twelve thousand feet, for the recovery of core used in verifying mineral , prospect shafts to a depth of approximately 70 metres on each deposit with a combined 620 metres of lateral development, 882 metres of underground diamond drilling, 3 tonne samples of oxide and sulphide material for bench scale metallurgical test work, 180 tonnes of sulphide mineralization taken for pilot plant test work and a variety of hydrogeological, geotechnical, and mineralogical min·er·al·o·gy n. pl. min·er·al·o·gies 1. The study of minerals, including their distribution, identification, and properties. 2. A book or treatise on mineralogy. investigations. The deepest drill holes attain a vertical depth of about 550 metres and were still well mineralized indicating that the down dip potential is significant. This work culminated in the late 1990s with a fully permitted Mining Licence granted over the concession. No construction ever commenced and the Mining Licence defaulted back to the Botswana government in late 2003. The area became open for acquisition in March of 2004 and a Prospecting Licence was granted to African Copper in January 2005. Four feasibility studies were completed on the Thakadu and Makala deposits by previous operators between 1980 and 1993. These studies noted a number of constraints to development at that time including available water and electrical power supplies and a lack of skilled workers in the region. The infrastructure situation has changed in the region with marked improvements in the available human resources The fancy word for "people." The human resources department within an organization, years ago known as the "personnel department," manages the administrative aspects of the employees. , water and power supplies. The Thakadu and Makala deposits need to be re-evaluated in the light of these changes. African Copper intends to complete a feasibility study "A Feasibility Study" is an episode of the original The Outer Limits television show. It first aired on 13 April, 1964, during the first season. It was remade in 1997 as part of the revived The Outer Limits series with a minor title change. on these deposits. The Company will initiate a drill programme to systematically drill the four kilometre strike extent of favourable stratigraphy over the next eight months. Drilling is planned to commence shortly with at least three drills assigned to the project. A table showing the composite assay intervals for the diamond drill holes is shown below. A plan map showing the location of historical holes and these holes is available on the African Copper website at www.africancopper.com. Cross sections of the drill holes reported herein are also available on the website. Mr. Joseph Hamilton, P.Geo., and Chief Operating Officer of African Copper, is a "qualified person" as defined in Canada by National Instrument 43-101. This press release has been prepared under Mr. Hamilton's supervision. Mr. Hamilton has verified the data disclosed in this press release including the sampling, analytical and test data underlying the information. Table 1: Selected Drill Intersections ------------------------------------- Thakadu Hole: TH6A --------------------------------------------------------------------- From To Width Copper Silver (m) (m) (m) % oz/t --------------------------------------------------------------------- 28.85 29.80 0.95 0.85 0.10 29.80 30.78 0.98 0.14 0.10 30.78 31.17 0.39 0.02 less than 0.03 31.17 31.83 0.66 0.04 less than 0.03 31.83 32.80 0.97 0.22 less than 0.03 -------------------------------------------------- 32.80 33.41 0.61 2.17 0.10 33.41 34.43 1.02 4.74 4.76 34.43 35.03 0.60 7.03 2.03 35.03 35.80 0.77 6.26 4.82 35.80 36.53 0.73 6.99 6.04 36.53 37.23 0.70 5.74 1.03 37.23 37.93 0.70 3.78 1.00 37.93 39.00 1.07 3.42 0.84 39.00 39.96 0.96 4.06 1.70 39.96 40.50 0.54 4.66 1.80 4.45% copper, 40.50 40.99 0.49 3.66 1.00 1.97 oz/t silver 40.99 41.80 0.81 4.27 1.22 ----------------- 41.80 42.54 0.74 4.77 1.54 12.74 metres true 42.54 43.22 0.68 4.24 0.55 width 43.22 43.74 0.52 3.48 0.61 43.74 44.62 0.88 2.42 0.71 44.62 45.37 0.75 4.09 1.06 45.37 45.96 0.59 5.96 3.73 45.96 46.66 0.70 3.45 1.70 -------------------------------------------------- 46.66 47.54 0.88 0.11 0.16 47.54 48.19 0.65 0.71 0.06 48.19 48.75 0.56 0.06 less than 0.03 48.75 49.40 0.65 0.31 less than 0.03 49.40 49.95 0.55 0.27 less than 0.03 --------------------------------------------------------------------- Makala Hole: MA106A --------------------------------------------------------------------- From To Width Copper Silver (m) (m) (m) % oz/t --------------------------------------------------------------------- 142.00 142.50 0.50 0.07 0.03 142.50 143.08 0.58 0.07 0.10 143.08 143.57 0.49 0.02 0.06 143.57 144.18 0.61 0.09 less than 0.03 -------------------------------------------------- 144.18 144.69 0.51 1.27 0.32 144.69 145.69 1.00 3.38 4.82 145.69 146.69 1.00 4.34 6.14 146.69 147.69 1.00 3.20 3.76 147.69 148.69 1.00 3.17 2.54 148.69 149.19 0.50 4.87 2.54 2.64% copper, 149.19 149.69 0.50 2.46 0.51 2.52 oz/t silver 149.69 150.19 0.50 1.08 0.26 ----------------- 150.19 150.69 0.50 0.76 0.23 6.24 metres true 150.69 151.19 0.50 2.08 0.90 width 151.19 151.69 0.50 2.01 1.03 151.69 152.29 0.60 1.05 0.45 -------------------------------------------------- 152.29 152.79 0.50 0.10 0.10 152.79 153.79 1.00 0.10 0.13 --------------------------------------------------------------------- Note: The intersection widths shown in the table above are not true widths since the holes were drilled to the north-northeast into the mineralized zone that dips to the south-southwest. The composite intersection reported in the right columns has been corrected to true width using the stratigraphic stra·tig·ra·phy n. The study of rock strata, especially the distribution, deposition, and age of sedimentary rocks. strat contact angle to core axis. Samples of half core were placed into sealed bags by African Copper personnel under the direct supervision of our Chief Geologist at our Francistown core-logging facility. These samples were transported by commercial carrier to Johannesburg. All sample preparation and analyses are completed at ALS Als (äls), Ger. Alsen, island, 121 sq mi (313 sq km), Sønderjylland co., S Denmark, in the Lille Bælt, separated from the mainland by the narrow Alensund. Chemex laboratories in Johannesburg (ISO (1) See ISO speed. (2) (International Organization for Standardization, Geneva, Switzerland, www.iso.ch) An organization that sets international standards, founded in 1946. The U.S. member body is ANSI. 17025 accredited accredited recognition by an appropriate authority that the performance of a particular institution has satisfied a prestated set of criteria. accredited herds cattle herds which have achieved a low level of reactors to, e.g. and independent of African Copper). Copper assays were completed using standard preparation of crushing to 70% less than 2 mm followed by splitting and pulverizing to 85% less than 75 micron. Analyses were generally completed utilizing 27 element four-acid ore-grade ICP-AES ICP-AES Inductively Coupled Plasma Atomic Emission Spectroscopy ICP-AES Inductively Coupled Plasma Atomic Emission Spectrophotometry . Copper and silver analysis were conducted to parts-per-million precision and converted to percent and oz/t by African Copper personnel. QA/QC QA/QC Quality Assurance/Quality Control procedures included the submission of systematic blanks and both low-grade and high-grade standard samples within the sample batches submitted to ALS Chemex. Control samples comprised approximately 20% of all samples submitted. No referee analysis has yet occurred. The results of the QA/QC programme for copper and silver analyses have been reviewed by African Copper's Chief Geologist and Mr. Joseph Hamilton, P.Geo. The control samples returned acceptable analytical results within industry standards. African Copper is a tri-listed (AIM, TSX, Botswana Stock Exchange The Botswana Stock Exchange is a small but thriving stock exchange located in Gaborone, Botswana. The Botswana share market was established in 1989 and became the Botswana Stock Exchange in 1995. It is governed by the Botswana Stock Exchange Act. ) international exploration company. African Copper has a 100% undivided interest undivided interest n. title to real property held by two or more persons without specifying the interests of each party by percentage or description of a portion of the real estate. in the 4,000 sq km Matsitama exploration concession which contains the Thakadu-Makala deposits in addition to a further 9 high priority drill-ready targets and 35 lower priority targets. African Copper has approximately 52 million shares outstanding. This document may contain or refer to forward-looking information, including reserve and resource estimates, and is based on current expectations that involve a number of business risks and uncertainties. Factors that could cause actual results to differ materially from any forward looking statement include, but are not limited to, failure to establish estimated resources and reserves, the grade and recovery of ore which is mined varying from estimates, capital and operating costs operating costs npl → gastos mpl operacionales varying significantly from estimates, delays in obtaining or failures to obtain required governmental, environmental or other project approvals, inflation, changes in exchange rates, fluctuations in commodity prices, delays in the development of projects and other factors. Forward-looking statements are subject to significant risks and uncertainties, and other factors that could cause actual results to differ materially from expected results. Readers should not place undue reliance on forward-looking statements. These forward-looking statements are made as of the date hereof and we assume no responsibility to update them or revise them to reflect new events or circumstances. Further information about our properties, to download a copy of our Annual Report, any technical report or to access our Press Release Archive please visit.www.sedar.com or our website at www.africancopper.com. African Copper Plc (TSX:ACU) (AIM:ACU) |
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