SANTIAGO, CHILE -- (Marketwire) -- 02/07/13 -- Swingplane Ventures, Inc. (OTCBB: SWVI) (the "Company" or "Swingplane") is pleased to update information pertaining to the Algarrobo property.
The Algarrobo Property (the "Property") is located approximately 850 km north of Santiago, in the III Region, Province of Copiapo, Chile. The city of Copiapo is located approximately 43 km to the southeast of the Property, with the small port city of Caldera 25 km to the east. The Property consists of 32 tenures, comprising a total of 6,161 ha. La Candelaria mine which is located approximately 12 km south of Copiapo along the same trend has mineable reserves of 470 Mt of .95% Cu and 3.1 g/t Ag within a geological resource of 600 Mt at a similar grade. Phelps Dodge and Sumitomo Metal Mining Company signed a $1.5 billion contract in 1992 with the Chilean government to develop La Candelaria.
The Main Mineralized Trend is very well defined through abundant workings, both historical and arising from more recent work, ranging from shallow pits and workings to mine development extending to depths up to 450 m below surface. Taken together, these workings delineate at least three "Major Veins", having clearly evident surface extent up to 1.3 km, with an interpreted potential surface extent of at least 4 km along strike.
The Property is believed to have excellent potential for identification, and subsequent development, of additional high grade copper-bearing veins over a large area. This interpretation is based on the following observations made to date:
•A number of well mineralized veins up to 3.5 m thick and exhibiting continuity along strike for at least 1.3 km have been defined within a well mineralized area at least 8 km long, oriented northeast-southwest, by 2.5 km wide. Historical workings within this trend define at least three major veins (the "Major Veins") and an unknown number of subsidiary and/or en echelon veins characterized by similar high grade copper mineralization.
•Documented copper grades reported for the vein systems vary from background values between 0.3 and 2%, through "low grade" values between 2 and 5%, to "direct shipping ore" averaging 9%, with high grade copper values in excess of 24% (returning analytical values to 46.58%).
•Thin copper veins identified in recently excavated exploratory trenches up to 5.5 km from existing workings have returned initial copper results grading up to 10.37%, interpreted to indicate strong potential for identification of additional, high grade copper-bearing veins well beyond the currently defined Main Mineralized Area.
•Near surface, supergene enrichment extends between 30 and 120 metres below surface, dependent upon surface elevation. This oxidized zone is underlain by a sulphide zone across a mixed transitional zone of variable thickness. The potential depth extent of the sulphide zone is currently unknown, however, there is no information suggesting it is limited to the current depth of the historical underground workings.
•High grade lenses documented in the underground workings appear to have maximum dimensions of 40 m horizontally by 60 metres vertically, tentatively interpreted to represent "blows" along veins, possible damage zones at the intersection of mineralized veins.
•Current development activity, resulting in development of 6 separate drifts, on three separate and distinct veins, is taking place on an area of approximately 145 ha (358 acres); the overall size of the Property is 6,161 ha (15,224 acres).
•Two of the drifts, Descibridora I and Descubridora II, have exposed very high grade copper mineralization (returning analytical values to 46.58%) under eolian sand characteristic of the overburden throughout the Angela tenures. Exposure, and subsequent development, of both the Estaca and, more significantly, the Descubridora I and II, are based on projections of the trend of the respective veins farther west, beyond any previously developed workings on these veins.
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