공시 • Nov 19
Antler Gold Inc. Announces the Delineation of Sandamap East and Drill Ready Targets At Its W1 Target, Western Erongo Gold Project, Namibia
Antler Gold Inc. announced the delineation of a previously unmapped shear zone at its W1 Target on the Western Erongo Gold Project, Namibia. Sandamap East, which runs parallel to and shares many similarities with the historically mapped Sandamap Auriferous Shear Zone ("Sandamap Shear") was delineated as a result of a recently completed IP survey and geological mapping across and to the east of the Sandamap Shear. Antler's exploration activities have outlined a number of drill ready targets along the Sandamap Shear below the extent of the shallow historic drilling as well as delineated a number of new targets on Sandamap East. The IP survey, conducted by Remote Exploration Services (Pty) Ltd. ("RES"), comprised 49 line kilometers transecting the 3.5 kilometer strike extent of the Sandamap Shear zone . The survey, which is capable of indirectly detecting sulphide mineralization that could be associated with gold, has added a valuable new layer of data. Concurrent with the IP survey, geological traverse field mapping was completed to aid in interpreting the IP survey results. The newly mapped Sandamap East shear zone is defined by chargeability anomalies in the IP data, similar in form and intensity to the auriferous Sandamap Shear. The Sandamap East shear zone was also geochemically sampled and results are expected in approximately three weeks. A number of targets have been defined by high chargeability anomalies in the IP data. Exploration targets have been prioritized according to the strength and depth of the IP anomaly, coincidence with elevated gold-in-soil anomalies, as well as favourable geological and structural settings. The IP survey utilised a pole-dipole electrode configuration with a receiver array consisting of 8 channels. The IP survey was conducted along a series of 25 survey lines each approximately 2 km in length. An electrode and receiver station spacing of 50m and line spacing of 150m was utilised. An IP survey produces two sets of data namely chargeability and resistivity. The chargeability is of particular use in the Sandamap setting, as it indirectly detects disseminated sulphide mineralization, which has the ability to hold a measurable charge thus producing a chargeable anomaly. The resistivity is also of value as it potentially allows the differentiation of rock units and silicic alteration below surface. The IP data collected have been processed and inverted in both 2D and 3D space producing a resultant 3D volume of chargeability and resistivity over the entire survey area. Thus isoshells, depth slices and profile sections may be extracted to highlight potential chargeable targets which may represent sulphide mineralisation. Of particular importance is that the IP survey has produced targets that were not distinctly visible in the ground magnetic data previously collected over the W1 target. The historical shallow drilling at Sandamap demonstrated that gold is more closely associated with arsenopyrite, which is non-magnetic, than with pyrrhotite, a high temperature, magnetic iron sulphide. The W1 target lies within the Kuiseb Formation, a sequence of meta-turbidite sediments, which was tightly folded during the Damaran Orogen. It is bounded to the NW by an anticlinal dome, consisting of Nosib and lower Swakop Group metasediments, and the SE by a late-Damaran leucogranite dome. The gold mineralization at Sandamap is hosted in a highly altered high strain shear zone within upper amphibolite facies sillimanite-biotite schists. The NNE trending shear zone dips steeply towards the ESE, is defined by ferruginous quartz veins, gossan stringers and mylonite rocks and is parallel to the regional Welwitschia Lineament responsible for the development of the important D3/D4 Damaran structures which can be significantly mineralised. Gold mineralization is associated with sulphide (arsenopyrite, pyrrhotite, pyrite and galena, occurring both as disseminated grains and centimetre scale veinlets) and silica alteration. Geochemical data indicates a strong correlation between gold and arsenic. Most of the shear zone is covered by scree, alluvium or calcrete and outcrop is scarce. The IP data over the W1 Target were collected by Remote Exploration Services (Pty) Ltd. RES has been active in Africa since 2006 offering geological and geophysical consulting and contracting services to the mining and exploration industry. Specifically, RES specialises in the collection, processing and interpretation of Electro-Magnetics (EM), Induced Polarization and Resistivity (IP), Natural Source Magneto-Tellurics (NSAMT), Gravity, Radon Emanometry and Magnetic geophysical data. Surveys have been performed in support of major mining projects at Namdeb, Husab Uranium, Skorpion Zinc, Kumba Iron Ore, Vedanta Resources as well as assisting in exploration for numerous major and junior mining /exploration companies throughout Africa.
