Precious metals exploration company, Lincoln Mining announced that it has concluded the core drilling operations in 20 angle holes at its La Bufa property located in Chihuahua State, Mexico.
This property lies in the Guadalupe y Calvo mining district that covers an epithermal gold-silver system.
Stockworks and quartz-breccia veins, which host gold-silver mineralization, are localized in an intricate zone of high-angle structures. Core drilling targeted two regions, which were outlined by geophysics, surface sampling, and geologic mapping. Drill work was concluded in December 2011 and core recovery was exceptional. All assay results have been obtained.
Among the 20 holes, 18 of them intersected multiple quartz stockwork, quartz-breccia veins or quartz veinlet zones. Drill holes intercepted 87 quartz zones; 86% of the quartz zones included silver and gold with > 0.2 ppm and > 0.005 ppm, respectively. Anomalous silver and gold exist in 15 holes. Stockwork zones are widespread and usually 5 to 12+ m in width. Thicker quartz veinlets and stockwork zones range from 21 to 54 m. LB-22 hole returned the highest gold intercept with 4.38 gpt gold and 11.6 gpt silver from 179.5 to 181.0 m, and hole LB-23 returned the highest silver intercept with 249 gpt silver and 0.481 gpt gold from 116.5 to 118.0 m. Major base metals are absent.
Significant structures and anomalous silver and gold with major intercepts have been confirmed through the drilling campaign. The large quantity of quartz veinlets, quartz stockwork and quartz breccia veins with regular intercepts of anomalous and detectable silver and gold with low base metals indicate that drilling till date remains high in the mineralized system. Additionally, anomalous zones in both target regions require deeper offset drilling.
Source: http://www.lincolnmining.com/