Business
Crown Identifies High Grade Copper-Silver Drill Targets at Superior Copper Project
Toronto, Ontario--(Newsfile Corp. - August 11, 2020) - Crown Mining Corp. ( TSXV:   CWM) ...
About this update from Us Copper Corp
[{"type":"text","content":"Crown Identifies High Grade Copper-Silver Drill Targets at Superior Copper ProjectToronto, Ontario--(Newsfile Corp. - August 11, 2020) - Crown Mining Corp. (TSXV: CWM) (FSE: C73) (\"Crown\" or the \"Company\") is pleased to announce the results of a comprehensive review of historical exploration data on the Company's flagship Moonlight-Superior Copper Project in Plumas County, California. The review focused on the Superior copper deposit, with the objective of generating drill targets to assess the potential for well-developed high-grade vein and breccia hosted mineralization with silver and gold credits which could improve the overall scope of Moonlight-Superior Copper Project.HIGHLIGHTSContinuous rock chip-channel samples collected along ribs of underground workings at Superior defined high-grade copper and multi-ounce silver mineralization in broad breccia and vein like structures, including:SRW101-111 Zone: 34.1 feet @ 2.57% Cu and 42g/t AgSRW366-367 Zone: 6.2 feet @ 7.33% Cu and 109g/t AgSRW438-441 Zone: 8.5 feet @ 6.13% Cu, 0.07g/t Au and 137g/t AgSRW442-448 Zone: 21.7 feet @ 1.97% Cu and 28g/t AgHistoric drilling confirms discrete, but broad zones of high-grade copper mineralization, including: S1L-10 - 180 feet @ 0.93% Cu, Including 60 feet @ 1.31% Cu (EOH assayed 6ft @ 0.65% Cu)S1L-13 - 114 feet @ 1.46% Cu, Including 36 feet @ 2.27% Cu (EOH assayed 16ft @ 0.88% Cu)S1L-16 - 109 feet @ 1.31% Cu, Including 51 feet @ 2.04% Cu (EOH assayed 6ft @ 0.48% Cu)Several drill holes terminated in moderate to high grade copper mineralization. Previous explorers did not analyze drill core for gold, silver, or molybdenum.Grid soil assays define a copper in soil anomaly covering an area of 280-hectares using a threshold of 600ppm copper. Only 70 hectares have been drill-tested.There is a general lack of pyrite is in the hydrothermal system.KEY TAKEAWAYS & CONCLUSIONSBroad zones of higher-grade copper - silver and locally gold mineralization have been confirmed in at least ten veins and breccia zones.Less than 50% of the copper in soil anomaly has been drill tested at Superior.The general absence of pyrite is encouraging, as copper recovery is affected by the proportion and reactivity of pyrite in the ore, and pyrite is an acid forming mineral in waste rock.Exploration data review confirms significant potential to expand the...