CIM Vancouver Branch June Webinar

The CIM Vancouver Branch is pleased to invite you to our June Webinar

 

Keynote Speaker: Peter Holbek Vice President, Exploration

Title: Webinar: Copper Mountain Mine: past, present and future.

Date: June 18th, 2020

Start Time: 11:00 AM PDT

 

REGISTER

 

Bio:

Mr. Holbek has 35 years of experience in mineral exploration and mine development. Prior to joining Copper Mountain Mining, he served as Vice President for Western Keltic Mines and Blackstone Ventures working on the discovery and development of VMS and Nickel deposits. Previously, he served as Vice President, Exploration for Atna Resources Ltd. Prior to that, he held the positions of Exploration Manager and Mine Geologist for Princeton Mining Ltd and Senior Exploration Geologist at Esso Minerals Canada and Homestake Canada Ltd. Mr. Holbek is Professional Geologist (P.Geo) and graduated from The University of British Columbia with a Bachelor of Science degree (hons) in Geology and a Master of Science degree in Economic Geology.

Abstract:

Copper Mountain is a copper-gold-silver alkalic porphyry deposit located near the town of Princeton in southern British Columbia. The mine has more than a 100-year history of exploration, development and mining. Production from 59 years of operation between 1927 and 2019 totals approximately 1,060 t Cu, 26t Au and 372t Ag from 270Mt of processed ore. Measured and Indicated Mineral Resources as of late 2019 were 599Mt at grades of 0.23% Cu, 0.10g/t Au and 0.73g/t Ag, using a 0.10% copper cut-off, for contained metal of 1,378t Cu, 60t Au, and 437t Ag. Mineralization is hosted within a probable rift developed in the early Jurassic magmatic-volcanic arc that forms the core of the southern Quesnel terrane. Unlike conventional calc-alkaline porphyry copper deposits that exhibit concentric zonation of mineralization and alteration, Copper Mountain mineralization is strongly fracture controlled in a mega-breccia of volcanic lithologies disaggregated within an intrusive cupola. Alteration facies are dominated by linear, overlapping, episodic, sodic-calcic and potassic assemblages. Argillic and propylitic alteration are either absent or minor. Zonation of copper sulphide minerals and precious metals reflect cooling of hydrothermal fluids and/or redox controls. Historical mining, both underground and later open-pit, was conducted on what were thought to be discrete deposits, however continued exploration indicates that all mineralization and alteration are part of a single, large hydrothermal system. Construction of the current Copper Mountain mine and mill complex was begun in early 2010 and production commenced in July of 2011 with a targeted production rate of 35kt/day. Initial difficulties with hard rock were overcome with the installation of a secondary crushing circuit in 2014. A series of continuous improvements in both mine and mill operations resulted in production increasing to the current rate of 45kt/day. From a global perspective, grades are relatively low, and stripping requirements high, which when combined with challenging topography requires extensive mine planning and good execution. Development of the gold-rich Ingerbelle deposit (~200Mt containing 550 t Cu and 1M oz Au) located across the Similkameen River from current operations is a key part of future production.

 

Note: If you have any questions or concern about this event please don’t hesitate to contact me at neda.mining@yahoo.com