*A colorful presentation by William (Bill) R Howard, Structurally Fine Concepts [email protected]
8 am Tuesday Sept. 10, 2019 Cardium room, Calgary Petroleum Club
Glacial deposits, soil, forest and much underbrush limit bedrock exposure in Canada. Most obvious mineral showings have been found. Public geologic maps used early for early-stage exploration are only fair guides, often out-of-date and inaccurate. Basic geophysical info is not used to map the rock formations. This situation gives opportunity.
Be informed about a proven technique that has discovered new mines and deposits valued at $billions in Canada. Heavy Mineral surveys recover silt and sand-size indicator mineral grains from glacial deposits, stream sediments and even rocks. They identify new mineral & gem occurrences ‘under cover’. The method works as most ore deposits have associated, characteristic Indicator minerals, or else the valuable commodities sought comprise the Heavy Minerals. Innovations continue to advance the technique.
Heavy Mineral surveys can discover gold, silver, copper, molybdenum, nickel, platinum group metals, tungsten, uranium, niobium-columbium, rare earth and other metallic deposits; also diamond and other precious gem deposits.
This talk reviews 5 surveys in B.C. NWT Ontario & New Brunswick. It shows field sampling and lab methods for preparing heavy mineral concentrates. How far away are the indicated mineralized sources?
Surprisingly corundum, natural aluminum oxide – sandpaper grit – is very abundant in one creek on one case study, CLY Project in south B.C. https://www.clyproject.com/ with “the highest concentration ever encountered… (in about 25,000 samples). It is common to find … up to 200 grains but not 8,000” Remy Huneault, Pres. ODM Ltd. (2015). A few grains are intense corn flower blue, pink-tan, and blue-fringed clear sapphires. Are some angular chips from larger crystals? One grain is barrel-shaped with two growth phases, a beautiful exotic. Why is this site also anomalous in gold, gold-pathfinder elements, and…? See other rare heavy minerals found, known in a handful of developed metal deposits.
Heavy Mineral surveys are a favored exploration tool as they simultaneously search for multiple commodities at low cost per area. Ore deposits usually give multiple signals from several minerals. Surveys may recover mm and smaller size grains of actual ‘pieces of ore’, or ore-related minerals from larger altered zones. Advanced work can typify mineral grains from possibly economic occurrences. Follow-up geophysics can confirm drill targets.
Advantageously, an indicated mineral source must be near surface – only meters deep. This is because the glacial cover / bedrock interface is sampled, where flowing ice with entrained rock eroded mineralization that was once exposed at the surface. The technique may detect large-scale dispersal trains to 1,000 km size, province wide.
How is the Geologic Survey of Canada spending your tax $?
Opportunities abound: New clusters of commercial, mineable deposits remain to be found ‘under cover’
*A breakfast buffet talk for the first 36 persons; Reserve by emailing William (Bill) R Howard [email protected]