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TitreVermiculite resources of British Columbia, Canada: geology, market review and economic potential
AuteurSimandl, G J; Paradis, S; Simandl, L; Dahrouge, J
SourceBritish Columbia Geological Survey, Geofile no. 2010-3, 2010, 1 feuille
LiensOnline - En direct (31 MB)
Année2010
Séries alt.Secteur des sciences de la Terre, Contribution externe 20100107
Documentpublication en série
Lang.anglais
Mediaen ligne; numérique
Formatspdf
ProvinceColombie-Britannique
SNRC83D/06
Lat/Long OENS-119.1667 -119.0833 52.3333 52.2500
Sujetsgisements minéraux; gîtes minéralogiques; minéralisation; vermiculite; dérivé; minéraux industriels; géologie économique
Illustrationsphotographs
ProgrammeÉtude des gîtes des métaux rares, Initiative géoscientifique ciblée (IGC-4)
Résumé(disponible en anglais seulement)
Expanded vermiculite is used as a lightweight aggregate in concrete, an additive in a variety of acoustic, thermal and fire insulation products, in soil conditioning, as a fertilizer or insecticide carrier, and in absorbent packing, paints and sealants. It is also used in refractory gunning and castable mixes, in vermiculite dispersions and in replacing asbestos in brake linings, primarily for the automotive market.
There is currently no vermiculite produced within the province of British Columbia. Only four localities in the BC MINFILE list vermiculite as a commodity. High concentrations of vermiculite were encountered adjacent to the Hodgie Rare Earth Zone, previously discovered by Commerce Resources Inc. in the Blue River area. This occurrence has above average vermiculite and higher grade than other known vermiculite occurrences in the province. Reconnaissance-level field observations, in-house particle-size analyses and rudimentary laboratory scale exfoliation tests are encouraging. They indicate that detailed chemical and mineralogical studies are the next logical step in the assessment of this and other vermiculite occurrences in the Blue River area. Chemical analyses are required to establish the trace-element levels in the vermiculite-bearing material, to ensure that it does not contain elevated levels of environmentally sensitive substances. Mineralogical follow-up should establish the absence or presence of asbestiform particles. The presence of such particles would negatively impact the development of this vermiculite resource.
If the outcomes of the above-recommended tests justify more rigorous laboratory and field investigations, then these occurrences of the Blue River area have the potential to become significant commercial sources of vermiculite.
GEOSCAN ID285981