DESCRIPTION
GTS-2 is a gold tailings sample obtained from Placer Dome Canada Limited, South Porcupine, Ontario. It is intended to replace GTS-1, which is now depleted. GTS-1 was a composite of tailing from Placer Dome and the Macassa Division of Lac Minerals. The sample for GTS-2 was taken from the No. 5 Dam and shipped under water in two 45-gallon drums to CANMET for processing. The liquid from the bulk sample was decanted, and the remainder was dried on steam beds for 12 hours. Once dried, the material was passed through a jaw crusher to break up agglomerates. The resultant sample was screened directly, in batches, without further milling. The weight of -200-mesh material obtained was 611 kg. GTS-2 was blended according to a split-blending protocol, and bottled in 1497 400-g units. The ore at Placer Dome Canada's Dome Mine consists of gold in quartz and ankerite; pyrite and pyrrhotite are present to the extent of about 2.5%. The host rocks are intermediate greenstone, conglomerate, slate, and porphyry. The ore is treated with sodium cyanide, and the gangue is disposed of as tailings. The homogeneity of the stock with respect to its gold content was confirmed at CANMET using bottles chosen according to a stratified random sampling scheme. CERTIFICATION
Thirty-one industrial, commercial, and government laboratories participated in an interlaboratory certification program by providing gold analyses by methods of each laboratory's choice. Several laboratories also provided analyses for many other elements. A statistical analysis of the data yielded a certified value for gold and information values for twenty other constituents. Data for the remaining elements was either inadequate or inconclusive, but will be disclosed in the final report. CERTIFICATION HISTORY
GTS-2 was released in 1994. The 2008 version of the certificate has no technical additions or revisions. PERIOD OF VALIDITY
These certified values are valid until December 31, 2030. Updates will be published on the CCRMP web site. LEGAL NOTICE
The Canadian Certified Reference Materials Project has prepared this reference material and statistically evaluated the analytical data of the inter-laboratory certification program to the best of its ability. The purchaser, by receipt hereof, releases and indemnifies the Canadian Certified Reference Materials Project from and against all liability and costs arising out of the use of this material and information. |
