Rare Element Resources
Bear Lodge Project
Canadian NI 43-101 Technical Report
October 9
th
, 2014
10135-200-46 – Rev. 0
11-6
11.4.1 Method of Preparation
The standard materials were dried, crushed, pulverized, and then passed through a
150-mesh screen. The +150 material was discarded. The -150 material was mixed for
3 to 5 days in a ball mill with a 100 kilogram capacity. The material was rotary split
and packaged in 50-gram samples placed into Kraft bags.
11.4.2 Laboratories for Certification
The original standard samples were sent to the following laboratories for certification
analyses:
•
ALS Chemex, Vancouver, Canada
•
Activation Laboratories, Mississauga, Ontario
•
Mountain States R&D International, Vail, Arizona
•
Memorial University of Newfoundland
The second series of standards underwent additional round robin certification
analyses at:
•
SGS, Toronto
•
ACME Labs, Vancouver
•
Hazen Labs, Golden, Colorado
•
Genanalysis, Perth
•
UltraTrace, Perth
•
Inspectorate, Vancouver
ALS Chemex, Activation Laboratories, SGS, ACME Labs, Genanalysis, UltraTrace
and Inspectorate laboratories are all certified to ISO 9003 Standards. Mountain
States, Memorial University, and Hazen Labs are not certified to ISO 9003 Standards.
Ten replicate pulp samples were submitted to each laboratory for each standard. The
samples were randomized to blind the replicates to the analytical laboratory. Blanks
were also included with each standard set.
11.4.3 Analytical Methods for Certification
The original standard samples were analyzed using a 4-acid digestion or a lithium
metaborate fusion on 0.1 to 0.2 gram samples followed by ICP finish for Y, Ce, La, Pr,
Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu.
