NI43-101Pre-Feasibility Study Report - page 163

Rare Element Resources
Bear Lodge Project
Canadian NI 43-101 Technical Report
October 9
, 2014
10135-200-46 – Rev. 0
11.3.8 2012-2013 Assaying
Pulps were prepared by Minerals Exploration Geochemistry of Reno, Nevada from
the 2012-2013 drill core samples and sent to Activation Laboratories of Ancaster,
Ontario, Canada for assay, with sets of standards, blanks, and duplicates were
inserted to monitor analytical quality. The samples were analyzed for REE, Au, Ag,
As, Ba, Be, Bi, Co, Cr, Cs, Cu, Ga, Ge, Hf, In, Mo, Nb, Ni, Pb, Rb, Sb, Sc, Sn, Sr, Ta,
Th, Tl, U, V, W, Zn, Zr and major oxides. The REE include La, Ce, Pr, Nd, Sm, Eu,
Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y. The major oxides include SiO2, Al2O3,
Fe2O3(T), MnO, MgO, CaO, Na2O, K2O, TiO2, P2O5, and LOI. The REE and multi-
element geochemical package were analyzed using lithium metaborate fusion with an
ICP/MS finish (ActLabs code 8-REE). Gold was analyzed using a 30-gram fire assay
with atomic absorption finish (ActLabs code 1A2). Over limit REE assays were
completed as part of the 8-REE analytical package.
11.3.9 Laboratory Certifications
ALS and Activation Laboratories are both ISO 9001 accredited and operate to
standards consistent with ISO 17025 methods. Sample preparation laboratories do
not require certification; however, Rare Element conducts quality checks on the
preparation laboratory through the submittal of preparation duplicates to the analytical
laboratories and evaluation of the resultant data.
11.4 Rare Element’s Standards
Rare Element’s standards program was initiated in 2009 at the recommendation and
under the direction of Dr. Jeffrey Jaacks of Geochemical Applications International
Inc. Six standards were originally developed from drill rejects stored at Mountain
States Research and Development in Tucson, AZ (Standard series RE09001X
through RE09006X). Materials from oxide, transitional, and sulfide mineralization
types were prepared from drill intervals of like matrix material and grade. Additional
oxide reference materials were collected in the fall of 2010, and five additional
standards (Standard series RE09007X, RE10001X through RE10004X) were
prepared for a total of 11 REE standards for use in the drilling programs. The
RE09007X and RE10001X – RE10004X series standards were collected as bulk
samples from mineralized outcrop exposed by roads being developed for new drill
sites on the property. These materials were sent to MEG for preparation. All reference
materials were collected from REE mineralization on the Bear Lodge property in
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