TSX-V: RES & AMEX: REE
VANCOUVER, Nov. 9 /PRNewswire/ - Rare Element Resources
Ltd. (TSX-V: RES and AMEX: REE) is pleased to announce rare
earth element (REE) assay results from an additional eleven drill
holes completed during the ongoing 2010 core drilling program at
the Company's 100% owned Bear Lodge property, located in
northeastern Wyoming, USA (Figure
1). The results include those for nine drill holes in the Bull Hill
Southwest resource area, where an updated NI 43-101-compliant
resource was estimated earlier this year. Drilling results are also
reported from the first two holes drilled by the Company at the
Whitetail Ridge target area. The Whitetail Ridge results are marked
by potentially significant gold mineralization in addition to the
targeted REE mineralization. The objectives of the current drilling
program are to expand the Bull Hill SW oxide resource and upgrade
the resource category, and to explore for additional REE resources
at the Bull Hill NW, Whitetail Ridge, and other target areas.
Highlights of the drill program include the
following intercepts:
Bull Hill SW
Resource Area |
RES10-13 - |
8.5' @ 21.66% TREO (total rare earth oxide) |
|
10' @ 5.42%% TREO |
RES10-15 - |
13' @ 5.20% TREO |
RES10-16 - |
45' @ 5.12% TREO |
|
26' @ 4.66% TREO |
|
6.5' @ 6.69% TREO |
RES10-17 - |
11.5' @ 5.72% TREO |
|
10.5' @ 10.05% TREO |
|
10.5' @ 10.89% TREO |
|
40.5' @ 10.81% TREO |
RES10-18 - |
46' @ 7.47% TREO |
RES10-19 - |
58.5' @ 10.55% TREO |
|
|
Whitetail Ridge
Target Area |
RES10-20 - |
30' @ 4.72% TREO |
|
25' @ 4.54% TREO |
|
71.5' @ 4.05% TREO |
|
4' @ 9.20% TREO |
RES10-21 - |
40' @ 3.44% TREO |
|
6.5'' @ 7.10% TREO |
|
80' @ 959ppb Au |
Drilling Results
The host for all rare earth mineralization in
the Bear Lodge Mountains is a large alkaline igneous complex that
forms the core of the mountain range. Rare earth mineralization is
contained within carbonatite and their near-surface oxidized
equivalents (FMR). FMR refers to the major constituents of the
highly oxidized and leached, former carbonatite dikes that occur in
the depth range from the surface to 300-500 beneath the
surface-F (FeOx)-M (MnOx)-R (REE minerals). A
zone of partly oxidized carbonatite, termed transitional
carbonatite has variable thickness and occurs beneath the FMR zone
and above the deeper zone of unoxidized carbonatite.
REE assay values are reported by convention as
the combined oxide equivalents (REO) of the fifteen elements in the
lanthanide series + yttrium. The oxide equivalents are
approximately 15.6% higher than the combined metal assay values.
The Bear Lodge project contains predominantly the "light" REE
(lanthanum, cerium, praseodymium, and neodymium), and economically
important quantities of several of the "heavy" REE (europium,
dysprosium, and terbium). TREO refers to the Total of the REO in a
drill intercept.
Bull Hill SW Resource Area
REE mineralization in the Bull Hill SW resource
area is contained within dikes and stockwork of FMR, transitional
carbonatite, and carbonatite that invade heterolithic intrusive
breccia of the Bull Hill diatreme. Most of the REE mineralization
in the current set of holes occurs within FMR dikes and veins.
Six of the holes reported here were drilled
along a bearing of N45ºE, two of the holes were drilled on a
bearing of S45ºW, and one hole was drilled on a bearing of N90ºW
from a series of sites on a resource evaluation grid established
for the Bull Hill SW deposit in conjunction with Ore Reserves
Engineering, the Company's resource estimation consultant (Figure
1). The bearing, inclination, and significant assay intercepts from
the REE-mineralized sections for each of the drill holes are
summarized in Table 1 below.
Table 1. Summary of new REE-mineralized drill intercepts at
the Bull Hill SW Resource Area:
Drill hole RES10-11 (N45E, -45º; t.d. 550 feet)
Interval (feet) |
Intercept (feet) |
Est. true thickness
(feet) |
Mineralized lithology |
TREO (%) |
131-171 |
40 |
25 |
FMR stockwork |
2.11 |
271-331 |
60 |
45 |
FMR dikes and stockwork |
2.91 |
|
|
|
|
|
Drill Hole RES10-13 (S45W, -45º; t.d. 807 feet)
Interval
(feet) |
Intercept
(feet) |
Est. true thickness
(feet) |
Mineralized lithology |
TREO (%) |
79.5-88 |
8.5 |
7 |
FMR dike |
21.66 |
377-429 |
52 |
30 |
Transitional carbonatite dikes |
2.68 |
471-491 |
20 |
13 |
FMR and transitional carbonatite
dikes |
2.19 |
629-639 |
10 |
8 |
Transitional carbonatite dike |
5.42 |
704-721 |
17 |
15 |
Carbonatite dikes |
2.81 |
756-790.5 |
34.5 |
25 |
Carbonatite dikes |
3.16 |
Drill Hole RES10-14 (N45E, -45º; t.d. 522 feet)
Interval
(feet) |
Intercept
(feet) |
Est. true thickness
(feet) |
Mineralized lithology |
TREO (%) |
318-391 |
73 |
49 |
FMR dikes and stockwork |
2.00 |
Drill Hole RES10-15 (N45E, -70º; t.d. 773 feet)
Interval
(feet) |
Intercept
(feet) |
Est. true thickness
(feet) |
Mineralized lithology |
TREO (%) |
507-526.5 |
19.5 |
5 |
Transitional carbonatite
stockwork |
2.57 |
566.75-619.5 |
52.75 |
30 |
Carbonatite dikes |
2.79 |
Drill Hole RES10-16 (S45W, -45º; t.d. 603 feet)
Interval
(feet) |
Intercept
(feet) |
Est. true thickness
(feet) |
Mineralized lithology |
TREO (%) |
167-212 |
45 |
32 |
FMR dikes and stockwork |
5.12 |
245.5-279.5 |
34 |
30 |
FMR dikes |
3.62 |
354.5-380.5 |
26 |
17 |
Transitional carbonatite dikes |
4.66 |
426-432.5 |
6.5 |
3 |
FMR dike |
6.69 |
460-484 |
24 |
16 |
Transitional carbonatite dikes |
2.39 |
541-544.5 |
3.5 |
2.5 |
Transitional carbonatite dikes |
7.36 |
Drill Hole RES10-17 (N45E, -60º; t.d. 731 feet)
Interval
(feet) |
Intercept
(feet) |
Est. true thickness
(feet) |
Mineralized lithology |
TREO (%) |
36-55.5 |
19.5 |
10 |
FMR dikes |
2.76 |
155-166.5 |
11.5 |
5 |
FMR dike |
5.72 |
200.5-211 |
10.5 |
7.5 |
FMR dike |
10.05 |
243.75-254 |
10.25 |
10 |
FMR dike |
2.08 |
309-319.5 |
10.5 |
6 |
FMR dike |
10.89 |
480-520.5 |
40.5 |
30 |
FMR and transitional carbonatite
dike |
10.81 |
571-581 |
10 |
7.5 |
Carbonatite dikes |
2.07 |
Drill Hole RES10-18 (N45E, -45º; t.d. 457 feet)
Interval
(feet) |
Intercept
(feet) |
Est. true thickness
(feet) |
Mineralized lithology |
TREO (%) |
82-128 |
46 |
30 |
FMR dikes |
7.47 |
339-347 |
8 |
6 |
FMR stockwork |
2.48 |
Drill Hole RES10-19 (N45E, -70º; t.d. 647 feet)
Interval
(feet) |
Intercept
(feet) |
Est. true thickness
(feet) |
Mineralized lithology |
TREO (%) |
27-32.5 |
5.5 |
2.5 |
FMR dike |
2.43 |
331-389.5 |
58.5 |
29 |
FMR and transitional carbonatite
dike |
10.55 |
Drill Hole RES10-22 (N90W, -45º; t.d. 399 feet)
Interval
(feet) |
Intercept
(feet) |
Est. true thickness
(feet) |
Mineralized lithology |
TREO (%) |
108-133 |
25 |
18 |
FMR stockwork |
2.02 |
The drilling results show that the target FMR
and carbonatite bodies exhibit strong REE mineralization over a
strike length of more than 1,400 feet (426m). Detailed correlations
of drill intercepts suggest a structural bias toward vertical or
near vertical dips and a transitional change in strike from
northwesterly to almost due north in the northern part of the
resource area. Of the nine holes drilled on the Bull Hill SW
deposit, six are in-fill holes and three are step-off holes that
may contribute to additional resources.
Whitetail Ridge target
The Whitetail Ridge REE target area is located
approximately 1,500 feet northwest of the Bull Hill Southwest
deposit, adjacent to and west of the Bull Hill Northwest target. It
is marked by a zone of FMR stockwork and a coincident geophysical
anomaly. The size of the geophysical anomaly (approximately 1,400
by 2,000 feet elongate northeasterly) provides an indication that
the REE target may be larger than others in the district. Historic
hole WP-1, drilled within the Whitetail Ridge target area by Hecla
Mining Company in 1987, intersected 430 feet that averaged 2.44%
REO in a near- surface intercept from 0 to 430 feet. Within the
larger intercept were several 10-foot intercepts with grades
ranging from 5.5 to 13.7% REO. The holes drilled during the 2010
program were sited based on detailed geological mapping and a
ground geophysical survey (Figure 1). This is the same area
previously drilled with a number of holes by the U.S. Bureau of
Mines, which reported a potential large low-grade historic
resource. Initial drilling results are given in Table 2.
Table 2. Summary of initial REE-mineralized drill intercepts
at the Whitetail Ridge target area:
Drill Hole RES10-20 (S25W, -45º; t.d. 838 feet)
Interval
(feet) |
Intercept
(feet) |
Est. true thickness
(feet) |
Mineralized lithology |
TREO (%) |
10-40 |
30 |
18 |
FMR stockwork |
4.72 |
150-175 |
25 |
10 |
FMR dikes and stockwork |
4.54 |
200-271.5 |
71.5 |
36 |
FMR dikes and stockwork |
4.05 |
298-302 |
4 |
2.5 |
FMR dike |
9.20 |
340-389 |
49 |
25 |
FMR dikes |
2.98 |
770-780 |
10 |
10 |
FMR stockwork |
2.28 |
Drill Hole RES10-21 (N45E, -45º; t.d. 793 feet)
Interval
(feet) |
Intercept
(feet) |
Est. true thickness
(feet) |
Mineralized lithology |
TREO (%) |
110-150 |
40 |
25 |
FMR dikes and stockwork |
3.44 |
176.5-183 |
6.5 |
6 |
FMR dike |
7.10 |
220-230 |
10 |
5 |
FMR dikes and stockwork |
4.20 |
250-260.5 |
10.5 |
8.5 |
FMR stockwork |
2.90 |
Drill hole RES10-21 also contains a zone of
anomalous gold that is partly coincident with the FMR-hosted REE
mineralization (Table 3). The Company is evaluating this new target
signature. The partial coincidence between REE and gold
mineralization was first identified by Newmont's trench sampling in
the Whitetail Ridge area in 2009. Initial drilling at the Whitetail
Ridge target confirms its potential for economic REE
mineralization. The geological mapping and subsequent drilling
suggest that the mineralized bodies have both northwesterly and
east-northeasterly structural components. More drilling is
warranted to test the prospect and determine the orientation and
extent of the high-grade mineralization.
Table 3. Summary of gold-mineralized drill intercepts at the
Whitetail Ridge target area:
Drill Hole RES10-21 (N45E, -45º; t.d. 793 feet)
Interval
(feet) |
Intercept
(feet) |
Est. true thickness
(feet) |
Mineralized lithology |
Gold (ppb |
110-190 |
80 |
55 |
FMR, trachyte/phonolite, and
intrusive breccia |
959 |
Assaying and Quality Control
ALS Chemex conducted the assaying for the rare
earth elements in their Vancouver,
British Columbia assay facility. ALS Chemex Vancouver is
accredited to ISO 9001 and operates according to ALS Group
standards consistent with ISO 17025 methods at other laboratories.
The samples were prepared and digested with a lithium metaborate
fusion, followed by ICP analysis and a mass spectroscopy finish for
the rare earth element suite (ALS Method Me-81h). The samples were
analyzed for gold using a 30 gram fire assay digestion followed by
an ICP-AES finish (ALS Method Au-ICP21).
Analytical quality is monitored through the use
of randomly inserted quality control samples, including several
different standards with varying concentrations of rare earth
elements and gold, blanks, and duplicates, which are blinded to the
analytical laboratory. Results of the analyses at ALS Chemex are
evaluated continuously, and the results indicate acceptable
accuracy and precision. Blank analyses also indicated no issues
with carry-over contamination.
The Company's Vice President Jim Clark states: "We continue to receive
encouraging results from the Bull Hill SW resource area, and we
have confirmed the potential at our Whitetail Ridge target area.
The indications of strong gold mineralization at the Whitetail
Ridge prospect are particularly exciting, and we will be evaluating
that aspect of the project in more detail."
Rare Element Resources Ltd (TSX-V: RES: AMEX:
REE) is a publicly traded mineral resource
company focused on exploration and development of rare-earth
elements and gold on the Bear Lodge property.
Rare-earth elements are key components of the
green energy technologies and other high-technology applications.
Some of the major applications include hybrid automobiles, plug-in
electric automobiles, advanced wind turbines, computer hard drives,
compact fluorescent light bulbs, metal alloys, additives in
ceramics and glass, petroleum cracking catalysts, and a number of
critical military applications. China currently produces more than 95% of the
130,000 metric tonnes of rare-earths consumed annually worldwide,
and China has been reducing its
exports of rare earths each year. The rare-earth market is growing
rapidly, and is projected to accelerate if the green technologies
are implemented on a broad scale.
ON BEHALF OF THE BOARD
Donald E. Ranta, PhD, PGeo,
President & CEO
Donald E. Ranta, PhD, PGeo,
serves the Board of Directors of the Company as an internal,
technically Qualified Person. Technical information in this
news release has been reviewed by Dr. Ranta and has been prepared
in accordance with Canadian regulatory requirements that are set
out in National Instrument 43-101. This news release was
prepared by Company management, who take full responsibility for
content. Neither TSX Venture Exchange nor its Regulation Services
Provider (as that term is defined in the policies of the TSX
Venture Exchange) accepts responsibility for the adequacy or
accuracy of this release.
To view Figure 1, please visit:
http://files.newswire.ca/675/RareElementBullHill.doc
SOURCE Rare Element Resources Ltd.
Copyright v. 9 PR Newswire