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Geology:
Pegmatitic
granitiod plug or sheet (about 1.3 km x 2.5
km) intrudes gneisses and schists (Monashee
Group) and quartz diorite.
Mineralization:
The
pegmatite is dominantly white feldspar (plagioclase
+ K-spar), grey quartz, some biotite and muscovite,
accessory garnet and rare tourmaline. Quartz
is an interstitial phase, or in graphic intergrowths.
Biotite is generally more common than muscovite,
micas are about 5% of total rock volume. Pegmatite
is apparently zoned with respect to feldspar
and quartz rich zones, and also possibly K-feldspar
and Na-Ca feldspar rich zones. Surface oxidation
not extensive. Whole rock analyses are typically
very similar to the Spruce Pine deposit in North
Carolina.
Work:
1988:
15 ddh (vertical & 61 m long) tested extent
of pegmatite in proposed mining area (about
250m x 200m). Other work included mapping, blast
pit and chip sampling, whole rock analyses,
and initial bench scale testing (benefication
of feldspar, quartz and mica concentrates through
grinding, flotation and magnetic separation).
Results:
Drilling
outlined 7.8 Mt of 90% pegmatite in core. Pegmatite
is typically 70% feldspar, 25% quartz, 5% micas.
Results of testing generally positive and production
of salable feldspar, quartz and mica concentrates
can be produced economically from the deposit.
The pegmatite ore yielded an average of 45%
feldspar concentrate, 20% quartz concentrate,
8% mica concentrate and 27% "waste rock"
7.8 million tonnes @ 90% pegmatite cut-off delineated
in area drilled (about 250m x 200m). Potential
for much larger tonnage (100 Mt plus).
Property
Details & Access:
1
claim, 450 hectares
14 km east of Lumby on paved Hwy. 6, good gravel
road onto claim, 4wd road/trail to drill sites
Detail
Location:
50o15'N 118o48'W, NTS
82L/2W,7W, Vernon M.D.
Other
Comments:
Good
infrastructure, power lines on property, 1 km
from highway, railhead
at Lumby .
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