» Summary
Of the 42,343 ha comprising the Woodjam
North property only 10% has been explored by Fjordland
to date. Takomkane intrusives in Takla volcanics form
a contact halo producing multiple alkalic to sub-alkalic
gold-copper porphyry deposits. Grades of mineralized drill
intersections have a relatively high gold to copper ratio
with trace amounts of molybdenum similar to Northgate
Mineral's Kemess South and Kemess North deposits in northern
British Columbia (Kemess South – Original Resources (1998):
202 Mt @ 0.224% Cu, 0.63 g/t Au). The Kemess South Mine
produces approximately 300,000 ounces of gold and 75 million
pounds of copper per year. Further information about the
Kemess gold-copper porphyry deposits is available at www.northgateminerals.com.
Three open-ended zones of porphyry mineralization
have now been drill tested on the Woodjam property; namely
the Megabuck, Deerhorn and Takom Zones. Drilling
in each of the zones continue to support the property's
potential to host large bulk-mineable gold+copper deposits.
» Megabuck
Zone
The Megabuck Zone is located on the
flanks of a large IP chargeability high. A total of 17,236
metres of drilling in 67 holes have been drilled into
the Megabuck Zone from 1974 to the present.
Mineralization in the Megabuck Zone
occurs as a large, irregular and complex tabular-shaped
gold-copper mineralized zone approximately 175 metres
thick trending northeast and dipping approximately 45°
to the southeast. Drilling has extended mineralization
over 300 metres to a depth of over 400 metres.
Mineralization is consistent with a porphyry-type
goId-copper style of mineralization, occurring in a complex
pile of brecciated monzonite intrusives and potassic-sericitic
altered volcanics and subvolcanics. Although gold and
copper content of the volcanics is markedly less than
that of the monzonite, it still contains up to 1.85 g/t
gold. Gold-copper ratios are consistent at approximately
1g/t Au to 0.14% Cu.
The continuity of mineralization from drilling
to date suggests that the system has a strong likelihood
for continued expansion to the south and east and to depth.
Monzonite intrudes highly altered, fractured and brecciated
volcanics, containing numerous irregular monzonite lenses
and fragments.
Significant intersections include:
|
Hole No. |
Interval (m) |
% Cu |
Au g/t |
| 74-01 |
87.6 |
0.13 |
1.24 |
| 99-20 |
41.6 |
0.13 |
0.98 |
| 04-32 |
274.9 |
0.14 |
1.03 |
| 06-51 |
93.6 |
0.19 |
0.95 |
| 06-53 |
28.0 |
0.24 |
1.52 |
» Takom
Zone
The Takom Zone, located approximately
2.5 kilometres south of the Megabuck Zone, is defined
by large (~ 500m x 1500m) coincident IP chargeability
and copper geochemistry anomalies. The zone is underlain
by hard dark grey andesitic rocks of the Takla Group volcanics
composed of partly brecciated augite and feldspar porphyry
flows and volcaniclastics containing patchy chlorite and
argillic alteration, cut by quartz-carbonate veins. The
volcanics are intruded by granodiorites, biotite-quartz
diorites and monzodiorites likely related to the Takomkane
Batholith.
Drilling in the Takom Zone area is directed
at defining the geometry of the mineralized intrusion
intersected by previous drill holes, as well as step-out
holes to explore for new mineralized areas. Assay results
from previous drilling indicate a zone of high gold to
copper ratio mineralization, similar to the Megabuck and
Deerhorn Zones to the north, following a northeasterly
trending positive magnetic feature.
Significant drill results from the Takom
Zone follow:
|
Hole No. |
Interval (m) |
% Cu |
Au g/t |
10-13 |
74.0 |
0.15 |
0.16 |
including |
26.0 |
0.20 |
0.30 |
10-12 |
148.0 |
0.26 |
0.40 |
including |
61.9 |
0.41 |
0.82 |
| 08-87 |
127.3 |
0.26 |
0.40 |
| including |
32.8 |
0.45 |
1.04 |
| 07-77 |
137.3 |
0.18 |
0.14 |
| including |
52.3 |
0.27 |
0.29 |
| 74-03 |
10.7 |
0.13 |
1.30 |
At this time the potential for copper-gold
mineralization is open laterally and to depth.
» Deerhorn
Zone
The Deerhorn Zone is located 1.5
kilometres northeast of the Megabuck Zone. The
zone is characterized by a chargeability high zone delineated
by the 2007 IP survey and a coincident magnetic high.
The best gold and copper-bearing zones are associated
with a monzonite porphyry intursion. To date, gold-copper
mineralization has been traced over a strike length of
approximately 700 m in an upper zone and a lower zone.
Drill results from significant holes drilled
to date in the Deerhorn Zone follow:
An interval containing 42.3 ppb Au and 0.90%
Cu over 15.4 metres, including a sub-interval of 340 ppb
Au and 7.2% Cu over 1.14 metres, was intersected in hole
03-30. This higher grading interval came from quartz-carbonate
veining and semi-massive chalcopyrite mineralization in
fractured, brecciated and altered volcanics.
Reconnaissance mapping and prospecting by Gold Fields during
2010 in the Tisdall Lake area, located at the northeastern
edge of the Woodjam North property, resulted in the discovery
of variable amounts of vein to disseminated chalcopyrite
showings in dioritic and gabbroic outcrop and float. Rock
samples collected assayed up to 0.3% Cu. The area is coincident
with a large magnetic high. Follow-up soil sampling and
reconnaissance induced polarization surveys (four lines
spaced 500 m apart totaling 14 line-km) over the area of
chalcopyrite showings and mag highs showed a broad area
(2 km by 1 km) of anomalous soils (Cu, Zn, As, Fe) and a
number of IP chargeability highs indicating a linear anomaly
of at least 1500 m in length. This discovery represents
a new target in the Woodjam district. Follow-up ground
magnetic surveys and drilling of selected targets is planned
for 2011.
* Note: Bruce Laird, PGeo was the project
geologist during the 2006 through 2010 drilling and John
Peters, PGeo is the QP who has reviewed the data presented.
