Diamonds / GTEN16
Geological Reports
The area is located some 55 kms southeast of Yellowknife,
NWT (see Figure 1). High Sense Geophysics on behalf of Avance
International Inc. originally flew the Gten-16 block in January
of 1995. The survey was flown using a line spacing of 100 meters
on north south lines. Flight lines were controlled using a differential
GPS system. Sensor height was 30 meters above ground.
Following this airborne survey, two ground magnetic surveys were
carried out in the area. This work has been described by Glen
MacDonald, P.Geo in a report written in August 2002.
The report shows the results of these two ground surveys but
does not give the UTM locations for the grids. The ground results
clearly show the presence of two anomalies.
As part of Snowfields agreement with Diamonds North all of the
Gten blocks were flown in 2003 with a helicopter-borne EM system.
This survey was performed using Meridian Geosciences' "Hummingbird"
Magnetic/Electromagnetic system.
This is a multi frequency in-phase and quadrature EM system utilizing
three coplanar and two coaxial coils. The coplanar frequencies
are 980, 6600 and 34000 Hz. The coaxial frequencies are 880 and
7000 Hz respectively.
The data covering this area was interpreted on a line-by-line
basis in profile form with reference to the magnetic contour plan.
All EM channels were examined.
The magnetic and electromagnetic data covering this area is shown
on the attached plan. This plan also shows the positions of the
interpreted anomalies. A list of these anomalies together with
their UTM positions and ratings is shown below in Table 1.
Target 1 (T-1) is located in the center of the area and is underlain
by a large lake. The EM response over the lake can be clearly
seen at the higher frequencies but more interestingly there is
a response from the lower frequencies.
An inversion of the data carried out by Meridian shows the general
area to exhibit a distinct low resistivity response.
This low resistivity feature would be typical of a conducting
kimberlite crater facies zone. However it is also typical of lake
bottom sediments.
In the Mud lake area some of the lakes sediments seem to be high
in magnetite and exhibit distinct magnetic signatures.
The main magnetic anomaly at T-1 (Gten-16) does however extend
beyond the edge of the lake.
Table 1
Gten -16 Target Locations
UTM
Easting
|
UTM
Northing
|
Rating
Out of 5 |
Name |
372615
|
6897167
|
4 |
T1 |
| 372291 |
6897056 |
4 |
T2 |
| 371322 |
6897013 |
4 |
T3 |
| 371327 |
6898317 |
3 |
T4 |
| 372626 |
6897534 |
4 |
T5 |
| 372024 |
6897288 |
3 |
T6 |
| 371756 |
6897110 |
3 |
T7 |
| 372026 |
6897747 |
3 |
T8 |
| 372199 |
6897809 |
3 |
T9 |
| 372909 |
6897110 |
2 |
T10 |
Target 2 (T-2) is to the west of T-1 and is also partially underlain
by a small lake. It also exhibits an EM response similar to T-1.
Target 3 (T-3) farther to the west is located at the western
edge of a large lake and also has a distinct EM signature. The
EM response however appears to be confined to the actual anomaly
and does not extend into the lake.
These three targets should be tested by drilling. The remaining
targets, especially Target 5 could also be tested if there are
sufficient funds.
Figure -1 - Location map
