Kirwan Tungsten Project

Siburan Resources Limited holds three granted permits – two Exploration Permits (EP) and Prospecting Permit (PP) in an area prospective for tungsten and gold in the South Island of New Zealand. The permit areas (Kirwan Hill Tungsten Project) are located 12km east of the township of Reefton, on the west coast of the South Island of New Zealand and cover a total area of 837km2. The project will be 100% owned by Siburan.

Historic work over the Kirwan Hill area has identified significant tungsten and gold mineralisation along the flanks of Kirwan Hill.  The project is located within the prospective NNW trending Shaw Drysdale Fracture Zone hosted in Greenland Group sediments. Siburan completed its initial diamond drill hole program in March 2013. The program was designed to test surface tungsten mineralisation which is spatially associated with a significant magnetic system. Drilling comprised of drill holes KHDD12_004 and KHDD13_005 – KHDD13_006 for a total of 758.8 metres (Table 1).

Drill hole

Easting NZTM

Northing NZTM

RL

Azimuth

Dip

Hole Depth

KHDD12_004

1518630

5338475

1076

90

-60

335.9

KHDD13_005

1519013.737

5339389.424

1175

270

-60

337.3

KHDD13_006

1519013.737

5339389.424

1175

270

-80

85.6

Table 1: Drill hole collar details

Figure 1: Drill Hole location Map

Significant tungsten drill hole intersections and surface geochemistry samples correlate spatially with a high magnetic susceptibility (Figure 2) .

 Figure 2: Anomalous surface geochemistry correlating with a zone of high magnetic susceptibility.

Tungsten mineralisation at Kirwan Hill occurs dominantly within quartz – scheelite veins and to a lesser extent in coarser sandstone units as disseminated scheelite. In drill holes KHDD13_005 and 006 tungsten trioxide grades (WO3) were significantly higher in the top 0 to 86.5 metres.

  • Complete results of KHDD13-005 have indicated a weighted average grade of 0.05% WO3from 0 – 337.3m.
    • Including, 0 – 50m @ 0.08% WO3
    •  0 – 100m @ 0.07% WO3 and
    • 0 -150m @ 0.06%

Complete results for KHDD13-006, drilled to 86.5m had assays of 0.09% from 0 – 86.5m. The results below in Table 2 are highlighting the significant intercepts of both KHDD13-005 and KHDD13-006.

KHDD13-005

 

KHDD13-006

WO3 (ppm)

From (m)

WO3 (ppm)

From (m)

9m @ 1078

0.00

9m @ 646

1.00

11m @ 1532

28.00

3m @ 992

13.00

10m @ 777

51.00

21m @ 1495

19.00

7m @ 764

75.00

3m @ 719

55.00

2.55m @ 838

104.00

7m @ 3318

64.00

6m @ 715

113.00

2m @ 5643

130.00

2m @ 2850

179.00

2m @ 4389

199.00

4.1m @ 1346

229.90

4m @ 902

253.00

3m @ 2005

261.00

3m @ 2295

268.00

3m @ 652

276.00

4.75m @ 4861

285.25

2m @ 665

295.00

 

Table 2: Significant Intercepts observed in KHDD13-005 and KHDD13-006.

Min grade 500ppm WO3
Max consecutive internal waste: 2m
No upper cut
W x 1.2611 = WO3  

Gold Potential

Siburan completed a rock chip sampling program over the Kirwan Reward Pit with significant gold values returned of 4.88 ppm and 5.11 ppm.  The pit is historically known for its peculiar loose auriferous quartz, contrasting with the lode mineralisation found in other Reefton areas. The Kirwan’s Reward Gold Mining Company was formed in 1898 to mine the loose boulders. A ten head battery, later enlarged to fifteen heads, was erected and connected to the open pit by aerial tramway. Mining continued until 1908. Production totalled 22,419 tonnes, yielding 341kg of gold.   Siburan has designed a diamond drill program to test the interpreted West North West trend of gold mineralisation at Kirwan’s Reward, 1km to the south west of the main tungsten anomalism. Historic rock chips have significant gold values including 31.9 g/t, 21.4g/t and 6.25g/t.