Ammaroo Phosphate (RUM 100%)
The Ammaroo Phosphate project is located on the Sandover Highway 350km north east of Alice Springs and 80-180km east of Barrow Creek. Rum Jungle Resources' Exploration Licences are in the highly prospective western side of the Georgina Basin. This basin contains the largest phosphate deposits in Australia. Phosphate exploration is being conducted under terms of an exploration agreement signed with the Central Land Council and Traditional Owners. Rum Jungle Resources became operator of the project in 2010 and found immediate success with the discovery of the Barrow Creek 1 and Ammaroo 1 phosphate prospects.
BARROW CREEK 1 RESOURCE
A revised Resource estimate for Barrow Creek 1 phosphate deposit was announced 05/12/2011.
At a 10% P2O5 cut-off, the total resource (Inferred and Indicated) is 253 Million Tonnes at an average grade of 15% P2O5.
At a 15% P2O5 cut-off, the total resource (Inferred and Indicated) is 97 Million Tonnes at an average grade of 18% P2O5.
The upgraded resource was estimated by MPR Geological Consultants Pty Ltd in accordance with the Joint Ore Reserves Committee Code using data from 843 RC drill holes and 32 diamond drill holes for a total of 25,428 m. Indicated resources include areas drilled at 100 m spacing or closer. Inferred resources are drilled at 200 m and 400 m spacing.
The estimates cover an area of 6.8 km east-west by 5.1 km north-south. The average thickness of the deposit is 5.9 m with an average depth to the top of mineralisation of 24 m. The density of the deposit has been estimated at 1.7 t/bcm based on immersion density measurements from costean samples and diamond core samples.
|
Cut off P2O5 |
Resource Category |
Million Tonnes |
P2O5 % |
AL2O3 % |
CaO % |
Fe2O3 % |
K2O % |
MgO % |
MnO % |
Na2O % |
SiO2 % |
TiO2 % |
U3O8 ppm |
|
|
Indicated |
13 |
16.4 |
6.6 |
22 |
2.1 |
0.8 |
0.61 |
0.1 |
0.15 |
47 |
0.3 |
24 |
|
10% |
Inferred |
240 |
15 |
7.2 |
20 |
6 |
1.4 |
0.7 |
0.2 |
0.2 |
44 |
0.4 |
22 |
|
Total |
253 |
15 |
7.2 |
20 |
5.8 |
1.4 |
0.7 |
0.2 |
0.2 |
44 |
0.4 |
22 |
|
|
Indicated |
7.3 |
19.2 |
5.9 |
26 |
2.1 |
0.8 |
0.58 |
0.11 |
0.15 |
41 |
0.3 |
24 |
|
|
15% |
Inferred |
90 |
18 |
6.6 |
24 |
4.8 |
1.1 |
0.7 |
0.2 |
0.2 |
39 |
0.4 |
25 |
|
Total |
97 |
18 |
6.5 |
24 |
4.6 |
1.1 |
0.7 |
0.2 |
0.2 |
39 |
0.4 |
25 |
|
|
Indicated |
2.4 |
23.2 |
4.9 |
31 |
2.1 |
0.6 |
0.51 |
0.14 |
0.14 |
33 |
0.2 |
25 |
|
|
20% |
Inferred |
0.2 |
23 |
5.4 |
31 |
2.1 |
0.5 |
0.6 |
0.1 |
0.1 |
32 |
0.2 |
30 |
|
Total |
2.6 |
23.2 |
4.9 |
31 |
2.1 |
0.6 |
0.52 |
0.14 |
0.14 |
33 |
0.2 |
25 |
|
|
Indicated |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
|
|
27% |
Inferred |
1.2 |
30 |
3.5 |
40 |
2 |
0.4 |
0.4 |
0.2 |
0.1 |
20 |
0.2 |
27 |
|
Total |
1.2 |
30 |
3.5 |
40 |
2 |
0.4 |
0.4 |
0.2 |
0.1 |
20 |
0.2 |
27 |
Table 1. Barrow Creek 1 resource estimate December 2011 (rounding errors apparent)
Last updated: 05/12/2011