G-Resources updates Martabe mine resources, reserves statement
Friday, April 3 2015 - 03:16 AM WIB
Hong Kong-listed G-Resources Group Limited unveiled Thursday an update of the mineral resources and ore reserves statement for its Martabe gold and Silver mine in North Sumatra Province.
G-Resources said in a statement that the mineral resources as per December 31, 2014 is estimated at 190 million tons at 1.2 g/t gold, 11 g/t silver, for contained metal of 7.4 million ounces of gold and 70 million ounces of silver.
The mineral resources are provided in table 1 below, and are reported in accordance with the 2012 Edition of the Australasian Code for the Reporting of Exploration Results, Mineral Resources and Ore Reserves.
Table 1: Martabe Mineral Resources
| Deposit | Category | Tonnes | Gold grade | Silver grade | Contained metal | |
| (Mt) | (g/t Au) | (g/t Ag) | Gold (Moz) | Silver (Moz) | ||
| Purnama | Measured | 4.3 | 2.1 | 38 | 0.30 | 5.2 |
| Indicated | 61 | 1.6 | 19 | 3.1 | 37 | |
| Inferred | 29 | 1.0 | 12 | 0.88 | 11 | |
| Total | 93 | 1.4 | 18 | 4.2 | 53 | |
| Mine stockpiles | Measured | 2.5 | 1.1 | 10 | 0.09 | 0.75 |
| Total | 2.5 | 1.1 | 10 | 0.09 | 0.75 | |
| Ramba Joring | Measured | - | - | - | - | - |
| Indicated | 34 | 1.0 | 4 | 1.1 | 4.5 | |
| Inferred | 4.6 | 0.8 | 4 | 0.1 | 0.5 | |
| Total | 38 | 1.0 | 4 | 1.2 | 5.0 | |
| Barani | Measured | - | - | - | - | - |
| Indicated | 8.0 | 1.4 | 2.1 | 0.36 | 0.55 | |
| Inferred | 0.23 | 0.83 | 1.6 | 0.01 | 0.01 | |
| Total | 8.3 | 1.4 | 2.1 | 0.37 | 0.56 | |
| Tor Uluala | Measured | - | - | - | - | - |
| Indicated | - | - | - | - | - | |
| Inferred | 32 | 0.9 | 8 | 0.9 | 7.8 | |
| Total | 32 | 0.9 | 8 | 0.9 | 7.8 | |
| Horas | Measured | - | - | - | - | - |
| Indicated | - | - | - | - | - | |
| Inferred | 16 | 0.8 | 2 | 0.4 | 0.9 | |
| Total | 16 | 0.8 | 2 | 0.4 | 0.9 | |
| Uluala Hulu | Measured | - | - | - | - | - |
| Indicated | 1.6 | 2.2 | 19 | 0.11 | 0.98 | |
| Inferred | 2.9 | 0.76 | 2.9 | 0.07 | 0.27 | |
| Total | 4.5 | 1.2 | 8.6 | 0.18 | 1.3 | |
| Combined | Total | 190 | 1.2 | 11 | 7.4 | 70 |
Meanwhile, the total G-Resources ore reserves as per December 31, 2014 is 42.2 million tons at 2.0 g/t gold and 20 g/t silver for a total metal content of 2.68 million ounces of gold and 27.2 million ounces of silver.
The ore reserves estimate is provided in table 2 below, and is reported in accordance with the 2012 Edition of the Australasian Code for the Reporting of Exploration Results, Mineral Resources and Ore Reserves.
Table 2: Ore Reserves
| Deposit | Category | Tonnes
(mt) |
Gold
Grade (g/t Au) |
Silver
Grade (g/t Ag) |
Contained
Gold (koz) |
Metal
Silver (koz) |
| Purnama | Proved | 3.5 | 2.4 | 41 | 270 | 4,700 |
| Purnama
Barani |
Probable
Probable |
27.5
3.5 |
2.0
2.0 |
23
2.6 |
1,800
230 |
20,700
300 |
| Ramba Joring | Probable | 5.2 | 1.8 | 4.4 | 290 | 700 |
| Purnama stockpile | Proved | 2.5 | 1.1 | 9.5 | 90 | 750 |
| Total Ore Reserves | Probable & Proved | 42.2 | 2.0 | 20 | 2,680 | 27,200 |
Editing by Reiner Simanjuntak
