|
At the Batu Hitam Prospect (meaning Black Rock in Bahasa Indonesian), Robust has drilled 41 drill holes for 4729 metres at August 2010 with a stike length of over 400m open in 3 directions. All holes to date have intersected anomalous gold and base metals, demonstrating an excellent track record of over 90%.
Latest Drilling Announcement.
Robust is also pleased to announce recently (September 2010) received assay results from drilling on the Batu Hitam prospect on Romang Island. Hole LWD085 was drilled under limestone cover in the northeast corner of the Batu Hitam prospect (see Figure 2 over leaf). This hole was mineralised for its entire 188m length, averaging over 1% combined zinc (Zn) + lead (Pb) + copper (Cu). Within this broad zone, LWD085 intersected a number of richer zones of mineralisation including the highest grade base metals (21.1% combined Pb + Zn + Cu) drilled at Lakuwahi over economically significant widths. Notably, the base metals mineralisation also contained elevated gold (1.27 g/t) and silver (58 g/t).
A summary of the results from hole LWD085 are below and more details can be located in Table 1.
• 188m at 1.1% combined Cu + Pb + Zn from surface including:
o 7m at 6.1% combined base metals from 22 metres; and
o 13m at 2.1% combined base metals from 78 metres; and
o 3m at 21.1% combined base metals (Pb 12.3% + Zn 7.7% + Cu 1.1%) with 1.27 g/t Au and 58 g/t Ag from 133m
Table 1.
Drill hole LWD093 was the first hole to be drilled using specific guidance from the new 3D IP - Resistivity modelling. Although assays are yet to be received from the laboratory, geological logging of the hole has registered a six-metre zone of massive sulphide mineralisation. This massive sulphide zone is part of a more extensive zone of mineralisation in this hole.
Batu Hitam New Results
Other Recent Drilling Highlights.
|
LWD 026 |
51 metres at 1.75 g/t Au Equivalent |
|
LWD 027 |
50 metres at 2.01 g/t Au Equivalent |
|
LWD 042 |
52 metres at 1.57 g/t Au Equivalent
41 metres at 2.70% Pb+Zn |
|
LWD 063 |
72 metres at 2.0% Zn+Pb+Cu
Incl. 26 metres at 3.1% Zn+Pb+Cu
and 9 metres at 4.4% Zn+Pb+Cu |
|
LWD 066 |
75 metres at 2.6% Zn+Pb+Cu
Incl. 2 metres at 21.9% Zn+Pb+Cu
|
|
Batu Hitam Drilling
Drilling at Batu Hitam continues with two owner operated rig on site targeting the follow up of the excellent intersection of 52 mts @ 1.57 g/t AU equivalent and 36 mts @ 3% combined Cu/Pb/Zn including 10 mts @ 4.65 combined CU/Pb/Zn at Hole LWD 042. In addition, Hole LWD 066 intersected altered and brecciated volcanic rocks for the entire length ending in mineralisation at 120 mts averaging 1.9% combined Cu/Pb/ZN.
Batu Hitam Gold-Silver Distribution
Batu Hitam Drill Section
Base Metals
Base metals at Batu Hitam represent an emerging opportunity with composite samples of various grades currently being tested metallurgically. Initial investigation suggests that mining would appear to be relatively easy and low-cost due to the soft rock and as the base metals are directly below the gold-silver mineralisation.
Batu Hitam Base Metals Distribution
IP Resistivity Survey
IP Resistivity Survey results over the main area of Batu Hitam are not yet available but the company believes that based on the Batu Mas results received in July 2010, these results will provide Robust will significant guidance for further drilling.
Lakuwahi IP-Resistivity survey
Hitam Geology and Drilling
Currently Being Updated
BATU HITAM DRILL RESULTS
| Hole # |
From (m) |
To (m) |
Au Equiv (g/t) |
Ag (g/t) |
Cu (%) |
Pb (%) |
Zn (%) |
| LWD026 |
0 |
72.25 |
2.44 |
.0 |
N/A |
N/A |
N/A |
|
0 |
49.75 |
3.93 |
25.0 |
N/A |
N/A |
N/A |
| LWD027 |
0 |
50.3 |
2.37 |
65.95 |
N/A |
N/A |
N/A |
|
1 |
18.25 |
3.12 |
.0 |
N/A |
N/A |
N/A |
|
2.2 |
13.2 |
2.54 |
.0 |
N/A |
N/A |
N/A |
|
22.25 |
26.35 |
2.48 |
500.25 |
N/A |
N/A |
N/A |
| LWD028 |
0 |
47.2 |
4.38 |
31.0 |
N/A |
.32 |
N/A |
|
3 |
32.2 |
.55 |
21.0 |
N/A |
.16 |
N/A |
|
5.2 |
10.2 |
2.44 |
46.0 |
N/A |
.34 |
N/A |
| LWD029 |
11.5 |
19.7 |
2.41 |
39.0 |
.01 |
N/A |
N/A |
| LWD030 |
0 |
23.2 |
.56 |
25.13 |
.02 |
N/A |
N/A |
|
27.2 |
31.2 |
6.78 |
9.5 |
1.11 |
N/A |
N/A |
| LWD031 |
14.75 |
46.75 |
9.36 |
27.26 |
.13 |
N/A |
N/A |
|
73.75 |
75.75 |
4.87 |
97.5 |
1.1 |
N/A |
N/A |
|
80.75 |
82.65 |
6.93 |
50.32 |
.12 |
N/A |
N/A |
| LWD032 |
1.5 |
26.4 |
5.61 |
17.87 |
.15 |
N/A |
N/A |
|
65.85 |
68.85 |
1.5 |
19.67 |
.95 |
N/A |
N/A |
| LWD033 |
17.2 |
36.7 |
2.92 |
6.65 |
N/A |
.39 |
.88 |
|
20.15 |
21.1 |
4.74 |
18.0 |
.26 |
.95 |
2.67 |
|
41.7 |
68.7 |
.29 |
1.63 |
N/A |
.48 |
.75 |
| LWD034 |
26.7 |
41.7 |
.45 |
4.8 |
.16 |
.5 |
1.09 |
|
35.7 |
36.7 |
1.0 |
22.0 |
1.13 |
2.6 |
1.51 |
|
38.7 |
39.7 |
.21 |
8.0 |
.1 |
1.35 |
4.03 |
| LWD035 |
0 |
46 |
.65 |
22.0 |
N/A |
.46 |
.22 |
|
26 |
27 |
1.59 |
21.0 |
N/A |
N/A |
N/A |
|
31 |
33 |
3.07 |
150.0 |
.81 |
N/A |
N/A |
|
44 |
45 |
3.72 |
89.0 |
.32 |
3.09 |
2.44 |
| LWD036 |
0 |
9.2 |
.99 |
157.35 |
.13 |
1.31 |
.18 |
|
0 |
4.7 |
1.48 |
291.0 |
N/A |
2.44 |
.07 |
|
3.2 |
4.7 |
.53 |
851.0 |
.2 |
5.4 |
.09 |
| LWD037 |
|
|
1.3 |
N/A |
N/A |
N/A |
N/A |
| LWD038 |
0 |
5.4 |
.46 |
N/A |
N/A |
1.21 |
.43 |
|
72.4 |
73.4 |
.24 |
N/A |
N/A |
.74 |
1.76 |
| LWD039 |
2.35 |
27.35 |
1.03 |
22.3 |
.23 |
.17 |
.17 |
|
2.35 |
15.35 |
1.73 |
5.38 |
N/A |
N/A |
N/A |
|
23.35 |
24.35 |
.31 |
15.0 |
4.66 |
.01 |
1.13 |
| LWD040 |
5 |
29.5 |
.74 |
50.2 |
N/A |
N/A |
N/A |
|
5 |
11 |
1.15 |
25.17 |
N/A |
N/A |
N/A |
|
18 |
27.5 |
.53 |
89.16 |
N/A |
N/A |
N/A |
| LWD041 |
12 |
14 |
1.89 |
7.5 |
N/A |
N/A |
N/A |
|
24.5 |
25.5 |
1.18 |
47.0 |
.71 |
N/A |
N/A |
|
36.5 |
39.5 |
.45 |
9.0 |
.13 |
.7 |
.8 |
| LWD042 |
3 |
55 |
.39 |
27.0 |
N/A |
.72 |
.62 |
|
3 |
21 |
1.71 |
12.0 |
N/A |
N/A |
N/A |
|
3 |
11 |
3.18 |
3.0 |
N/A |
N/A |
N/A |
|
33 |
69 |
3.39 |
28.5 |
.15 |
1.26 |
1.62 |
|
48 |
58 |
1.01 |
36.0 |
.17 |
1.7 |
2.7 |
| LWD043 |
|
|
1.19 |
N/A |
N/A |
N/A |
N/A |
| LWD044 |
26 |
57.5 |
3.83 |
39.0 |
N/A |
N/A |
N/A |
| LWD045 |
26.5 |
63.5 |
5.76 |
45.0 |
N/A |
N/A |
N/A |
| LWD047 |
7.5 |
11 |
4.47 |
20.0 |
N/A |
N/A |
N/A |
|
31.5 |
60.5 |
1.35 |
29.0 |
.1 |
.46 |
.58 |
|
51.5 |
74.5 |
1.54 |
20.0 |
.08 |
.6 |
1.36 |
| LWD050 |
8 |
39 |
.12 |
77.0 |
N/A |
.56 |
N/A |
| LWD052 |
|
|
5.13 |
N/A |
N/A |
N/A |
N/A |
| LWD053 |
6.5 |
8.5 |
11.97 |
N/A |
N/A |
.61 |
N/A |
|
16.5 |
18.5 |
3.76 |
8.0 |
N/A |
N/A |
N/A |
|
48.5 |
49.5 |
2.43 |
13.0 |
.31 |
1.24 |
.81 |
|
75.5 |
76.5 |
.46 |
41.0 |
.89 |
4.39 |
9.59 |
| LWD056 |
8 |
37 |
1.11 |
22.0 |
.12 |
.3 |
N/A |
|
8 |
19 |
1.46 |
26.0 |
N/A |
.51 |
N/A |
|
5 |
7 |
N/A |
N/A |
.01 |
4.75 |
.15 |
| LWD059 |
3 |
7.5 |
.46 |
.0 |
.08 |
1.96 |
.74 |
|
19 |
20 |
6.94 |
413.0 |
.13 |
.01 |
.0 |
|
50.5 |
68.5 |
.6 |
19.0 |
.11 |
.7 |
2.03 |
|
56.5 |
64.5 |
.78 |
28.0 |
.16 |
1.02 |
2.74 |
| LWD063 |
0 |
3.2 |
.51 |
.0 |
.17 |
4.57 |
.32 |
|
8 |
17.5 |
1.72 |
75.0 |
N/A |
N/A |
N/A |
|
19.5 |
91.5 |
.51 |
17.0 |
.12 |
.57 |
1.32 |
|
31.5 |
57.5 |
.6 |
21.0 |
.14 |
.78 |
2.16 |
|
41.5 |
50.5 |
.84 |
33.0 |
.29 |
1.13 |
2.92 |
| LWD066 |
0 |
3.5 |
.29 |
1.43 |
.09 |
1.4 |
.27 |
|
8.5 |
20.5 |
1.79 |
81.33 |
N/A |
N/A |
N/A |
|
31.5 |
106 |
.46 |
14.69 |
.13 |
.89 |
1.61 |
|
31.5 |
43.5 |
.73 |
30.74 |
.15 |
1.09 |
2.19 |
|
101.85 |
104 |
1.32 |
55.23 |
1.75 |
7.3 |
12.84 |
| LWD067 |
0 |
1 |
N/A |
N/A |
.08 |
3.86 |
.07 |
|
55.5 |
110 |
.47 |
14.14 |
.09 |
.78 |
1.11 |
| LWD070 |
21 |
69 |
1.2 |
33.86 |
N/A |
N/A |
N/A |
|
26 |
41 |
1.36 |
20.87 |
N/A |
N/A |
N/A |
|
62 |
136 |
.78 |
28.76 |
.11 |
.76 |
.72 |
|
103 |
118 |
.68 |
20.27 |
.09 |
.89 |
1.53 |
| LWD073 |
|
|
N/A |
N/A |
N/A |
N/A |
N/A |
| LWD077 |
1 |
9 |
.84 |
20.38 |
N/A |
N/A |
N/A |
|
77 |
82 |
.39 |
2.6 |
.06 |
.85 |
1.08 |
|
104 |
106 |
.39 |
4.5 |
.29 |
1.63 |
.8 |
| LWD080 |
20 |
22 |
1.18 |
46.0 |
N/A |
N/A |
N/A |
|
0 |
12 |
.14 |
1.0 |
.09 |
1.44 |
.33 |
|
52 |
116 |
.38 |
13.89 |
.11 |
.79 |
.73 |
|
57 |
59 |
1.22 |
55.0 |
.51 |
2.03 |
2.28 |
|
76 |
85 |
.52 |
18.78 |
.08 |
1.47 |
1.19 |
| LWD082 |
0 |
115 |
.18 |
5.47 |
.05 |
.78 |
.63 |
|
21 |
33 |
.05 |
1.45 |
.15 |
3.76 |
1.09 |
|
23.7 |
28.5 |
.08 |
3.63 |
.26 |
6.31 |
1.57 |
|
96 |
98 |
1.57 |
10.5 |
.03 |
1.09 |
.64 |
| LWD085 |
0 |
188 |
.19 |
3.35 |
.06 |
.51 |
.5 |
|
22 |
29 |
.06 |
.0 |
.19 |
3.35 |
2.53 |
|
78 |
91 |
.38 |
12.46 |
.1 |
.69 |
1.34 |
|
133 |
136 |
2.24 |
58.0 |
1.13 |
7.67 |
12.33 |
CONTENT IS CURRENTLY BEING UPDATED PLEASE COME BACK SOON.
Notes:
It is the opinion of Robust Resources Ltd that all of the minerals included in the metal equivalents calculations set out therein have a reasonable potential to be recovered. For further reference please see the metallurgical recovery test work results released in announcements to ASX on the 3rd and 24th June 2009. The information in the investor presentations, announcements and this web site that relates to Exploration Results, Mineral Resources or Ore Reserves is based on reports complied by Warrick Clent BSc, who is a Member of The Australasian Institute of Mining and Metallurgy and who has more than ten years experience in the field of activity being reported on. Mr Clent is an employee of the Company. Mr Clent has sufficient experience, which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2004 Edition of ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’. Mr Clent consents to the inclusion in the presentation of the matters based on his information in the form and context in which it appears.
† Gold Equivalent = gold assay + (silver assay / 60). Where the number 60 represents the ratio where 60 g/t Ag = 1g/t Au. This ratio was calculated from the five year average prices of gold and silver prices from 2004 to 14th January 2010 London market PM fix. (average Gold price is USD $657.47 and average Silver price is USD $11.19)
|
