European Metals Holdings Limited (ASX and AIM: EMH) have given DirectorsTalk the analytical results for a further two drillholes CIW-07 and CIW-08 at the Cinovec Lithium-Tin-Tungsten Project.
Key Points:
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· The two drillholes are collared near the historic main shaft. |
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· Significant lithium mineralization intersected from less than 10m depth in both holes, these are the shallowest intervals to-date. |
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· Drillhole CIW-07 returned a lithium-mineralized intercept of 226.7m @ 0.45% Li2O (inclusive of a 6.6m below cut-off un-altered granite), from 35m. |
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· Drillhole CIW-08 returned a mineralized intercept of 246.3m averaging 0.40%Li2O from 10.7m, containing high grade intervals of 6m@0.78%Li2O (126-132m) and 4m@0.88%Li2O (147-151m). |
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· Significant tin and tungsten mineralization was intersected in upper part of both drillholes: |
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o Drillhole CIW-07 – 12.5m@0.19%Sn and 0.028%W, 3.05m@0.17%Sn and 0.077%W, 1.45m@0.83%Sn and 0.124%W, 5m@0.17%Sn and 0.001%W and 2m@0.112%W and 0.04%Sn |
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o Drillhole CIW-08 – 4m@0.76%Sn and 0.081%W, 6m@0.38%Sn and 0.030%W, 4m@0.19%Sn and 0.003%W and 2m@0.79%Sn and 0.095%W |
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· Drilling continues in the western part of the Cinovec deposit (targeting high grade zones near the rhyolite/granite contact) and in the central part (targeting near-surface mineralization on the flanks of the historic underground mine). Altogether, nine drillholes have been competed this year (3,222m) with three other underway at this time. |
European Metals CEO Keith Coughlan said “We are very pleased with the results for the latest two neighboring drillholes, located in the uppermost part of the Cinovec deposit near the historic mine shaft. The shallow lithium intercepts that extend significantly beyond historical workings, combined with the substantive tin and tungsten grades auger well for the economics of the deposit in this area. We are very pleased to see the tin price back above USD 21,000/t. This enhances the economics of Cinovec significantly and provides us with great flexibility with regards to the development of the project. Cinovec is not only the largest lithium resource in Europe, it also contains one of the largest undeveloped tin resources in the world.”
Drill Programme
The drillholes CIW-07 and CIW-08 are located in the central part of the Cinovec, near the Central Shaft where high grade tin and tungsten veins were mined in the past. The current drill programme at Cinovec Main has been planned to confirm and delineate near surface lithium and tin mineralisation that would provide initial feed to the mill. Other goals are the conversion of resources from the Inferred to Indicated category, and delivery of material for metallurgical testing. So far, nine diamond core holes have been completed, and three are underway. Visual inspection and logging indicates that the geology in these holes is as expected. Drill details are listed in Table 1 below.
After geological logging, drill core is cut in half with a diamond saw. Quarter core samples are selected (honouring geological boundaries) and dispatched to ALS (Romania) for preparation and assay; the 3/4 of the core is returned to the core box and stored securely on site. Samples are being prepared and analysed by ALS using ICP and XRF techniques following standard industry practice for lithium and tin deposits. Strict QAQC protocols are observed, including the insertion of a Li standard in random fashion for every 10 core samples.
Table 1 – Completed drillholes, Cinovec Main
|
Hole ID |
North |
East |
Elevation (m) |
Depth (m) |
Azimuth |
Dip |
Comments |
|
CIW-11 |
-966097.5 1) |
-779299.5 1) |
867.4 |
444.4 |
40.1 |
-77.86 |
confirmation/infill |
|
CIW-20 |
-965638.0 1) |
-778810.5 1) |
837.5 |
257.6 |
336.7 |
-84.6 |
confirmation/infill |
|
CIW-19 |
-965692.1 1) |
-778810.8 1) |
837.8 |
271.5 |
332.1 |
-89.58 |
confirmation/infill |
|
CIW-08 |
-965800.2 1) |
-778791.4 1) |
837.6 |
274.9 |
156.85 |
-89.3 |
confirmation/infill |
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CIW-18 |
-966185.0 2) |
-779020.0 2) |
837.5 |
395.7 |
210.6 |
-89.05 |
confirmation/infill |
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CIW-13 |
-966126.8 1) |
-779175.5 1) |
862.8 |
429.3 |
76.0 |
-80.4 |
confirmation/infill |
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CIW-14 |
-966088.0 2) |
-779050.0 2) |
858 |
417.8 |
323.3 |
-89.07 |
confirmation/infill |
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CIW-07 |
-965847.0 2) |
-778867.0 2) |
841 |
300.0 |
0 3) |
-90 3) |
confirmation/infill |
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CIW-28 |
-965925.0 2) |
-779215.0 2) |
864.7 |
430.5 |
0 3) |
-90 3) |
confirmation/infill |
Hole locations are recorded in the local S-JTSK Krovak grid, 1)Coordinates surveyed, 2)Coordinates determined by GPS, 3)Planned, no inclinometry yet
Mineralized Intercepts and Lithology in CIW-07 and CIW-08
The drillholes CIW-07 and CIW-08 are collared in altered granite near the historic mine shaft. This geological domain is characterized by the presence of quartz veins flanked by relatively narrow li-mica veneers, hosted in variably altered (greisenized) and mineralized lithium granite. Most of the quartz veins were mined out in the past. The drillholes hit several open stopes after vein mining.
This geological domain has also a distinct geochemical signature in that the vein-hosting granite is continuously enriched in tin. So in CIW-07 the upper 184.2 meters average 0.058%Sn (median 254ppm), and 164.3m@0.066%Sn (median 210ppm) in CIW-20, respectively.
The vein system is underlain by greisenized granite and greisen intervals well mineralized in lithium.
Table summarizing mineralised intercepts in CIW-07
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CIW-07 |
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From |
To |
Interval (m) |
Li2O (%) |
Sn (%) |
W (%) |
Note |
|
3.5 |
15 |
10.5 *) |
0.30 |
|
|
|
|
35 |
157 |
117.7 *) |
0.40 |
|
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incl. 9.55m@0.75%Li2O (69.9-80.1m), |
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69.9 |
83.3 |
12.5 *) |
0.69 |
0.19 |
0.028 |
|
|
73.45 |
76.5 |
3.05 |
0.62 |
0.17 |
0.077 |
|
|
88.72 |
90.17 |
1.45 |
0.62 |
0.83 |
0.124 |
|
|
93.4 |
94.4 |
1 |
1.07 |
0.25 |
0.004 |
|
|
102 |
103 |
1 |
0.57 |
0.12 |
0.003 |
|
|
118 |
119 |
1 |
1.09 |
0.16 |
0.016 |
|
|
141 |
142 |
1 |
0.43 |
0.10 |
0.002 |
|
|
142 |
143 |
1 |
0.47 |
0.09 |
0.121 |
|
|
157 |
162 |
5 |
0.12 |
0.17 |
0.001 |
|
|
163.6 |
266 |
102.4 |
0.55 |
|
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incl. 5m@0.77%Li2O (173-178m), |
|
173 |
175 |
2 |
0.74 |
0.04 |
0.112 |
|
|
191 |
192 |
1 |
0.42 |
0.16 |
0.002 |
|
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Cut-off: 0.2%Li2O, 0.1%Sn, 0.05%W |
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Table summarizing mineralised intercepts in CIW-08.
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CIW-08 |
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From |
To |
Interval (m) |
Li2O (%) |
Sn (%) |
W (%) |
Note |
|
10.7 |
257 |
244.3 *) |
0.40 |
|
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incl. 4m@1.01%Li2O (126-130m), |
|
74 |
78 |
4 |
0.34 |
0.76 |
0.081 |
|
|
83 |
84 |
1 |
0.40 |
0.12 |
0.110 |
|
|
98 |
99 |
1 |
0.98 |
0.34 |
0.004 |
|
|
106 |
107 |
1 |
0.38 |
0.12 |
0.002 |
|
|
109 |
110 |
1 |
1.27 |
0.14 |
0.021 |
|
|
126 |
132 |
6 |
0.78 |
0.38 |
0.030 |
|
|
147 |
151 |
4 |
0.88 |
0.19 |
0.003 |
|
|
167 |
168 |
1 |
0.41 |
0.13 |
0.006 |
|
|
61 |
62 |
1 |
0.49 |
0.01 |
0.121 |
|
|
66 |
67 |
1 |
0.77 |
0.01 |
0.994 |
|
|
74 |
75 |
1 |
0.30 |
1.05 |
0.221 |
|
|
80 |
84 |
4 |
0.39 |
0.05 |
0.069 |
|
|
126 |
128 |
2 |
1.24 |
0.79 |
0.095 |
|
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Cut-off: 0.2%Li2O, 0.1%Sn, 0.05%W |
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