Focus Graphite drills 67.8 m of 21.1% Cgr at Lac Knife
FOCUS GRAPHITE ANNOUNCES SUCCESSFUL 2013 INFILL DRILLING PROGRAM AT THE LAC KNIFE GRAPHITE PROJECT
Focus Graphite Inc. has released very positive results of the summer 2013 infill drilling program on the company’s 100-per-cent-owned Lac Knife graphite property, located in the Grenville geological province of northeastern Quebec. Twenty-four large-diameter (PQ-sized) core holes totalling 2,081 metres were drilled with the objective of upgrading the current inferred and indicated mineral resource to the measured and indicated mineral resources categories. The drilling data are currently being uploaded to the resource model in order to update the resource estimate.
Hole LK-13-187 drilled on Line 500 S targeted the western zone of the south part of the deposit and returned one of the best graphitic carbon (Cgr) intersections of the program:
- Hole LK-13-187: 67.8 m grading 21.10 % Cgr (from 17.4 to 85.2 m)
All the drill holes (except LK-13-203) intercepted significant graphite intersections(i) along the strike length of the deposit as evidenced by the following holes from different parts of the deposit:
- Hole LK-13-209 drilled on section 425 S in central part of the deposit: 7.2 m grading 27.03% Cgr (from 21.5 to 28.7 m) and 25.3 m grading 30.94 % Cgr (from 38.2 to 63.5 m)
- Hole LK-13-201 drilled on section 250 S in northern part of the deposit: 34.7 m grading 19.34% Cgr (from 22.0 to 56.7 m)
(i) Significant intercepts are defined as Cgr greater than 5% over a minimum of 6 m; maximum internal dilution of 6 m; maximum external dilution of 0 m.
All 36 significant intercepts are summarized in Table 1. Location map of the drill holes is available on the Company’s website at www.focusgraphite.com.
Focus Graphite President and COO Don Baxter stated: “All infill drilling is now complete at Lac Knife. The results improve our current understanding of the limits and geometry of the resource and enable the interpretation of the geological model. Work on an upgrade of our mineral resource estimate to the Measured and Indicated categories is now underway. It will be used in the mineral reserve calculations and detailed mine design that form part of the Feasibility Study recently awarded to Met-Chem, Quebec.
“As the infill drilling areas overlap the areas that the representative sample was taken for the recent Pilot Plant, this indicates that the flake concentrate produced within the infill area should be of the same high quality that was produced by the Pilot Plant,” Mr. Baxter said. The pilot Plant demonstrated that the Lac Knife deposit yields a potentially economic distribution of large, medium and fine sized graphite flake at an average grade of 96.6% Ct (total carbon). All flake above 200 mesh is showing 98% Ct (see Focus Graphite press release dated August 21st 2013).
Table 1: Summary of significant graphitic carbon drill core intersections
(Cgr greater than 5% and minimum intersection of 6 m) from the 2013
infill drilling program at the Lac Knife property.
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Total Core
Length From To Length(ii) Cgr(iii) S
Hole Azimuth Dip (m) (m) (m) (m) (%) (%)
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LK-13-179 N074 -45 150 16.6 47.0 30.4 14.96 4.99
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58.2 75.4 17.2 20.02 4.51
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119.6 145.3 25.8 19.18 8.04
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LK-13-182 N081 -51 111 15.1 52.0 36.9 16.10 5.10
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59.5 82.6 23.1 21.25 4.01
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LK-13-185 N072 -45 150 9.4 58.0 48.6 19.76 5.00
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89.6 114.0 24.4 17.36 3.90
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LK-13-186 N080 -45 114 12.9 30.8 17.9 7.60 3.32
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61.2 111.5 50.4 12.19 4.20
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LK-13-187 N075 -47 90 17.4 85.2 67.8 21.10 5.99
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LK-13-190 N085 -46 90 11.5 75.9 64.4 13.36 5.33
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LK-13-191 N078 -45 111 13.4 36.5 23.1 19.37 6.20
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55.8 96.5 40.7 16.73 8.33
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LK-13-193 N081 -45 141 42.1 53.0 10.9 10.04 7.03
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97.0 129.3 32.3 14.88 8.31
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LK-13-194 N086 -45 43.5 23.8 38.2 14.4 17.18 8.29
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LK-13-195 N084 -45 55.5 18.0 30.8 12.8 15.62 5.82
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LK-13-196 N071 -45 111 63.8 85.8 22.0 7.03 3.16
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LK-13-197 N076 -45 81 5.9 12.1 6.2 20.47 3.64
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22.7 29.2 6.5 18.88 9.70
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47.7 57.0 9.3 10.32 5.64
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LK-13-198 N080 -48 51 5.5 27.6 22.1 16.85 8.38
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LK-13-199 N080 -48 30 6.3 17.8 11.6 7.08 3.69
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LK-13-200 N084 -45 51 13.0 21.1 8.2 17.41 7.88
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LK-13-201 N080 -45 70.5 22.0 56.7 34.7 19.34 7.33
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LK-13-202 N080 -45 91 53.5 87.4 34.0 17.02 8.82
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LK-13-207 N075 -45 48 19.8 41.8 22.0 21.31 9.52
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LK-13-208 N078 -45 40.5 13.8 36.1 22.3 21.87 8.84
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LK-13-209 N073 -55 130.5 21.5 28.7 7.2 27.03 4.31
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38.2 63.5 25.3 30.94 5.65
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LK-13-210 N076 -45 99 9.0 44.5 35.5 13.78 5.41
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70.7 95.8 25.1 22.77 7.28
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LK-13-211 N074 -45 70.5 10.3 31.8 21.5 16.63 3.34
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38.4 56.9 18.5 19.66 8.51
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LK-13-214 N088 -50 120 34.7 55.7 21.0 24.53 7.10
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68.3 103.4 35.1 18.11 9.25
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(ii) Significant Cgr intersections are expressed as core length because the
host rocks are highly metamorphosed and locally migmatized and folded.
However the drill holes cross-cuts the mineralization envelope interpreted
from the historical data and Focus' drill holes at a high angle.
(iii) All core sample carbon analyses performed by COREM and delivered as
graphitic carbon (Cgr), internal analytical code LSA-M-B10, LECO high
frequency combustion method with infrared measurement.
The mineralization at Lac Knife is hosted in biotite-quartz-feldspar paragneiss and schist of the Nault Formation, in association with iron formations of the Wabush Formation. These are equivalent to the lower Proterozoic Labrador Trough rocks affected by the late Proterozoic Grenvillian orogeny. High grade metamorphism and folding associated with the Grenvillian orogeny has resulted in the formation of important concentrations of graphite dominated by value-enhanced large flakes.
The Lac Knife property comprises 57 map-designated claims covering 2,986.31 ha located in Esmanville Township (NTS map sheet 23B/11), 27 km south-southwest of the iron-mining town of Fermont, in the Cote-Nord administrative district of Quebec. Focus acquired a 100% interest in the property in October 2010. A map showing the location of the Lac Knife property is available on the company’s website at www.focusgraphite.com.
2013 Infill Drilling Program
The summer 2013 infill drilling program at Lac Knife comprised 24 large diameter (PQ-sized, 4-inch) core holes for a total of 2,081m. Sixteen (16) holes were completed in different parts of the deposit, mostly in central and northeast parts, to complete the 25m-space coverage of drilling while eight (8) holes are twin holes of historical holes. The drilling program was designed to provide sufficient additional data and control on mineralisation to be useful to complete a new resource estimate. A contract has been awarded to AGP Mining Consultants of Barrie, Ontario to complete work on a new resource estimate. That work is currently underway.
The 2013 drilling campaign was managed by IOS Services Geoscientifiques (“IOS”) of Chicoutimi, Quebec. The infill drilling program started on July 6st and ended on August 10th 2013. The drilling was performed by Forage Rouillier of Amos, Quebec under the supervision of IOS.
Methodology and QA/QC
The entire drill cores were logged at the Lac Knife camp and shipped to the IOS facilities in Chicoutimi for sample preparation. Two slabs of about 1/4 of the 4 inch diameter PQ core were sawed parallel on each side of the central axis of the core. One of the slabs was earmarked for geochemical analysis while the other slab was kept as a witness sample. Center parts of the core are kept for possible subsequent uses. A total of 897 sub-sample slabs of the PQ drill core (mostly 1.5 m in length with variances from 0.5 m to 1.8 m) were collected from 23 holes. Slab samples were dried before processing for density measurement, crushing and grinding at the IOS sample preparation laboratory.
Once prepared, the samples were sent to the Consortium de Recherche Appliquee en Traitement et Transformation des Substances Minerales (“COREM”), an ISO/IEC 17025:2005 certified facility in Quebec-City, for graphitic carbon (Cgr) analysis using LECO high frequency combustion method with infrared measurement (internal analytical code LSA-M-B10 for graphitic carbon; ISO 9686:2004). For the measurement of graphitic carbon, the sample is pre-treated with nitric acid, placed in a LECO capsule and introduced in the furnace (1,380 degrees C) in an oxygen atmosphere. Carbon is oxidized to CO2. After the removal of moisture, gas (CO2) is measured by an infrared detector and a computerized system calculates the concentration of graphitic carbon (% Cgr). Total sulphur was also analyzed by LECO (code LSA-M-B41) (Table 1). For sulphur determinations, the sample is placed in a LECO capsule and introduced in the furnace (1,380 degrees C) until sulphur is oxidized to SO2. After the removal of moisture, gas (SO2) is measured by an infrared detector and a computerized system calculates the concentration of total sulphur (% S).
Under the QA/QC program, about 10% of the samples were analyzed by COREM for total (code LSA-M-B45), organic (code LSA-M-B58), inorganic (code LSA-M-B11) and graphitic (code LSA-M-B10) carbon as well as for total sulphur (a total of 85 core samples). Duplicates of the same 85 samples were also sent to ACTLABS Laboratories of Ancaster, Ontario (ISO/IEC 17025:2005 with CAN-P-1579) for graphitic carbon (code 5D – C Graphitic) and total sulphur (code 4F – S Combustion infrared detection) determinations and for 35 multi-element analysis using ICP methods (code 1E2 – Aqua Regia). IOS introduced 85 standards, 40 duplicates (sawing, crushing or grinding duplicates) and 83 blank samples into the batch of core sample as part of the QA/QC program.
2013 Exploration Drilling Program
For the summer 2013, an initial exploration drilling program was conducted outside of the deposit limits at the same time and immediately after the infill program on the Lac Knife property. A total of sixteen (16) core holes for a total of 2,208 m were completed from August 10th to 25th. A second drilling program was conducted on October 8th to 25th that included eight (8) holes for a total of 1,013 m. Both programs were designed to test geophysical anomalies identified during last fall’s ground magnetic and horizontal loop electromagnetic (HLEM) survey done by G.L. Geoservice Inc. and interpreted by Geophysique Camille St-Hilaire Inc., both located in Rouyn-Noranda. The two exploration drilling campaigns were also managed by IOS Services Geoscientifiques (“IOS”) of Chicoutimi, Quebec and drilled by Forage Rouillier of Amos, Quebec under the supervision of IOS. Most drill holes intercepted graphitic horizons. Results of assays are pending.
In parallel to the exploration and infill drilling, the company commissioned geotechnical drilling to gather data across the proposed building sites on the property. Geotechnical and hydrogeological data will be used to increase the accuracy of mine and infrastructure design.
The technical information presented in this news release has been reviewed by Benoit Lafrance, Ph.D., geo (Quebec), Focus Vice-President of Exploration and a Qualified Person under National Instrument (NI) 43-101 guidelines.
http://www.focusgraphite.com/news/press-releases
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