VANCOUVER, Oct. 27 /PRNewswire/ - Luna Gold Corp. (TSXV-LGC) ("Luna" or the "Company") is pleased to provide an update on exploration activities at its Cachoeira gold project including results of extensive auger drilling and surface and underground channel sampling programs at the Tucano deposit. Highlights include:
Significant oxide mineralization defined via auger drilling at Tucano including:
- 15.00 meters @ 5.91 g/t Au in auger hole TX0094
- 15.00 meters @ 3.37 g/t Au in auger hole TX0154
- 15.00 meters @ 2.53 g/t Au in auger hole TX0134
High-grade quartz vein sets defined via Tucano underground channel sampling including:
- 6.85 meters @ 63.62 g/t Au in channel B L-50_4
- 16.59 meters @ 31.06 g/t Au in channel B L-60_2
- 15.70 meters @ 31.44 g/t Au in channel B L-69_2
Wide zones of gold mineralization defined via Tucano surface channel sampling including:
- 15.03 meters @ 3.53 g/t Au including 4.01 meters @ 6.40 g/t Au in channel OC-29
- 10.98 meters @ 3.11 g/t Au in channel OC-29A
- 18.02 meters @ 2.80 g/t Au including 9.00 meters @ 4.98 g/t Au in channel OC-35
Luna's President & CEO, John Blake, comments, "These results, combined with those previously drilled, are being incorporated into a maiden NI 43-101 resource estimate to be released in December 2010 for the Cachoeira Gold Project. Luna Gold will continue with exploration at Cachoeira and at Aurizona to pursue further resource development in the Company's highly prospective landholding in this mining friendly region of Brazil. "
Auger Drill Program
An auger drill program totaling 2,441 meters (2,675 individual samples including QA/QC) in 221 holes was conducted at the Tucano deposit to determine the extent of oxide gold mineralization and provide supplementary drill data for resource estimation purposes. Holes were drilled on a regular 50x25 meter section grid to 15 meters depth. In some cases planned depth was not achieved due to difficult ground conditions. Average hole depth for the program is 11 meters. The program has identified an extensive oxide mineralized zone over the Tucano deposit and many holes ended in mineralization. Select mineralized intervals are tabulated below.
|HOLE ID||HOLE DEPTH (m)||FROM (m)||TO (m)||INT (m)||AU (G/T)|
|TX0186||15.00||0.00 10.00||7.00 15.00||7.00 5.00||5.27 1.32|
Table 1. Top 10 mineralized auger drill intervals, Tucano deposit. All holes are vertical. All holes shown apart from TX0114 ended in mineralization. True widths to be established. A total of 221 holes were drilled. Assay values for auger holes not reported here range between below detection limit (<0.05 g/t Au) to 18.25 g/t Au.
Underground Channel Sampling Program
A channel sampling program was conducted in all accessible underground workings at Tucano. 360 meters of sampling (385 individual samples including QA/QC) was completed along and across quartz veins and cutting inter-vein host units in five separate workings. This program was conducted to improve understanding of structural controls on gold mineralization and to provide additional assay data on quartz vein sets and the host rock sequence. The program intersected high-grade gold values in smoky and white quartz vein sets consistent with both historic and recent Luna drill assay data. Geologic and structural mapping of these workings combined with the new assay data confirms the deposit model of stacked high-grade quartz veins hosted by mineralized volcanics. Significant mineralized intervals for quartz veins and mineralized wall rock are tabulated below.
|CHANNEL ID||LOCATION||VEIN/ WALLROCK||LITHOLOGY||TOTAL CHANNEL LENGTH (M)||FROM (M)||TO (M)||INT (M)||AU (G/T) UNCAPPED|
|C L+7_1||Wall||Wallrock||AQS||65.36||7.95 26.06 38.67||14.03 34.57 42.71||6.08 8.51 4.04||1.43 0.62 1.46|
|D L+11_1||Wall Wall Wall Wall||Vein-X Vein-X Vein-X Vein-X||QV QV SQV QV||47.58||14.19 24.34 29.89 40.16||18.69 26.42 34.21 42.35||4.50 2.08 4.32 2.19||7.08 7.88 62.22 16.16|
|AQS = Albite-Quartz-Sulfide altered wallrock Vein-X = Sample Cross-cutting (across) Vein SVQ = Smoky Quartz Vein Set Vein-L = Sample Longitudinal to (along) Vein QV = White/Light Gray Quartz Vein Set|
Table 2. Average gold grades of underground channel sampling, Tucano deposit. Mineralized intervals are reported. Channel samples were collected both paralleling and cross-cutting individual quartz veins and also in inter-vein areas. Assay intervals listed are composites. True widths to be established. A total of 360 metres of underground workings were sampled. Assay values for underground channels not reported here range between below detection limit (<0.05 g/t Au) to 41.10 g/t Au.
Surface Channel Sampling Program
A channel sampling program was conducted across all suitable surface outcrops at Tucano. 1,077 meters of sampling (1199 individual samples including QA/QC) was completed. Program objectives were the same as the underground program. Detailed mapping was conducted along the channels and data integrated into the deposit model. The program identified several zones of both low- and high-grade outcropping mineralization which assist in correlating surface and underground mineralized zones.
|CHANNEL ID||LITHOLOGY||VEINING||TOTAL CHANNEL LENGTH (M)||FROM (M)||TO (M)||INT (M)||AU (G/T) UNCAPPED|
|OC-21||AQS/Ser_Sch||VZ/QV||46.56 INCLUDING||29.45 32.48||36.49 34.49||7.04 2.01||7.44 19.75|
|OC-28||Ser_Sch||VZ/QV||73.67 INCLUDING||0.00 45.66 63.51||4.78 64.52 64.52||4.78 18.86 1.01||1.25 1.42 7.44|
|OC-29||AQS/Ser_Sch||VZ||15.03 INCLUDING||0.00 2.01||15.03 6.02||15.03 4.01||3.53 6.40|
|OC-30||Ser_Sch||QV||6.77 INCLUDING||0.00 0.96||6.77 1.94||6.77 0.98||1.33 4.20|
|OC-35||AQS||VZ||32.29 INCLUDING||0.00 0.00||18.02 9.00||18.02 9.00||2.80 4.98|
|Ser_Sch = Sericite Schist VZ - Zones of Sheeted Quartz Microveining AQS = Albite-Quartz-Sulfide Alteration STW = Zones of Quartz Stockwork QV = White/Light Gray Quartz Vein Set|
Table 3. Average gold grade of surface channel sampling, Tucano deposit. Mineralized intervals are reported. Assay intervals listed are composites. True widths to be established. A total of 1077 meters of underground workings were sampled. Assay values for surface channels not reported here range between below detection limit (<0.05 g/t Au) to 8.33 g/t Au.
Luna's VP Exploration, Titus Haggan, comments, "The 2010 exploration programs at the Tucano deposit are complete and work is well advanced on the NI 43-101 resource estimate and technical report. The results have considerably enhanced our understanding of the geology and structural controls on gold mineralization at Tucano. Exploration programs are also nearing completion at the Coruja and Arara targets and assay data will be released for these targets in due course."
Cachoeira is an advanced stage gold project in northeast Pará state, Brazil. Orogenic gold mineralization occurs within a 5 km long north trending shear zone. Three targets, Tucano, Coruja and Arara, have been defined to date. The Tucano deposit is located within the Cachoeira town urban limit.
About Luna Gold Corp
Luna is a gold mining and exploration company engaged in the exploration and development of gold deposits and advanced stage gold exploration projects in Brazil. The Company is currently commissioning its Aurizona gold mine in Maranhão, Brazil.
On behalf of the Board of Directors
LUNA GOLD CORP.
John Blake- President and CEO
NEITHER TSX VENTURE EXCHANGE NOR ITS REGULATION SERVICES PROVIDER (AS THAT TERM IS DEFINED IN THE POLICIES OF THE TSX VENTURE EXCHANGE) ACCEPTS RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THIS RELEASE.
Luna operates a rigorous QA/QC protocol on all aspects of geochemical sampling and analytical procedure. Auger drilling is conducted using Company owned motorized Honda auger drills. Auger drill teams are supervised by mining technicians. Auger samples are collected at continual 1 metre intervals using a 10.16 centimeter diameter collector. Sample weight averages 16 kilograms. All data including depth, sample number and geologic information are recorded on special log sheets. Channel sampling is supervised by geologists and mining technicians and recorded on special log sheets. All areas intended for sampling are assessed and marked-up for sampling by geologists. For surface channel sampling all sample faces are cleaned to a depth of 15 centimeters and marked for sampling which is conducted at nominal 1 meter intervals using appropriate sampling tools which are cleaned between each sample. For underground channel sampling all sample faces are washed using high pressure water hoses and marked for sampling which is conducted a nominal 1 meter intervals using electric rock saws which are cleaned between each sample. Sample intervals are surveyed using a Total Station. All auger and channel samples are stored in secure locked areas under Company supervision. Samples are transported from the Cachoeira project to the ALS Chemex sample preparation facility in Belo Horizonte, Minas Gerais accompanied by Luna personnel. Auger and channel samples are assayed for gold via fire assay (50 grams) at ALS Chemex, Lima, Peru. Luna operates a rigorous QA/QC program for auger and channel samples which involves the insertion of blanks, CRM and sample duplicates (channel only). These QA/QC procedures provide several measures of data quality and assure the Company that the assay data is representative of the original sample.
Titus Haggan Ph.D., EurGeol Certified Professional Geologist #746, Luna's VP Exploration is the Qualified Person as defined under National Instrument 43-101 responsible for the scientific and technical work on the exploration program and has supervised the preparation of and reviewed the technical disclosure in this press release. Non qualified persons currently work on Luna's exploration programs under the guidance of Titus Haggan. Dr Haggan takes responsibility for work, information and advice generated by non-Qualified persons and has taken the steps required to ensure that the work, information and advice is sound.
This news release does not constitute an offer to sell or a solicitation of an offer to sell any of the securities in the United States. The securities have not been and will not be registered under the United States Securities Act of 1933, as amended or any state securities laws and may not be offered or sold within the United States or to U.S. persons unless registered under the United States Securities Act of 1933 and applicable state securities laws or an exemption from such registration is available.
Statements in this release that are forward-looking statements are subject to various risks and uncertainties concerning the specific factors identified in Luna Gold Corp.'s periodic filings with Canadian Securities Regulators. Such forward-looking information represents management's best judgment based on information currently available. No forward-looking statement can be guaranteed and actual future results may vary materially. Luna Gold does not assume the obligation to update any forward-looking statement.
SOURCE Luna Gold Corp.