Dia Bras is a Canadian exploration mining company focused on precious and base metals in Chihuahua State and other areas of northern Mexico.

Dia Bras Exploration Inc. reports that a major geophysical survey has been completed on its 100% owned Bolivar Property which is not subject to any royalties, Chihuahua State, Mexico. Field checks have been conducted to examine anomalies detected during a recently completed Titan 24 Induced Polarization (IP)/resistivity survey contracted to Quantec Geoscience of Toronto, Ontario.  Two areas were covered during the survey, where eight lines totaling 9,000 metres were measured across the Banda Fault near the Bolivar Mine, and three lines totaling 2,700 metres were measured at the La Cascada high-sulfidation gold deposit. Condor Consulting of Lakewood, Colorado, has been retained by Dia Bras to assist in the planning of the IP/resistivity surveys and with the interpretation of the results.

“The surveys just completed at La Cascada and the Banda Fault areas have shown very promising results that confirm important mineralization can occur in these areas,” stated Daniel Tellechea, President & CEO. “These very positive results focus our drilling on targets that have the potential to host very important mineralization. At La Cascada, our target is a multi-million ounce gold deposit, while at the Banda Fault area our target is a major, stratabound skarn or replacement deposit with copper-zinc grades equivalent to what we have been producing from the Bolivar Mine for the past five years.”

La Cascada

Three survey lines at La Cascada were completed in this area of rugged terrain: a 1,000-m-long N-S line and two E-W lines (800 and 900 m), which resulted in detection of three significant chargeability and resistivity anomalies – all of which are associated with anomalous grades of gold in outcrop, as evidenced by the results of chip-channel sampling over 2-metre widths. The southernmost anomaly on the N-S line starts at 50 m depth. Sampling of outcrops over an area of 50 x 85 m was conducted prior to the survey and the six samples assayed 0.6 – 1.1 g/t gold.

Sampling in the area of the central anomaly (also starting at 50 m depth), completed over a 40 x 50 m area (also prior to the survey) resulted in the eight samples assaying 0.5 – 2.1 g/t gold.

Sampling in the area of the northernmost anomaly, completed over a 10 x 20 m area (also prior to the survey) resulted in the three samples assaying 0.4 – 3.0 g/t gold.

The sampled areas between the anomalies yielded very low grades of gold, generally less than 0.1 g/t.

These survey results are very positive because of the strong correlation between elevated gold in outcrop and strong chargeability anomalies. This correlation indicates that the probability that the three chargeability anomalies are associated with gold mineralization at shallow depths is very high.

The truncation of the chargeability anomalies at an apparent constant 50 m depth is inferred to be the result of oxidation of the high-sulfide zones, remnants of which appear on the surface as 1-2% pyrite and abundant jarosite, hematite and goethite.

Drilling will target the near-surface, coincident strong chargeability (IP) and resistivity zones detected during the survey. Drilling is scheduled to commence during late August, when an access road is completed to the selected drill sites. At least ten holes of 200-300 m depth each are planned for this first phase of drilling.

The area surveyed is only about 10% of the area known to host strong gold anomalies, where sampling has returned values up to 15 g/t Au.

Banda Fault

Eight E-W lines 600 m to 1500 m in length at the Banda Fault area were measured across this major, NW-trending fault. The objective of the survey was to locate geophysical anomalies associated with NW-trending and NE-trending faults. Faults of these orientations control the location of high-grade copper-zinc mineralization in the Bolivar Mine. The anomalies can be separated into two general groups: near-surface anomalies and sub-surface anomalies.

Each of the near-surface anomalies occurs in andesite and is associated with elevated sulfide content, usually 1-3%, epidote and minor silicification. The anomalies are generally on low hills, reflecting their being underlain by the resistant silicified rock. The anomalies on lines 3, 5, 6 & 7 indicate a NW-trending structure (herein named the Nathalie Fault) parallel to the Banda Fault that passes near Increíble. There are significant geochemical anomalies associated with this structure, which may be a very important feeder of mineralizing fluids into the metasediments. This structure may be the main feeder of the mineralizing fluids, and not the Banda Fault as has been inferred prior to the survey.

The sub-surface anomalies are generally located west of the Banda Fault and are in a position to be the stratabound, large-tonnage replacement and/or skarn deposits that have been a major target for the Company.

The survey results are very encouraging. It has identified the Nathalie Fault, which is now inferred to be the major feeder for mineralization at the property. Drill hole 287, completed in March 2009, was drilled to a depth of 650 metres as a test of the Banda Fault and was placed between the Banda Fault and the Nathalie Fault. It was collared on what is now known to be the edges of a chargeability anomaly, a magnetic low and a moderate resistivity anomaly. The chargeability anomaly tops out at 100 m depth at the drill site, and at this depth, the hole entered increasingly skarnified andesite with disseminated sulfide mineralization. At 450 m depth, the hole entered the metasediments, which are present as marble and represent the upper portion of the metasedimentary section – above the Upper Skarn target. That is, the hole did not reach the target of the Upper Skarn horizon.

The new interpretation is that the Nathalie Fault, which is west of hole 287, will have on its west side the Upper Skarn target at a shallower depth, possibly 300-400 m. This area will be drilled by placing a NE-SW line of holes about 200 m NW of hole 287 and straddling the Nathalie Fault. This is an important target.

Northern Tiger Resources Inc.  announces that it has commenced a $2.6 million exploration program on its Yukon projects.

“The Yukon is continuing to gain attention as a great place to invest and explore, and we are excited to see our 2010 exploration program ramping up,” says Greg Hayes, President of Northern Tiger Resources.

Sonora Gulch
The Sonora Gulch project is 100% owned by Northern Tiger. As disclosed in a news release dated March 2, 2010, the property hosts a large gold geochemical anomaly covering approximately 9 square kilometres with gold-in-soil values ranging from trace to 2,340 ppb (average grade of 56 ppb over 1,971 samples). Contained within the broad gold anomaly is a 2 kilometre by 1 kilometre copper-molybdenum anomaly that the Company is evaluating as a copper-molybdenum porphyry system (see news release dated February 25, 2010).

A crew has been mobilized to the Company’s Sonora Gulch camp to begin line-cutting in preparation for a deep penetrating geophysical survey by Quantec Geosciences Ltd. (the “Titan 24 Survey“). The survey is scheduled for mid-June, and will measure direct current resistivity and induced polarization to depths up to 750 metres. The primary target for the Titan 24 Survey is copper-molybdenum porphyry mineralization.

Following completion of the Titan 24 Survey, Northern Tiger is planning 12 to 15 diamond drill holes (3,000 metres) on the Sonora Gulch property. The drill program is being planned to test the property’s porphyry potential as well as one or two of the high-priority gold targets contained within the broader 9 square kilometre gold-in-soil anomaly identified on the property. The drill program is anticipated to begin in late June.

Airborne magnetic of Sanora: http://www.northern-tiger.com/i/pdf/Airborne_Magnetics_Sonora_Gulch.pdf

Minto-style Targets
Northern Tiger acquired five properties from Capstone Mining Corp. (“Capstone”) covering exploration targets where previous prospecting encountered copper mineralization similar to that found at Capstone’s Minto Mine. In addition, Northern Tiger and Capstone have a Regional Exploration Alliance Agreement (through Capstone’s wholly owned subsidiary Minto Explorations Ltd.), which provides for input and cooperation on planning and executing exploration programs and long term strategies for the area, sharing of technical expertise to assist in exploration and project advancement, and access to Capstone’s infrastructure to facilitate area exploration.

Two diamond drill holes (500 metres) are planned to test a Gradient Array Induced Polarization anomaly coincident with a copper-in-soil geochemical anomaly located on the DAD property (see news release dated April 13, 2010). The distinct chargeability high anomaly is suggestive of disseminated sulphide mineralization. It is 350 metres wide on the eastern end and 200 metres wide on the western end. The anomaly is in excess of 300 metres long, and open to both the east and west. The DAD drill program is anticipated to occur in early September upon completion of the Sonora Gulch drilling.

A surface exploration program is planned to investigate a number of airborne geophysical targets identified on the MEL property, which is located immediately to the north of Capstone’s Minto Mine. Additional surface exploration work is also planned to follow up on targets identified on the DEL and LED properties. This work is expected to occur in June, and if results warrant, ground geophysics surveys will be conducted over specific targets later in the season.

Results of the 2D inversion of the IP using Null reference data along line L1 (on the top)

Results of the 2D inversion of the MT data along line L1 Boss area (on the bottom)

In this 2010 year the program Targeted Geoscience Initiative (TGI-3) is finishing. The Government of Canada committed $25M over five years to extend the mission of the Targeted Geoscience Initiative Program with a focus on base metal reserves in established mining communities. And through the TGI-3 program, additional petrophysical data will be added to the database for the TGI study areas (Southern B.C., Cantral Manitoba-Saskatchewan, Central Newfoundland, Abitibi, Ontario-Quebec, Bathurst, N.B.).

The National Rock Properties Database (NRPD) has been in development since 1998 and was initiated through a partnership between Noranda, Falconbridge, the Geological Survey of Canada, Quantec Geoscience Ltd, and Mira Geoscience Ltd. The result of the original development was a fairly complete data model and interface for the maintenance and query of rock property data collected using wireline geophysical methods. Through a partnership between McMaster University, MIRA Geoscience, and the GSC through the CAMIRO Project in 2004-05, the NRPD data model was extended to include rock property data measured on rock samples, definitions of universal lithology and alteration classifications for geological description.

The NRPD resides in an Oracle database. The database currently contains over 5 million rock property data records. Key parameters of each dataset include location coordinates, so that data can be queried by region, as well as geological attributes. The parameters currently available for query are Caliper, Conductivity, Density, Gamma, IP, Magnetic Susceptibility, Neutron porosity, Potassium, Resistivity, Self potential, Self potential gradient, Uranium, Temperature gradient, Temperature, Thorium and Acoustic velocity.

Source: http://ess.nrcan.gc.ca

it was a theme of Canadian Exploration Geophysical Society’s a timely and informative full-day symposium which took place yesterday in Toronto and timed to PDAC-2010. A roster of noted industry experts presented papers focussing on exploration and extraction of gold, silver, and platinum group metals. The symposium included an introductory overview of key geological aspects of important types of Au, Ag, and PGM deposits, cover particular geophysical surveys and applications, case studies, and look at promising future technologies.

The companies which made the presentations: Barrik Gold Exploration; SRK Consulting; MB Geosolutions; Condor Consulting; Fugro Airborne; Aeroquest Surveys with Teck REsources; Geotech Ltd.; Zonge Egineering with Terra Res.; Quantec Geoscience; JVX Ltd.; Abitibi Geophysics; SJ Geophysics Ltd.; Southern Geoscience Consultants; Levon Res with Coro Minera and Fritz Geophysics; Geophysical Algorithms; RMIT; Geoscience BC; GSC; University of Quebec; Ontario Geological Survey with PGW.

http://www.kegsonline.org/?dir=event&sub=&id=8002

Everyone can look at the results of Titan-24 survey over the Gold Project.

Maps direct link http://www.steliasmines.com/titan24/images.pdf and interpretation model sections http://steliasmines.com/titan24/titan2d_xsectionFigures.pdf

St. Elias Mines Ltd. is owner of the Tesoro Gold Property located in Peru.  The Property covers approximately 1,700ha and is located in the Acari District within the prolific Nazca-Ocoño gold belt of southwestern Peru.  The Nazca-Ocoño gold belt is a 300km x 30km belt paralleling the Pacific coast of southwestern Peru.  Gold is associated with disseminated sulfides that seeped into quartz veins or rock fractures within the intrusive body.  The continuity of the quartz veins and fractures is very impressive in the Nazca-Ocoño belt since these veins are often hosted within fractures and shears that show continuity along several kilometers.  To date, more than 70 gold deposits have been exploited in this region since as early as the 17th century.
The veins located immediately north of the Property are being mined by Dynacor (TSX-DYN) who published an inferred gold resource of 606,611 ounces at 16.4g/t (on only 3 of 10 veins discovered to date).  The veins located immediately south of the Property have been in continuous production since the 1970’s and have produced over 700,000 ounces to date.  These veins have been mined over a 2,000m strike length to a depth of 1,000m.  Barrick Gold has recently acquired claims that adjoin St. Elias’ Property to the south.

Since the Property acquisition in March 2004, the Company has completed a Phase I exploration program and a Phase II exploration program is ongoing.  Prior to these programs, the Property was primarily unexplored.

The Phase I program consisted of control grid emplacement, reconnaissance geological mapping and prospecting over the entire Property, detailed geological mapping and sampling of all identified veins, trenching and sampling of wider structures that flank the veins and underground sampling of the Canchete 1 vein.

Since the completion of the Phase I program, the Company has assessed and prioritized the five main concentrations of gold mineralization (“zones”), as well as, other gold bearing areas within the Property.

The Phase II exploration program is ongoing with initial exploration efforts focused on the Zona Canchete Vein #1 (“ZCV#1”).  The ZCV#1 is a first priority target and is one of eight gold-bearing quartz veins located at Zona Canchete.

The Phase II program consists of detailed geological mapping, sampling, development of additional underground workings and the collection and processing of an initial 150-200 tonne bulk sample at the ZCV#1.  This work will assist in determining the horizontal and vertical extent of the vein, as well as, the vein’s physical and gold grade characteristics.

Detailed sampling from the existing underground workings confirms that both the gold values and the vein width are getting stronger with depth.  On the 40m-level, the overall grade and continuity of the veins are improving with distance away from the winze both to the east and to the west.  For example, the average grade of the vein between 10.5m east and 22.6m east (a distance of 12.1m) is 3.0 oz/T gold.  The average grade of the vein between 20m west and 24m west is 1.36 oz/T gold over an average vein width of 31.6cm.

St. Elias Mines Ltd.  provides further information following the recently announced results from the Titan 24 Geophysical survey conducted by Quantec GeoScience Limited on the Property.

PC Gold Inc. reports that more than a dozen excellent new targets have emerged from a recently concluded geophysical survey carried out over the Pickle Crow Gold Mine Property (details, below). The new targets, none of which have previously been drilled, lie beneath swamp both within the core mine trend and in areas lateral to it. Drill crews have been remobilized to the Property following the holiday break, and drilling of the first of these new targets has now commenced with a single shallow drill. To expedite testing of all targets while the winter cold-weather window allows, a second shallow-intermediate capable drill is expected to be added to the program later this month. This will bring to three (two shallow, one deep) the number of drills active on the Property. The two shallow drills will be active continuously in the January through April period, with testing of the new shallow targets to be concluded prior to spring break-up. Concurrently, drilling of a deep mother hole (PC-09-052) and wedges designed to test well below the deepest workings of the former mine will also continue.

Capstone Mining Corporation reports about the successful assay results from 58 drillholes completed in 2009 at its high grade Minto copper-gold mine in the Yukon. These holes were drilled with a variety of objectives, ranging from infill drilling within existing resources to regional exploration.

Eleven other reported holes were drilled on a variety of chargeability anomalies from Pole-Dipole Induced Potential and Titan-24 Direct Current Induced Potential surveys. Most of these holes intersected anomalous copper mineralization and locally higher grade mineralization over narrow intervals, but did not adequately explain the anomalies, some of which are comparable in size and tenor to those over the Minto North and Minto East discoveries. Follow-up down-hole geophysics suggests these chargeability targets may be offset from the limited coverage of the surface IP surveys. This issue will be addressed by a more extensive Titan 24 DCIP survey in 2010, in order to support more refined targeting for further exploration drilling in mid-2010.