Posts Tagged iron

482 Meters of 40% Total Iron at Flagship Radio Hill Iron Ore Property

Posted by on Thursday, 2 August, 2012

Rogue Iron Ore Corp. announces assay results from drilling at its Radio Hill iron ore project, located 80km southwest of Timmins, Ontario. Drill hole RH-12-31 intersected 482 meters of banded iron formation (BIF) returning 39.9% total iron (25.7% DTWR) and drill hole RH-12-30 intersected two intervals of BIF returning 41.0% and 43.6% total iron (27.4% and 31.8% DTWR). Both holes show the width and depth potential at Radio Hill. These reported results were drilled through the central thickened portion of the iron formation. Several drill holes show that additional high grade material is located at depth.

“These results have exceeded our expectations with robust intersections of good grades showing the potential of the thickened central portion of the iron formation. With drilling complete, Rogue has commenced market studies and metallurgical testing in order to characterize the ore for marketing the potential product both domestically and abroad,” commented Company President & CEO, Freeman Smith.



In 2011 Rogue initiated the first iron exploration campaign at Radio Hill since 1965. An airborne VTEM and magnetic survey was conducted on the entire 12,000 hectare property, including Nat River, in 2008 by Geotech Ltd. Both the Radio Hill and Nat River formations are clearly defined by geophysics.


Radio Hill is a taconite (magnetite) iron formation located 80km southwest of Timmins, Ontario and is accessed by Highway 101. Original exploration work at Radio Hill was conducted in the 1960’s, when iron ore prices were less than one-fifth of what they are today. Although low prices existed, the project still had a feasibility study completed and a market secured. Since that time, ownership of the asset has been fragmented and with various landholders owning various parts of the deposit. Over the past 50 years, little to no iron exploration work took place until 2008 when Rogue acquired both the historical resource and the surrounding 12,000 hectares of highly prospective ground which includes the 12km long Nat River iron formation.

Complex Airborne EM Geophysical Surveys on Creston BC

Posted by on Wednesday, 22 February, 2012

Eagle Plains/Providence Identify 3 High-Priority Drill Targets from 2011 Airborne EM Geophysical Surveys

Eagle Plains Resources Ltd. and Providence Resources Corp. announces receipt of results from airborne geophysical field surveys carried out over their Iron Range JV project located near Creston British Columbia. During October-November 2011, Geotech Ltd. carried out VTEM time-domain EM and ZTEM AFMAG surveys over parts of the Iron Range Project. The results have subsequently been processed and interpreted by Condor Consulting, Inc. of Lakewood Colorado.


440 line-km of airborne geophysical data has been collected over the Property area during 2011.
3 high-priority VTEM electromagnetic geophysical anomalies have been delineated in the Row target area, and are coincident with a 5km-long arsenic, zinc and lead soil geochemical anomaly.
The ZTEM survey successfully identified the Iron Range Fault as well as a northeast-trending fault similar in orientation to the gold-bearing faults at the Talon Zone.

“Geophysical data collected on the Iron Range Project has produced three high priority EM conductors that coincide with lead, zinc and arsenic geochemical anomalies on the Row Target Area.” Stated Providence Resources Corp.’s President and CEO Vince Sorace. “The combined results from the geophysical surveys have fine-tuned the Iron Range geological model and increased our confidence in the Row Target area which will be drill-tested upon receipt of applicable permits, which are expected by Q2, 2012.”

Geophysical Survey Results

VTEM time domain-EM
A total of 7 anomalies were defined from the VTEM survey; see Anomalies 1-3 represent high-priority EM anomalies and are located within and immediately adjacent to a ~5 kilometer-long lead-zinc-arsenic soil anomaly situated in prospective middle Aldridge Formation sedimentary rocks. These three anomalies may be an indication of subsurface Sullivan style lead-zinc-silver mineralization and will be drill tested in Spring, 2012. Anomalies 4 to 7 represent secondary priority targets and are likely related to the subsurface geology. Anomaly 4 is a broad, low level conductor associated with a magnetic contact and is interpreted to represent a near-surface bedrock anomaly or conductive overburden. Anomaly 5 is a formational anomaly defined by coincident EM and magnetic anomalies which correspond to the location of a sliver of upper Aldridge Formation sedimentary rocks. Anomaly 6 is a broad, northeast trending conductive zone associated with a linear, northeast trending magnetic anomaly. Drilling done in this area indicates that the anomaly is related to graphite within the Aldridge Formation sedimentary rocks. Anomaly 7 is interpreted to be an artifact that is related to a power line that transects this portion of the VTEM survey.

The ZTEM orientation survey was conducted over the Canyon Target (Talon Zone) to determine whether this geophysical method would be capable of mapping bedrock geology based upon the known resistivity and magnetic susceptibility contrasts within the Aldridge sedimentary rocks; see The survey successfully identified the Iron Range Fault as well as a northeast-trending fault similar in orientation to the gold-bearing faults at the Talon Zone. In addition, the survey identified the broad conductive zone also detected by the VTEM survey. This information is useful in better understanding the subsurface geology of the Iron Range area and how known target areas relate to major rock units and structures.

Exploration Focus

Ongoing work by Eagle Plains Resources Ltd. is focused on exploring the potential of the Iron Range fault zone and surrounding area as a conduit and host for both sedimentary exhalative (SEDEX) Ag-Pb-Zn mineralization and Iron-oxide-Cu-Au (IOCG) mineralization.

2012 Exploration Program
The Company intends to execute a full exploration program beginning in March, 2012 (subject to receipt of permits) with the objective of systematically evaluating all existing exploration data, utilizing newly acquired geophysical data, field evaluating all resulting anomalies and ultimately drill testing the highest priority targets.

Geophysical gravity survey – it is anticipated that results from this work will be available in March, 2012.
Winter drilling (Phase I) of high-priority geophysical and geochemical anomalies. High priority targets have been identified during the evaluation of historical geochemistry, 2011 soil geochemical surveys, and 2011 airborne geophysical data. Additional targets are anticipated.
Field work will be completed in summer 2012 with the objective of bringing remaining targets to the drill testing stage for Phase II drilling in late 2012.

One of the largest Ti-V-Fe deposit discovered with magnetic – History of Chibougamau

Posted by on Monday, 20 February, 2012

The Mining town of Chibougamau and the Lac Dore Vanadium Deposit

Airborne Magnetic Survey in NWT for iron

Posted by on Saturday, 1 October, 2011

Coltstar Ventures Inc. provides an update on its Mackenzie Mountains exploration program. To date, the Company has completed an airborne magnetic survey and a field program over the entire property. Collectively, these exploration activities delineated numerous magnetic anomalies and identified iron formation at the northwestern and southeastern extremities of the property.

The Mackenzie Mountains Project

The Mackenzie Mountains Project is contiguous and adjacent to the Snake River (Crest) iron deposit, the 2nd largest undeveloped iron deposit in the world. The Crest iron deposit has been reported to host a historical resource estimate of 5.6 billion tonnes at 47.2% Fe and a reported “regional resource estimate” of 18.6 billion tonnes (Yukon MIN FILE # 106F 008). Coltstar notes that a qualified person has not done sufficient work to classify Chevron’s historical estimate at Crest as current mineral resources or mineral reserves and Coltstar is not treating this historical estimate as current mineral resources or mineral reserves.

The property covers a 170-kilometre belt underlain by both the Rapitan and Coates Lake Groups.

Airborne Magnetic Survey

During the month of July, Fugro Airborne Surveys flew a helicopter-borne magnetic survey over the Mackenzie Mountains property. The Fugro survey coverage consisted of approximately 4400 line kilometres, at 300-metre line spacing. The purpose of the survey was to detect zones of mineralization and acquire information that could be used to map the geology and structure of the survey area.

The aeromagnetic survey was a complete success. Numerous long magnetic anomalies were delineated. Importantly, the survey outlined two 10 kilometre-long anomalies, extending from drilled iron formation on Chevron’s Snake River (Crest) iron ore deposit immediately onto Coltstar’s ground to the south. From here, an almost continuous magnetic anomaly was delineated over the remaining length of the Mackenzie Mountains property.

Paterson, Grant and Watson (PGW), a firm of consulting geophysicists out of Toronto, conducted a structural and lithological interpretation of the airborne geophysical data acquired by Fugro. Preliminary analysis of the geophysical data led PGW to identify a number of anomalous areas for follow-up or more detailed exploration. These areas were defined on the basis of their higher magnetization relative to the very low background levels of non-magnetic sedimentary units.

These areas were divided into three categories, based on their relative magnetic signatures:

1. 114.6 km2 of iron-rich Rapitan formation, exposed or very close to the surface;

2. 416.9 km2 of iron-rich Rapitan formation, covered by sedimentary rock; and

3. 302.7 km2 of deeply buried iron-rich rocks.

Field Program – Mackenzie Mountains Iron Project

Aurora Geosciences Ltd. conducted a ground exploration program over the Mackenzie Mountains property consisting of geological mapping, ground magnetic and susceptibility measurements and the collection of chip and rock samples.

The goal of the field program, which focused primarily on claims in the immediate vicinity of Chevron’s Crest iron deposit, was to investigate the magnetic anomalies detected by the airborne geophysical survey and to confirm the presence of iron formation in areas mapped as Rapitan Group on Coltstar’s claims.

During the ground exploration program, iron formation was observed in a number of locations on Coltstar’s Mackenzie Mountains property. The field crew observed iron formation outcrops on Coltstar’s property south of Chevron’s Crest property (Zone A). This iron formation unit continues, at a shallow angle, on Coltstar’s property, until it is terminated by a thrust fault several kilometres away. The area of potential iron formation between the outcrop location and the contact with the fault is approximately 9 km2. A Chevron drill hole, located 375 metres north of the iron outcropping on these Coltstar claims, intersected 27.4 metres grading 43.1% soluble iron.

West of Zone A, iron formation exposed in a riverbed on Chevron’s property, is likely to extend, at a shallow angle, onto several of Coltstar’s claims (Zone B). Zones A and B, each 10 kilometres long, are spatially related to the magnetic anomalies delineated by the aeromagnetic survey. For a map, showing the locations of Zones A and B, please see .

Confirmation of Copper Prospectivity

On the last day of the field program, the geological crew found malachite-stained boulders in a talus field. This observation of malachite, a common oxidation product of copper mineralization, confirms the property’s copper prospectivity. It was not possible to access the likely outcrop source due to the steep terrain. The area where the malachite was observed is coincident with thickening of the Coates Lake Group on the Mackenzie Mountains property. This discovery warrants follow-up given its occurrence in a geological setting, which is similar to that which hosts the Nite, Keele and Coates Lake deposits further to the south.

Next Steps

A ground magnetic survey and measurements of magnetic susceptibility were made during the field program in order to characterize the magnetic signature of various rock units. The results of this work will assist in the modeling of the aeromagnetic results. The primary goal of the modeling is to outline the distribution of the iron formation throughout the property.

Positive Developments Continue in southwestern Newfoundland

Posted by on Thursday, 19 May, 2011

Private Canadian Junior Mining Company Triple Nine Resources Ltd. (TNR) owners of the Four Corners Iron Ore – Titanium – Vanadium Property 23 kms east of the TCH along the Burgeo Paved Highway in southwestern Newfoundland announces significant developments for the property and it’s corporate business plan. Company Chairman and CEO Mr. Len Muise states that he is very pleased with the latest developments TNR has achieved to date in 2011 and which are summarized below.

In late February an independent consultant, based in Europe, visited the Four Corners Project (FCP) and confirmed the 2010 surface, drilling and airborne survey results that is suggesting a large, bulk tonnage deposit could exist on the FCP.

The first phase of exploration for this year is an airborne geophysical survey, which has been awarded to Geotech Ltd. of Aurora, ON. The survey planned for next week will cover the area of new staking extending 21 kms west of last years 6 km long Magnetic (MAG) anomaly. This highly anomalous region, based on drilling and surface trenching results, is now known to host significant concentrations of iron ore, titanium and vanadium mineralization. Geotech will be using their helicopter borne VTEM PLUS or Versatile Time Domain ElectroMagnetic (EM) system, which they advertise “as the most innovative and successful airborne EM system to be introduced in 30 years”.

In early July TNR will commence the 2011 core-drilling program for further testing of the mineralization intersected during the 2010 drilling. Up to 40 drill sites are planned to test the strike and down dip extensions of the Keating Hill Mineralized Zone. In concert with the drilling there will be a program of prospecting and excavator trenching designed to test the indicated extension of the more than 6 km long MAG anomaly. Last years prospecting up to 2 kms west of the MAG anomaly identified highly mineralized samples further confirming the potential for significant strike extension to the west (ref. press release November 9, 2010).
Geology and field technical support crews are in place and will be mobilizing to the project site within the next couple of weeks. Work has now commenced on recommissioning and expanding the existing trailer base camp facilities to accommodate the larger crew necessary for this years expanded work program. Geotech has advised the preliminary results from the airborne survey should be available by mid June and this information together with an upgraded interpretation and modeling of last years airborne survey results will assist greatly with directing the drilling and other phases of the planned 2011 exploration program.

Extensive 250 km Iron-T Mag Survey Underway

Posted by on Sunday, 31 October, 2010

Apella Resources Inc.  announces  that the company granted Abitibi Geophysics Inc. from Val d’Or, Quebec, a contract to conduct an extensive 250 line km Magnetic-GPS survey on Apella’s Iron-T Vanadium-Iron-Titanium project near Matagami, Quebec.

From the positive drill results obtained to date coupled with data from earlier airborne surveys covering the western part on the Iron-T Project the company has concluded that the rich mineralization discovered to date extends over the entire western extension of the Iron-T. Based on these conclusions, the rich mineralization identified to date would extend over a multi-kilometer strike length and be open in all directions and at depth.

The magnetic survey now underway will comprise about 250 km of transversal lines, base lines and tie lines and is planned to cover the entire western part of the property from Shallow Lake to the Bell River. This represents about 50% of the total area of the Iron-T Project. The central part of the Iron-T which was the subject of the 2009-2010 exploration drilling campaigns, as well as the eastern part, have been surveyed by Apella over the years from 2007 (17 original claims) to March 2010.

Once this new survey will be completed, the entire Iron-T project which currently consists of 146 claims totaling 3,995.57 hectares will have been covered by a ground magnetic survey.

Results of the new magnetic survey will be available to Apella at the beginning of December 2010 and will provide considerable abundance of drill targets which will confirm the size of this World-Class magmatic Fe-Ti-V oxide deposit.

In the past, the Iron-T area was covered by a regional airborne magnetic and electromagnetic INPUT MK VI survey which was conducted in 1977 (Questor Surveys Ltd. ?). Regional magnetic data over the Iron-T project from that airborne survey were acquired at a nominal lines spacing of 200 metres and a nominal mean terrain clearance of 125 metres. In addition, the western half of the Iron-T Vanadium-Titanium-Iron property, now being ground surveyed by Apella was covered by a regional airborne gradiometric survey which was carried out in 1984. Magnetic data in that survey was acquired at a nominal lines spacing of 300 metres and a nominal mean terrain clearance of 150 metres. The two airborne magnetic surveys outlined a broad magnetic anomaly up to 4 000 nT above the background level which is continuous over some 25 km in a WNW direction.

To date, the ground magnetic surveys undertaken by Apella have shown a direct relationship with the Iron-Titanium and Vanadium mineralization discovered. They have also provided more precise locationing of the anomalies and more accurate shapes of the targets.

The current ground magnetic survey will be carried over lines at a 100 spacing with readings every 2 seconds. The diurnal corrections are made with a synchronized Mag base station. Observation of the Total Magnetic Field (TMF) will be recorded and treated with Geosoft software. The Vertical Gradient will be calculated from the TMF.

The survey under progress is planned to confirm the lengths and widths of the airborne anomalies. It will also cover a 3 km long NW oriented magnetic axis which starts near the southwest shore of Shallow Lake and which seems to joins the main magnetic axis. This magnetic “South Branch” is about 3 km long and has never been drill tested.

The Iron-T Vanadium-Titanium-Iron property is located in the Matagami area in the west-central part of the Province of Quebec, Canada, approximately 780 km north of Montreal.

Airborne Survey Defines Major Iron Ore Target in Cameroon

Posted by on Sunday, 1 August, 2010

African Aura Mining Inc.  listed exploration to production company focused on iron ore and gold in sub-Saharan Africa announces the results of the recently completed airborne geophysical survey undertaken by New Resolution Geophysics across the Company’s Nkout, Ngoa and Akom iron ore projects in southern Cameroon.


  • Nkout defined by a major geophysical anomaly covering at least 8km of strike length
  • Further 12km of targets generated around Nkout, considered to be moderately magnetic
  • Previous grab sampling at Nkout returned up to 68% Fe and averaged 55% Fe
  • Phase one 4,200m 10 hole drilling programme to commence imminently
  • Nkout deposit is strategically well located in an emerging iron ore province:
    • 2.5 billion tonne Mbalam iron ore deposit (located 150km to the south east)
    • Close to the proposed rail route to a port which will service the Mbalam deposit

African Aura has received the interpretation of the data from the recently completed ground and 14,000 line km high resolution airborne geophysical surveys (EM and gravity) covering the company’s Nkout, Ngoa and Akom iron ore projects in Southern Cameroon. The data for Nkout suggests the presence of an east-west striking antiform with two limbs approximately 100m thick and magnetic susceptibilities of around 2.0, which is considered consistent for a prospective banded iron formation.

Luis da Silva, President & CEO of African Aura commented:
“Until today this asset was not valued in our portfolio. The results from the airborne geophysical survey at Nkout and our surrounding projects in Southern Cameroon are nothing short of highly encouraging. They confirm our belief that we have discovered a potentially very significant iron ore asset in a rapidly emerging iron ore province in west Africa. Nkout is represented by an approximately 8km long priority geophysical signature, co-incident with a major hill. As previously announced reconnaissance sampling by African Aura at Nkout, returned a maximum grade of 68% Fe and an average of 57% Fe from 55 samples. A ten hole 4,200m phase one drilling programme is planned to commence imminently, in order to test the highest priority signatures to refine the geological model and progress the project towards a maiden iron resource still during 2010. We look forward to updating shareholders on progress in due course.”

Nkout Iron Ore Project, Southern Cameroon
The Nkout iron ore project is located on the 489km2 Djoum licence. The project was identified through interpretation of historic airborne magnetic and remote sensing data. Mapping undertaken to date has shown that Nkout comprises a 12km long, iron rich (Itabirite / BIF) discontinuous ridge hosted in Archaean age rocks on the Congo Craton. Reconnaissance sampling at Nkout has returned assays with a maximum grade of 68% Fe and an average of 57% Fe from 55 samples.

Archive airborne magnetic data indicates a 10km long, domain change dipole interpreted as an area of highly magnetic rocks likely to host Banded Iron Formation (“BIF”) targets in an Archaean setting. The Company considers that the dimensions of Nkout and surrounding hills represent a potentially economic iron deposit.

Airborne survey in the Lac Lablache

Posted by on Sunday, 14 February, 2010

Argex Silver Capital Inc.  reports that it has completed an airborne geophysical survey of its titanium, vanadium and iron ore properties in the Lac Lablache region on the North Shore of Quebec. A total of 418.5 kilometers was covered in this survey, comprising all of the Company’s claims in this region. The combined survey consisted of Magnetic, Electromagnetic and gamma-ray spectrometric surveys. This information will be integrated into the upcoming drilling campaign in the Lac Lablache area. The survey was completed by Geophysics GPR International Inc. a pioneer in applied geophysics in Canada, of Longueuil, Quebec.

Successful drilling results on iron project supported by Magnetic Modelling

Posted by on Thursday, 17 December, 2009

Apollo Minerals Limited announces the initial results from its recently completed maiden drilling campaign at its Mt Oscar tenement in the Pilbara, Western Australia. Significant magnetite mineralisation intersected in all 5 RC holes drilled. The initial drill programme was designed to target the highest magnetic amplitudes as modelled by independent geophysical consultants of high resolution airborne magnetic data flown over the Mt Oscar project area. The drilling comprised five reverse circulation (RC) holes drilled on four, approximately 200 metre-spaced sections, for a combined length of 1,440 metres. Further detailed geological mapping and geophysical modelling is being planned in order to better understand the geometry and continuity of the mineralisation.

Apollo has completed a low level  airborne magnetic and radiometric survey over the tenements, carried out preliminary mapping work and undertaken an analysis of rock chip samples collected from Apollo’s portion of the project area. Apollo is very encouraged by the results of the airborne survey, the preliminary mapping and the analysis of the rock chips which returned grades of up to 51.9% Fe. A low level survey was carried out at 50 metre line spacing over the Mt Oscar area and 100 metre line spacing over other parts of Apollo’s tenements.  The survey confirmed the presence of a substantial portion of the highly magnetic Mount Oscar Project area within EL 47/1379.  The magnetic high indicates a significant banded iron formation (BIF). The survey also outlined two additional magnetic anomalies within EL 47/1378,  which is largely soil-covered.  These newly discovered magnetic highs could represent either iron-rich bodies similar to Mount Oscar, or discrete ultramafic sills, similar to the nearby Radio Hill and Sherlock Bay, both of which conIn April 2009, independent consultants Southern Geoscience completed a geophysical interpretation of the Global Mount Oscar Project Area (the Apollo and Fox Resources tenements combined). Twenty six forward magnetic models and one 3D inversion model were generated from airborne magnetic data to obtain estimates for the volume/tonnage of the highly magnetic banded iron formation (“BIF”) in the Global Mount Oscar Project Area.

It was determined from this that the Global Mount Oscar Project Area down to the first 250 metres of vertical depth from surface is estimated to contain 800 million tonnes of iron ore. This estimate is considered possibly accurate to +/- 25%, however it should be considered accurate to +/- 50% for planning purposes, and to be broadly indicative at best.  Previously announced drill results from Fox Resources were utilised to confirm the accuracy of the model.

Southern Geoscience believe that, overall, the comprehensive modelling has provided a reasonably good indication of the total volume for the significant BIF sequence at Mt Oscartain significant nickel sulphide deposits.

From magnetic derivative to the Mineral Resource Estimating

Posted by on Wednesday, 16 December, 2009

CHAMPION MINERALS INC. a Canadian exploration company has drilled the Mammoth Zone (Fermont Iron Ore District of northeastern Quebec) , a 25 km2 magnetic signature representing an extensive sequence of folded and potentially thickened iron formation within the Harvey-Tuttle Claim Block, one of 16 claim blocks that make up the Fermont Iron Property, currently under option from Fancamp Exploration Ltd. and the Sheridan Platinum Group Ltd.
Prioritized targeting of iron formations on the Property is progressing on schedule using Champion’s 2008 airborne geophysical survey that has outlined numerous and significant airborne magnetic signatures of iron formations. The processing uses the zero-contour line of the Second Vertical Derivative Magnetic Contour (the “SVDMC”), by calculating the anomaly’s surface area and depth, and estimating the total volume in cubic metres (or “Volumetrics”) of the iron formations. The Volumetrics are converted to Conceptual Tonnages by multiplying the Volumetrics and a specific gravity (in tonnes per cubic metre) of the iron formation.