Newly released paper discusses MT applications and implications in the Red Lake Greenstone belt following Metal Earth initiative using SPARTAN MT .

Crustal conductivity footprint of the orogenic gold district in the
Red Lake greenstone belt, western Superior craton, Canada
Ademola Q. Adetunji1, Gaetan Launay1, Ian J. Ferguson2, Jack M. Simmons1, Chong Ma1, John Ayer1 and Bruno Lafrance1
1Mineral Exploration Research Centre (MERC), Harquail School of Earth Sciences, Laurentian University, Sudbury, ON P3E2C6, Canada
2Department of Earth Sciences, University of Manitoba, Winnipeg, MB R3T2N2, Canada

ABSTRACT
A magnetotelluric (MT) study across the Red Lake greenstone belt of the western Superior craton, Canada, images a 50-km-long north-dipping conductor (<20 Ω·m) at 20–25 km
depth and subvertical conductors spatially correlated with crustal-scale shear zones and
large orogenic gold deposits. The conductors are interpreted to be the conductivity signature
of the deep crustal source of the auriferous fluids and pathways of the orogenic gold system. The geophysical results, supported by existing geochemical and fluid inclusion studies,
suggest that the Au- and CO2-rich fluids responsible for gold mineralization were released
by devolatilization of supracrustal rocks underthrust to mid- to lower-crustal levels during
subduction. This MT study links shallow gold mineralization to a deep crustal source region,
demonstrating the connection between a crustal suture zone and the formation of orogenic
gold deposits in an Archean greenstone belt.

 

American Copper Development Completes 134 line-km Titan 160 DCIP and MT Survey Over the Lordsburg Property, New Mexico

Vancouver, British Columbia–(Newsfile Corp. – January 18, 2023) – American Copper Development Corporation (CSE: ADCX) (“ACDC” or the “‎‎Company”) is pleased to report preliminary results from a 134 line-km 3D Titan 160 DC resistivity/induced polarization (DCIP) and Magnetotellurics (MT) survey. The survey was completed across 16 lines (13 N-S and 3 E-W) by Quantec Geoscience over the Company’s flagship Lordsburg property in southwestern New Mexico (see map in appendix).

The purpose of the survey is to provide property-wide deep chargeability, resistivity, and magnetotelluric information at the Lordsburg property with the intent to help identify porphyry and/or skarn style mineralization targets. The DCIP provides information to depths of 700m and greater with the MT resistivity providing information to depths of up to 2km. Quantec conducted this high-resolution survey between August 2022 and January 2023. The Company is currently working with our contractors on 3D data inversions of both the DCIP and MT surveys and expect to have those results completed by February.

 

 

Geophysical imaging of the Healy property was achieved with deep-seeing Titan™ IP and MT surveys (induced polarization and magnetotellurics), transecting five kilometers across the three target areas where drilling was conducted. The surveys were carried out towards the end of the field season due to contractor availability. The IP and MT surveys, which imaged up to 800 meters and 4 kilometers depth respectively, support the presence of shallowly dipping, east-verging architecture with mineralisation occurring along low angle thrust faults and steeper cross-cutting fault corridors. Broad zones of disseminated sulfide and strong alteration are well-defined in the chargeability and resistivity data with zones of combined high chargeability and low resistivity (high conductivity) correlating well with mineralised intercepts from the 2021 drill program. The imaging of additional strongly conductive and chargeable zones, between drilled prospects, highlight significant exploration targets which warrant follow-up drill testing.

Quantec Geoscience Completes TITAN MT Deep-Penetrating Geophysical Survey at La Virginia

  • Drilling at Paredones zone is complete, with first results now received
  • Prospecting activities continue to advance La Colmena, north of El Rubi, and return encouraging surface samples ranging up to 8.31 g/t gold and 90 g/t silver from chip sampling at the southern extension of El Molino Zone

VANCOUVER, BCApril 8, 2022 /CNW/ – Silver Viper Minerals Corp. (the “Company” or “Silver Viper“) (TSXV: VIPR) is pleased to provide an update on exploration activities within the La Virginia Silver-Gold Project, located in Sonora, Mexico. Exploration efforts since the release of Silver Viper’s Maiden NI 43-101 gold-silver mineral resource estimate have continued to advance with exploration drilling at El Rubi and expansion of mapping and sampling coverage across the project area. Recent drilling has been performed at the Paredones Zone on the eastern structural/mineralized trend. Quantec Geoscience contractors have now completed data collection for a 31 line-kilometre Magnetotelluric geophysical survey covering approximately 610 hectares (1,500 acres). Final deliverables from the survey are expected in the coming weeks.

Silver Viper had engaged Quantec Geoscience to execute a TITAN-MT deep-penetrating geophysical survey centered on the El Rubi Deposit, Paredones and El Molino target areas. The survey is expected to greatly assist in targeting for deeper portions of the mineralized system. The TITAN Magnetotelluric (“MT“) survey is capable of acquiring information from depths in excess of 1,500 metres below surface. In anticipation of the survey, drilling recently focused on probing of prospective mineralized structures and trends, most recently the Paredones area on the eastern trend sub-parallel to that hosting El Rubi.

Silver Viper’s President and CEO Steve Cope states “Quantec has shared preliminary data from the first lines of the MT survey.  We expect the geophysics to help in refining drill testing of existing zones and to reveal new deeper unexposed targets. Once the data is processed, we anticipate identification of additional prospective targets, comparable in size to El Rubi. Preliminary data is already showing potential new targets that were previously unknown.

The exploration team has reviewed preliminary 2D imaging from the first of the MT survey lines and believe the method will be very effective at La Virginia. The company eagerly awaits final deliverables expected in the coming weeks.

Prospecting work continues along the El Rubi trend and the adjacent El Molino trend. Advances have been made at the La Colmena, Paredones and El Molino South prospect areas.  These early-stage prospects host outcroppings of silicified hydrothermal breccias and quartz veining, similar to breccias and veining seen in the El Rubi area. In addition to the geophysical survey, current work includes rock chip sampling and mapping.

Targeting San Pablo Porphyry with 15,000 Meters

Toronto, Ontario–(Newsfile Corp. – February 7, 2022) – Andean Precious Metals Corporation (TSXV: APM) (OTCQB: ANPMF) (“Andean” or the “Company“), a leading Latin American precious metals producer, is pleased to announce the launch of a 15,000 m, Phase Two drill program focused on the San Pablo porphyry target identified in the recently completed Titan geophysical survey.

Our Phase Two exploration program will test a porphyry target at our San Pablo Gold Project that was identified in our recently completed Titan Geophysical survey. We have budgeted 15,000 meters for this purpose.” Mr. Griffiths went on to say, “I am encouraged by the scope of opportunity that exists for Andean to grow organically in Bolivia. Exploration is a key element of this growth, complementing our San Bartolomé mine life Expansion Study and the continued extension of our government contracts.”

Twelve diamond drill holes were completed at San Pablo in 2021 for a total of 3,580 m, as reported in the press release of November 30, 2021. The highlight was an intersection of 53.8 m grading 1.17 g/t Au from 211 m depth in hole SP21-01. All twelve holes encountered anomalous gold throughout their lengths.

Quantec Geoscience subsequently carried out a 9-line, 20.3 line-kilometers, Titan 24 deep induced polarisation survey (“DCIP”) and magnetotelluric survey (“MT”) at San Pablo that was completed in December. On many lines the DCIP shows a thick, very conductive layer close to the surface that limits the depth of penetration. The magnetotelluric survey, which is a passive method that uses the earth’s natural electromagnetic field as the source field to image subsurface resistivity structure, achieved depths of investigation of about 1,200 m. The survey detected very low resistivity anomalies at depth that are interpreted to be altered porphyry intrusions. These will be tested in the forthcoming Phase Two drill program. The holes are being targeted on the basis of low resistivity, high chargeability which may be due to sulphides with associated gold, and geology.

VANCOUVER, B.C., July 20, 2021  Tectonic Metals Inc. (TECT: TSX-V; TETOF: OTCQB; T15B: FSE) (the “Company” or “Tectonic”) today announced the commencement of a deep-penetrating TITAN-160 (“TITAN”) ground-based Geophysical Survey (the “Survey”) designed to specifically target multiple Pogo-like gold-in-soil anomalies situated on the Company’s Tibbs Gold Project (“Tibbs”), located in Alaska’s Goodpaster Mining District, 35 kilometres (“km”) east of Northern Star Resources’ Pogo Gold Mine. The Company engaged Quantec Geoscience Limited to carry out the Survey at Tibbs to transect the entirety of the structural corridor, which controls gold mineralization at the property. TITAN is a unique survey that employs two separate geophysical surveys: DC Resistivity and Induced Polarization (“DCIP”) and Magnetotelluric (“MT”) and provides DCIP resistivity and chargeability sections at depths of up to 750m, with MT collected to depths of 1,500m and greater.

 

Tibbs Gold Project – TITAN Survey Lines

TITAN-160 Survey – Technical Details
Four TITAN lines 4,000m long and spaced approximately 1,000m apart are planned at Tibbs. Dipoles are spaced at 100m along each line, with MT sites spaced at 200m, to provide data coverage to significant depths (DCIP to approximately 750m depth; MT resistivity to approximately 4,000m depth). The Survey is expected to be completed in the latter half of July.

 

TORONTOJune 11, 2021 /CNW/ – Orefinders Resources Inc. (“Orefinders” or the “Company”) (TSXV: ORX) is pleased to announce the completion of a DCIP-MT ORION SWATH ground-based Geophysical Survey (“Survey”) on its McGarry Gold Project (“McGarry”). McGarry is adjacent to the Kerr Addison Mine that produced approximately 11 million ounces of gold before closing in 1996.

The initial 2-D modeling of the Survey data has shown significant IP (Induced Polarization) and MT (Magnetotelluric) anomalies associated with the Larder-Cadillac Fault Zone between the McGarry headframe and the Barber-Larder open-pit and also at other less explored target areas at McGarry (Figure 1).

“This sort of survey, combining quasi 3-D IP and deep-penetrating MT technologies has never been conducted on McGarry. This approach is aimed at delineating new exploration drill targets that could lead to new gold discoveries on a highly prospective project along the Larder-Cadillac Fault Zone,” said Keith Benn, Orefinders Vice President of Exploration.

The Survey was designed to gather high-resolution data at depth that will be key to identifying ‘under cover’ exploration targets, i.e., potential ore bodies that do not reach the surface. Subsequent 3-D modeling of this geophysical data set along with machine learning applied to all available data for McGarry will allow the Company to prioritize exploration targets for a drilling program later in 2021.

 

Scope of Project:

Laurentian University’s Mineral Exploration Research Centre (MERC) is leading a geophysical survey in the Timmins and Cochrane area from October 7 to November 15, 2020.

The goal is to advance geoscientific knowledge about the underlying geologic architecture, structures, and mineral resource potential of the Earth’s crust approximately 30 kilometres below the surface. 

The project is part of MERC’s $104 million Metal Earth project, which is Canada’s most extensive exploration research program and involves a consortium of industry partners. 

Quantec Geoscience will use electromagnetic technology, specifically magnetotelluric (MT) and audio magnetotelluric (AMT) instruments, to survey selected stations within a corridor of approximately 130 kilometres by 50 kilometres.

The corridor stretches from Highway 11 in the north to 50 kilometres south of Timmins. Surveyors will be active in some residential areas. 

High-resolution AMT surveys in the Timmins gold camp are made possible with consortium partner support. Newmont Corp is funding surveying from Tisdale to Matheson townships. International Explorers and Prospectors Inc. and Lake Shore Gold (a subsidiary of Pan American Silver) are funding surveys from Loveland to Thorneloe townships, west of Timmins. 

The new survey adds data to previous seismic and ongoing MT and AMT surveys conducted through the Metal Earth project in Ontario and Quebec. Seismic surveys were completed as part of the Discover Abitibi project, managed by the Timmins Economic Development Corporation, in 2004. MT and AMT surveys were not previously conducted in the planned survey area. 

Toronto, Ontario – August 6, 2020 – Generation Mining Limited (TSX:GENM) (“Gen
Mining” or the “Company”) is pleased to announce the preliminary results from its SPARTAN
Magnetotelluric (“MT”) survey over a portion of the Marathon Deposit resource including the
W Horizon and structures to the west of the deposit which are believed to have provided a
favourable environment for enriched palladium mineralization. Analysis of the MT data has
identified one prospective target which consists of a discrete, previously undrilled, conductive
MT anomaly situated at a vertical depth of approximately 650 meters downdip and immediately
west of the Marathon Palladium Copper Deposit (Figure 1). The anomaly is at a depth beyond
the depth penetration capabilities of a preexisting airborne electromagnetic survey of this area
(completed by a previous operator) and most importantly the anomaly is more conductive than
Marathon Palladium Copper deposit mineralization. Consequently, the anomaly constitutes a
high priority drill target given its coincidence with the presumed down dip extension of the
Marathon Series Gabbros which constitute the feeder zones to, and are the host of, PGM-Cu
mineralization at the Marathon Deposit.

 

 

 

 

Quantec presents “Geophysical Exploration in Lithium Salars” by Dr. Leduar Ramayo and Juan Pablo.

 

Download the Presentation