Posts Tagged MPX geophysics

Helicopter Magnetic and Radiometric Survey on Anza Property in Colombia

Posted by on Saturday, 16 June, 2012
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Waymar Resources Ltd.  announces the completion of a 2,867 km helicopter magnetic and radiometric survey, covering approximately 260 km2, over their Anzá project in Antioquia, Colombia. Preliminary data images can be found on the Waymar website at the following links:

http://www.waymarresources.com/_resources/maps/RTPAnza_image1.jpg

http://www.waymarresources.com/_resources/maps/RTPAnza_image2.jpg

http://www.waymarresources.com/_resources/maps/RTPAnza_image3.jpg.

The survey was completed by MPX Geophysics Ltd., of Markham Ontario, at a nominal altitude of 70m and 100m traverse line separation. The results will be used to aid geologic mapping, identify structures and alteration associated with hydrothermal mineralization and possible porphyry copper-gold systems within the project area. The survey data is currently being processed by MPX and final products are expected by July 2012.

Waymar has also completed a structural evaluation using Radar images over the entire area of the land package held in the Anzá district. The images were acquired, processed and interpreted by Alto Americas S.A., of Buenos Aires, Argentina, a company that specializes in remote sensing products and services.

“The preliminary geophysical data confirms that the Aragón structure, which controls the gold mineralization at the Anzá deposit, is a continuous, district-wide feature,” commented Pablo Marcet, CEO. “The combination of Magnetics and Radiometrics is giving us a powerful tool to identify and prioritize targets in our extensive land package. Together with the interpreted Radar images, previous geological mapping and geochemistry, we have an excellent technical base to start testing the numerous exploration targets in the district. Meanwhile, we continue to drill at Anzá and aim to release a new batch of drill results before the end of June.”

Peter Diorio, P. Geo., President of GeophysicsOne Inc. is the qualified person related to the helicopter magnetic and radiometric survey and has reviewed and verified the technical disclosure contained herein and accepts responsibility for such disclosure. David Makepeace, M.Eng., P.Eng., senior geologist for Micon International Limited is the qualified person for the Anzá drill program, as defined by National Instrument 43-101.

There has been insufficient exploration to define a mineral resource at the Anzá property to date, and it is uncertain if further exploration will result in targets being delineated as a mineral resource. Any potential quantity and grades are conceptual in nature.


Magnetic and radiometric survey in Colombia

Posted by on Thursday, 27 October, 2011

CuOro Resources Corp. announces that it has received the final data, maps, and report on the airborne magnetometer and radiometric survey which was conducted by MPX Geophysics Ltd (“MPX”) over the Company’s 100% owned Santa Elena Project, located in the Department of Antioquia, Colombia.

Highlights Include:

  • A large magnetic feature over 1km in length over the outcrops in the current exploration area
  • A new large 1km by 500m intense magnetic anomaly in the southwest corner of the property several kilometers from the current exploration area
  • Several smaller yet intensely magnetic bodies have been mapped on the Company’s northern concession

The airborne magnetometer and radiometric survey was flown with a helicopter and covered the entire 1287.5 hectare project area. Lines were orientated east-west and flown at a 50 meter line spacing with north-south tie lines every 500 meters. A total of352 line-kilometers of data were collected.

The objectives of the airborne magnetic and radiometric survey were to provide information to facilitate geological mapping and to assist in the delineation of target areas for future ground geophysical surveys and guide the current diamond drilling program. Prioritization will be the interpretation of anomalies which may represent massive sulphide mineralization.

VMS deposits typically contain pyrrhotite, an iron sulphide that is magnetic and can be detected by magnetometer surveys. Tests by Company geologists confirm the presence of pyrrhotite within the massive sulphides at Santa Elena.

Within the current area of exploration a large magnetic feature has been delineated from the southern most massive sulphide outcrops to the northern most edge of the Santa Elena Property. The magnetic feature is over a kilometer in length and is on strike with the existing massive sulphide outcrops.

A large highly intense magnetic anomaly has been mapped on the southwest corner of the property several kilometers from the current area of exploration. This magnetic feature is approximately one kilometer in length and five hundred meters in width. It is unknown whether this magnetic anomaly is part of a larger magnetic body, or if it is an independent geological feature. This anomaly warrants further investigation, and field crews will be deployed to this area immediately. No prior exploration or field mapping has been conducted in this area however recent work has discovered two new massive sulphide outcrops that are currently being channel sampled.

Several smaller yet intensely magnetic bodies have been mapped on the Company’s northern concession. These anomalies will be targeted for field exploration.

This data – used in combination with the recently completed phase one IP and resistivity survey -will greatly enhance the Company’s interpretation and understanding of the regional geology and structural system within the Santa Elena Project area, along with the identification of additional drill target areas.

Santa Elena is classified as Porphyry and poly-metallic deposits project containing 1,287.5 hectares near the north end of the Antioquia batholiths, in sequence of Cretaceous marine sediments and basaltic volcanic. Contains a large stockwork system, with an iron cap on top of the massive sulphide outcrops (Gossan) which potentially indicates an underlying porphyry system. Excellent infrastructure including paved road access, two hydroelectric plants within 5 km, and abundant water supply. Geological mapping and sampling has identified 2 VMS areas of outcropping (Azufral & Arroyo), and gossans. Ground geophysics has identified 4 strong conductors with good vertical extent, 2 of which are coincident with the Azufral & Arroyo outcrops. Artisanal underground workings exposed mineralized, sheared and brecciated mineralization with up to 2. 50% sulphides, from 0.5% to +2% Cu & from 0.2% to +1% Zn.


Comprehensive geophysics for Utah’s copper district

Posted by on Thursday, 23 December, 2010

Andover Ventures Inc. announces today that Quantec Geoscience of Toronto, Ontario, Canada are currently conducting an IP (induced polarization) survey on the Big Hill prospect located on Chief Consolidated Mining Company’s (Chief) property (a subsidiary of Andover), East Tintic Mining District, Utah. Data is being collected from IP lines being conducted by Quantec utilizing the Titan IP/ DC system which is an alternate system to conventional IP survey systems. The Titan IP/ DC system provides a better IP and resistivity resolution than conventional IP. Weather permitting, the field work will be completed by the end of 2010.

Western Geco has completed a MT (magnetotelluric) survey on the Big Hill prospect. This data has allowed Western Geco to develop a final MT inversion model for the Big Hill prospect and this model has been sent to Kennecott for their review.

MPX Geophysics based in Markham, Ontario, Canada has completed an airborne magnetic survey. An aeromagnetic survey is a geophysical method used for imaging rock units with variable magnetic characteristics. This passive measurement method measures the intensity of the ambient magnetic field by towing a magnetometer on a pre-determined grid behind a helicopter. The resulting magnetic map will show the distribution of rock units based on their magnetic mineral content. The final report has been forwarded to Kennecott and upon data interpretation will be used to visualize geological units and to interpret subsurface geological structure.

The initial 2010 work program commenced in August of 2010 and included an airborne magnetic survey, IP (induced polarization) survey, a ground MT (magnetotelluric) survey, surface mapping, grab sample analysis with PIMA and assay, review and re-assay of Anglo American core from the Big Hill prospect and a compilation and review of old mine data from Chief’s property.

Under the terms of the agreement, Kennecott may earn a 51% interest in the Big Hill Project by completing a Pre-feasibility Study or incurring $20,000,000 in expenditures, whichever occurs first, and an additional 4% interest by funding all Project costs until delivery of a Feasibility Study accepted by Rio Tinto.

The Big Hill porphyry target is located in the East Tintic Mining District approximately 43 miles south east of Rio Tinto’s Bingham Canyon Mine, which is recognized as one of the worlds largest open pit copper porphyry deposits. A stock work of quartz vienlets occupies the core zone of the Big Hill target area with a lithocap super imposed on the stockwork, a process known as telescoping. Lithocaps usually define the shallow parts of porphyry copper systems typically above the main Cu-Au-Mo zone.


MPX Geophysics in Mexico

Posted by on Friday, 14 May, 2010

BOWMORE Exploration Ltd. has announced that it has contracted MPX Geophysics Ltd. of Markham Ontario, to conduct a helicopter-borne geophysical survey on its recently acquired “Natora-South” now called “CHIVAS” property covering over 24,000 hectares in Sonora, Mexico. The Chivas property is located in the Sierra Madre Occidental known for its numerous gold-silver mines. The airborne survey is scheduled to commence this week and will be completed by May 25. The flown pattern takes into account the geological trend and the major structures interpreted from the government regional magnetic survey. A total of 568 km will be flown covering an area of 75 square kilometres. The high sensitivity aeromagnetic survey was designed to detect any major structure or underlying intrusion known to be associated with the gold mineralisation in the district. The radiometrics will identify with more accuracy the zones of alteration interpreted from the Aster image. Argillic and silica alteration zones are recognized in association with mineralisation in the district at Dolores, Mulatos, Pinos Altos and Ocampo major gold mines. Such alterations identified during the survey will be the object of a ground follow up, supported by mapping, prospecting and geochemical sampling.

The data interpretation will be realized by a geophysicist once the survey is completed and the data sets are made available. Bowmore will integrate this new data with existing geological mapping and historical exploration records to generate an interpretation that will be used to direct a more focused gold exploration program. Through the analysis of the survey results Bowmore will study the correlation between the identified structures to the known gold occurrences and alteration zones of the property. The property encompasses Cretaceous limestones overlain by a volcanic series of Cretaceous to Triassic age and intruded by Triassic felsic intrusions similarly to the geological setting described at “Minefinders” Dolores mine located 15 km East, “Alamos” Mulatos deposit 40 km south and “Gammon Gold” Ocampo deposit 80 km south. All these deposits report reserves exceeding 1 million ounces.

--  The Chivas property exhibits several areas with strong argillic and/or
    silicic alteration observed from an ASTER satellite image as observed at
    the Dolores deposit located 15 km to the east. So far, only 2 of those
    areas have been investigated by restricted drilling;
--  A structural control of the mineralisation is described in several of
    the major surrounding gold deposits; major structures are suggested by
    the regional magnetic map and by the topography within the Chivas
    property block and will be verified by the actual magnetic survey.

Amex Exploration inc. has announced as well that MPX Geophysics Ltd., is starting a helicopter -borne geophysical survey on the recently group of properties bought from Blue Note Mining that includes its 100% owned Nueva Escondida and Natora North under the same contract, the survey will also cover the Natora-South property recently optioned by Bowmore and now called the Chivas property. The group of properties cover over 48,000 hectares in Sonora, Mexico and are all located within the Sierra Madre Occidental gold belt known for its numerous gold-silver mines.


Magnetic and radiometric for gold in Mexico

Posted by on Wednesday, 28 April, 2010

MPX Geophysics Ltd. of Markham, Ontario, has begun high resolution, low level, helicopter-borne magnetic and radiometric surveys over 6127 hectares (1359 line kilometers) of the Santana property and peripheral areas for Corex Gold Corporation.

Magnetic susceptibility will be used to delineate fault structures and associated zones of alteration. The radiometric survey will aid in outlining zones of potassic alteration associated with epithermal and porphyry systems.

Target: A multimillion-ounce epithermal gold deposit amenable to open pit mining and heap leaching.

Property

  • Located 50 km SE of Alamos Gold’s 3 million Mulatos mine (Sierra Madre Occidental mountain range in the east-central portion of the State of Sonora, Mexico)
  • Project area covers 7,700 hectares
  • Accessible via paved highway within 15km
  • Corex has right to acquire 100%