Posts Tagged Clear View Geophysics

A set of geophysics for Iron Oxide Copper Gold deposit in Quebec

Posted by on Thursday, 17 July, 2014

Honey Badger Exploration Inc.  has completed the interpretation of the geophysical data over the Delhi Pacific copper showing on its Sagar Property. The coincident gravity, magnetic, electromagnetic (“EM”) and induced polarization (“IP”) anomaly associated with the Delhi showing are typical of those expected from an Iron Oxide Copper Gold (“IOCG”) deposit.

The IOCG model is further supported by the presence of a favourable structural setting for an IOCG deposit, namely the abundance of polymetallic showings (copper-gold-silver-cobalt) and the presence of diagnostically verified IOCG hydrothermal alteration.

At the Delhi Pacific showing, historical significant drilling intersections include 45.81 metres @ 0.51% copper and 10.7 metres @ 0.78% copper. While these intersections were not tested for silver, gold or cobalt, historic and recent grab samples* contain up to 1.8 grams per ton (“g/t”) gold, and up to 35 g/t silver.

*Grab samples are selective by nature and are unlikely to represent average grades of the deposit(s).

The selection of new drill targets is based on an interpretation of the IP/Resistivity, airborne magnetics, ground gravity and airborne EM data. In the winter of 2014 ClearView Geophysics Inc. completed a Surface Spectral IP survey over part of and extending east of the Delhi Pacific showing (Figure 1).

To view ‘Figure 1 – Surface Spectral Induced Polarization survey location lines’, please visit the following link:http://media3.marketwire.com/docs/honef10715.pdf

The interpretation indicates an anomaly associated with the historic drilling at Delhi that increases both in intensity and size east of these drill holes for more than 1.5 kilometres. The apparent resistivity data is presented in Figure 2 (red-purple indicates low resistivity and represents the target area):

Figure 2 – Resistivity Data at Delhi Pacific

The gravity data indicates that the southwest side of the magnetic high zone at Delhi Pacific coincides with a gravity low feature, whereas to the north is a gravity high. This indicates that the resistivity low/chargeability/electromagnetic target is located along a major structure that represents a favourable event for IOCG mineralization. The target area at Delhi covers more than 3 square kilometres: approximately 1.5 kilometres in strike length multiplied by an average width of 200 metres (Figure 3).

‘Figure 4 – Magnetic Inversion over Delhi Pacific’


Goldbrook’s Raglan Winter Geophysics Program Underway

Posted by on Monday, 17 May, 2010

Goldbrook Ventures Inc.,   announces the commencement of a winter geophysics program at its McCart Lake camp in the western portion of the Raglan belt, Ungava, Quebec in order to carry out a planned winter geophysical program.  Contractors, equipment and support personnel arrived at the McCart Lake camp site in early April, using ski-equipped aircraft, to carry out a program starting April 18th, of ground magnetic and EM surveying in preparation for an aggressive exploration and drilling program during the summer season.

About 1600 line-kilometres of continuous recording high resolution magnetometer surveys over various areas of interest are being completed by Clearview Geophysics Inc. These high resolution magnetometer surveys are conducted in “walking mode” in conjunction with GPS guided snowmobile towed mode. The magnetometer data provide the mapping information for the detection and delineation of ultramafic bodies which host Raglan-style mineralization.

Two crews, from Crone Geophysics and Exploration Ltd, are conducting up to 70 line-kilometres of moving loop electromagnetic surveys using a combination of SQUID and fluxgate sensors. These sensors are state-of-the-art instruments specifically designed to detect and discriminate the highly conductive nickel sulphides of the Raglan deposits.  The moving loop model of surveying is labour intensive, but provides the highest resolution.

The 2010 exploration program, with a budget of over $17,500,000, includes a goal of 25,000 metres of diamond drilling in conjunction with an extensive program of prospecting, geochemical surveys, geological mapping and ground geophysics over both the east and west extensions of the productive north and south Raglan horizons. This is an aggressive expansion from the previous, and successful, exploration focus on the Belanger Trend into new, and high potential geological target areas. This program will follow-up on the positive results of geological, geophysical and remote sensing surveys completed in these areas over the last two years and which helped with discoveries of extensive nickel sulphides at the Mystery and Timtu zones.  The work is expected to be successful in defining new sulphide nickel occurrences within the Company’s extensive Raglan Nickel Belt property holdings.

The large Goldbrook property is located in Nunavik, northern Quebec, Canada.

The 2008 exploration program consisted of 12,000 metres of BQ size core drilling, a remote sensing program that covered large parts of the Goldbrook property, a regional geology and sampling program, interpretation of VTEM geophysical data collected in 2007, and reclamation of two camp sites previously used for exploration in parts of the Goldbrook property.

There are numerous other areas of interest / showings that warrant analysis and search for specific drill targets. Some of these areas are also candidates for further geophysical surveys or tests with methods such as gravity, walking magnetics, ZTEM, and SQUID-sensor ground EM, and possibly for more detailed VTEM analysis. In addition, analysis of regional geochemical data (rock, soil and till) may provide insights or support other evidence for drilling.