2-46299
I.O.C.G. Project V. L. F., VL., Electromagnetic and Proton Magnetic Survey reports
Aylmer Township: (Plan G-2901) Sudbury Mining Division
Sudbury Administrative District N. TS. 41-1-15
G.J. Gereghty
October 4,2010
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Proton Magnetic and Electromagnetic Survey Reports Aylmer Township - Plan G 2901
I. O. C. G. Project Sudbury Mining Division
Sudbury Administrative District
Property Description Ownership:
The property is comprised of five contiguous claim blocks located in the northwest quarter of Aylmer Township east of Sam Martin Lake. Claim blocks are numbered: 4216908, 4216909, 4216910,421955, and 4203306. Note that C. B. 4203306 was "permitted" earlier for quarrying rights filed under number A. P. 108326. The combined claim blocks form an area measuring 2.5 kms. E-W by 2.8 kms N-S. Thomas Hugh Sheppard of Hanmer, Ontario is the registered claim holder.
Access and Terrain: The property can be reached by motor vehicle from Capreol first on RR. 84 (formerly Hwy.545) traveling northward about 7kms to the ":Podolski" mine road which branches eastward. Follow this gravel road approximately 3kms. To the "Portelance" logging road then travel northward for roughly 16kms. to the easterly branching "Poupore" logging Road. A "Bailey" bridge is visible from the road intersection crossing the Wanapitei River. Once over the river the road swings southeast following the east shoreline of the river for 8kms,. Before making an abrupt tum northward transecting the subject property in a NNE- SSW direction. Within the property the road way follows a linear depression at the base of near contiguous, high, rugged hills where bedrock exposures are plentiful.
Previous Work by other Explorers within C.B. 4203306
Information copied from "G.D.I.F. Inventory Folio #336, Aylmer Township"
Area A: Former Kennco Exploration work partly covered by our grid work on the northwest of the access road. Three pits are shown and two short drill holes were cored in 1958. Pyrite is reported in drill logs and at least one copper assay noted.
Area B: "Discovery Pit"
H. Barry drilled two holes in 1952 for a combined length of 315 feet southeast of the access road very close to the NNE trending creek. Both drill holes cut copper mineralization with at least one silver assay.
Area C: Also occurs on the southeast side of the access road in the area of our positive magnetic anomaly. R. C. Dennie drilled a 200 foot deep hole at this location in 1964. Pyrite mineralization is mentioned in this drill core.
Area D: Listed under "Mineral Occurrences" "Pit Operations - Teltech exploration" chalcopyrite and bornite are mentioned. This work is located several hundred meters north of our grid work along the northwest side of the access road.
A previous assessment work report by the writer was filed on May 12, 2010.
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Regional Geology:
Ref: Dressler B 1981: Otter Lake Ontario Geological Survey Map 2450, Precambrian Geological Series. Scale 1 inch to J;2 mile, 1:31, 680 Geology 1978
Adlington, Richard:
1981: Aylmer Township, Sudbury District O.G.S. Preliminary Map P 2190, Sudbury Data Series. Scale 1:15840 or 1 inch to ~ mile. Data compiled 1980.
Additional Grid Cutting:
In late June 2010 a contractor used chainsaws to cut the following listed lines. Line 500N-00 to 400 E, Line 700N: 100W to 400W, also from 00 to 400 E. Lines 800N and 900N from 00 to 400W The 00 base line had to be extended from 750N to 900N to enable the cutting of lines 800N & 900N. All these lines were hip-chained with line pickets every 25 meters, coordinates are written on metal tags attached to the pickets.
On July 18, 2010 Tom Sheppard and the writer cut and hip-chained a line at 125W from 700N to 900N for a planned I. P. survey over a mineral showing at 835N.
On September 10 & 17,2010 Tom Sheppard and I extended the 00 base line from 900N to 1000N then cut and chained both lines to 400E.
Total length of additional lines cut since the May 12110 filing is 3. 15 kms.
Objective of the VLF Electromagnetic Survey
The VLF survey was done to outline ground conductivity that might represent disseminated or massive sulphides which mayor may not be magnetic depending on the type of contained sulphides and the absence or presence or magnetite.
VLF surveying is also effective in delineating conductive shear or fault zones that could have associated gold mineralization. A major advantage of the VLF survey is the definition of small sulphide bodies. A major disadvantage of the VLF survey is that it sometimes traces wet shears, creek beds, certain lake shores, conductive clays.
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Electromagnetic Survey Procedure
The "Radem" VLF electromagnetic unit used on this survey was manufactured by Crone Geophysics Limited. Operation of the Radem unit is quoted from Crone's operation instructions:- "VLF communication broadcast stations are positioned throughout the world. Numerous VLF stations transmit steadily except for maintenance periods usually of ~ to 113 day per week. The Radem receives any of 7 of these stations with selection by means of a switch. (Note- The Radem unit must be factory tuned to receive the 7 stations selected by the instrument owner. "The useable range of these stations varies widely with power and transmission conditions but is usually between 1,000 and 5,000 miles. A station should be selected that is located in the same direction as the regional strike. For example, if the geological strike is east -west then a station located east or west of the operator should be used. If in doubt of the geological strike two orthogonal stations should be read. "
V.L.F. E.M. survey work was first done December 5, 2009. Two transmitter stations were read at each grid line station: Cutler Main (NAA) and Jim Creek, Washington (N.L.K.) Distances to these transmitters vary greatly and the strength of the signals are quite different, however, the readings agree surprisingly well considering the rugged terrain which also affects V.L.F. readings. Only the dip angle readings were recorded.
Plotting of the VLF dip angle readings is in profile form on 1:1500 scale plan. All readings were taken at the 25 meter station intervals along all grid lines.
V.L.F. Survey Results
VLF survey work done prior to the May 12,2010 work submission indicated conductor(s) both west and east of the grid area. Grid lines were extended and subsequent survey work located a weak conductor west of the base line between 0+50W & 250Won lines BOON and 900N. This conductor strikes diagonally across the grid passing through a heavily oxidized mineral showing and is directly on strike with a second close-by mineral showing to the south
On the eastern side of the grid a strong V. L. F. conductor was traced through a very wet swamp from lines 600N to BOON. This conductive trend continues northward but weakens considerably on line 900N, then is only detected from station NLK on line 1000N.
Vertical Loop Electromagnetic Survey
The equipment used is an I. N. C. 0. designed MK.IV ground E. M. unit. The transmitter and receiver coils are circular in shape, twenty inches in diameter, battery powered operating at 1000 c.p.s. While operating the transmitter is held in the vertical plane pOinted at the receiver while the receiver is held hOrizontally and is tilted back and forth until a null occurs in the coupled earphones. At that position the tilt angle is recorded which is a measurement of the dip of the total electromagnetic field at that particular station.
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.. .4 Vertical 1000 Survey Procedure
The survey procedure used is commonly called the "FAN" method The transmitter remains at a fixed location while 100 meter grid lines are read across the geological strike, usually on both sides of the transmitter setup. Readings are taken when the receiver is positioned along strike from the transmitter and this is generally attained by shouting back and forth and then pointing the transmitter coil at the receiver. Any conductor within range of the transmitter produces a secondary electromagnetic field distorting the primary field. This distortion is measured in terms of dip angles, in degrees, on a clinometer attached to the receiving coil. These angle readings indicate the direction to the source of the secondary field and a zero reading at the cross-over represents the axis of the conductor.
On September 2B,2010 Tom Sheppard and the writer carried out a check of the validity of the strong VLF conductor contained in the wet swamp area on grid lines 600N to BOON. The 1000 cycle MK IV unit only indicated a weak ground conductor which was disappointing.
1000 cycle survey results are plotted in profile form on a 1:1500 scale grid map. All readings are taken at the 25 meter spaced line pickets.
Objectives of the magnetometer Survey The Proton magnetic survey will outline mafic metavolcanic rock containing disseminated magnetic minerals such as magnetite or pyrrhotite. Gabbroic or dibasic rocks may also be defined because of accessory magnetite.
Anomalous magnetic low areas may reflect zones of quartz-flooding, or areas of strong hydrothermal alteration where Original magnetic properties are destroyed.
Magnetometer Survey Procedure The instrument used is a "Geometrics Model G-B16" proton magnetometer which measures the earth's total field intensity to accuracy of 1 gamma when used with the sensor staff in a weak to moderate gradient magnetic field. This hand held magnetometer has a world wide range of from 20,000 to 90,000 gammas. When taking a reading no levelling or special orientation are required: the operator simply presses a switch on the top of the instrument and obtains a 5 digit numeric display readout directly in gammas.
Magnetic base reference stations were established at the 50 meter grid line intersection along the 00 base line from 500 N to 750N. All stations were read twice in a short time interval and the maximum change in the repeat readings was +Bnts, therefore, each set of readings was averaged and this averaged reading is the one referenced to when tie-ins are made.
When commencing to survey grid lines a base reference station was first read and recorded with the time of reading. Tie-ins to other base stations were generally within an hour time interval and time read is also recorded. Drift variations are corrected based on the time interval between base station tie-ins. USing this drift correction method all magnetic readings are made relative to the first reading taken at 00-500N.
As grid work progressed to 1000 N and magnetometer surveying followed, then the most convenient previously established base line tie-in point was read at the beginning of surveying and at the completion of the survey day. Drift corrections were made as required.
Magnetometer readings are plotted on a a1:1500 scale plan with magnetic values show numerically at their respective grid station. Survey values are contoured at 100nt intervals on this plan.
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Magnetic Survey Results
Expanded survey coverage of the area has shown that the most prominent magnetic trend strikes diagonally across the center of the grid in a general NNW-SSE direction. The intensity of this anomalous zone varies in width from +700 to +1300nts. And it varies in width from 100 to 200 meters.
This magnetic zone is readily explained by magnetic "laminated wacke" as shown on "Otter Lake O. G. S. map 2450".
Two more magnetic high anomalies with apparent north-south strike directions, occur near the west ends of lines 700 to 900N. In the same area oxidized sulphides are plentiful in the much broken rock exposures however, there is laminated wacke in this area too.
Along the western flank of the first mentioned magnetic high zone there is a narrow, weak low anomaly that may be caused by sheared siliceous pink quartzite, common on the slopes in the area of the quarry road shown on the grid map.
Conclusion & Recommendation
The property owner(s) are contemplating a few short diamond drill holes to obtain fresh unoxidized mineralized rock samples for accurate assaying. . .
Contingent on favourable results from the above assaying more ground survey coverage is recommended extending the western section of the grid.
Attachments
V.L.F. survey results - one page V.L. survey results - one page Magnetic survey results - one page Claim block with topography - one page
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