Completes Lac Brule Geophysical Survey
SAMA RESOURCES (TSX.V: SME) QUEBEC COMPLETED A 1,494 LINE-KM HELITEM2 SURVEY AT THE LAC BRULE NICKEL-COPPER PROJECT IN THE PROVINCE OF QUEBEC OUTLINING SEVERAL HIGH CONDUCTIVITY ZONES.
Sama Resources Inc.'s Sama Resources Quebec Inc. (SRQ), a fully owned subsidiary of the company, has completed and interpreted a Helitem 2 electromagnetic and magnetic helicopter geophysical survey of 1,494 line kilometres at the new Lac Brule nickel-copper property in the province of Quebec, Canada.
As a follow-up on the new gossan discovered in May, 2021 (see press release June 16, 2021), SRQ commissioned Xcalibur Multiphysics (MPH) Canada Inc. for a Helitem 2 electromagnetic survey supplemented by a high-sensitivity cesium magnetometer. One block of claims (390 claims) was flown between Dec. 5 and Dec. 14, 2021. The survey coverage consisted of 1,374 km of traverse lines flown with a spacing of 200 and 100 metres and 119 km of tie lines with a 2,000 m spacing.
"While we are fully committed at exploring and developing our Ivorian Samapleu nickel-copper-PGM [platinum group metal] assets with our partner Ivanhoe Electric, Sama is demonstrating its ability at finding new highly prospective grounds worldwide in totally virgin territories," said Marc-Antoine Audet, PhD, PGeo and chief executive officer of Sama Resources. Dr. Audet is continuing by saying, "SRQ's 100-per-cent-owned Lac Brule project is only five hours driving north of Montreal, Quebec province, which greatly facilitates our upcoming explorations programs."
No historical prospecting or ground exploration had been reported from the Lac Brule area prior to SRQ.
The past-producing Renzi nickel-copper mine is the closest mining activity with historical information available. The Renzi mine is located 48 km east-southeast of the Lac Brule property. The company is targeting possible accumulations of Ni and Cu mineralization at Lac Brule that could be of similar nature to that at the Renzy mine, Voisey Bay Ni-Cu mine, and at other well-known Ni-Cu deposits in Canada and worldwide.
Geophysical Helitem 2 electromagnetic program
The Helitem 2 system is composed of a 40 m cable to which is attached the transmitter loop. The receiver platform and the receiver coil are located at the centre of the 35 m diameter transmitter loop approximately 0.1 m above the centre of the transmitter plane. The real-time navigation GPS antenna is on the tail boom of the helicopter. The barometric altimeter, radar altimeter, laser altimeter, video camera and data recorder are all installed in the helicopter. GPS antennae are attached to the transmitter loop to give positional information and transmitter orientation.
The survey used a 7.5-hertz one-half cycle of the Helitem 2 system, made up of a square pulse (on-time) of approximately 34 milliseconds in duration followed by approximately 34 milliseconds of off-time before the pulse is repeated with the opposite polarity. After acquisition the measured data are windowed into 25 ranges called gates. Gate widths increase as time after turnoff increases because, as the energy from the transmitter decays, a wider sample must be taken to get a valid average. The position of the first off-time gate is selected after examining several flights of data and is as close to the transmitter turnoff as possible. The power of the pulse causes eddy currents in the system after the turnoff and the first off-time gate cannot start until these have died away. The earliest data have had less time to penetrate the subsurface and so contains information from the near surface. Detailed technical information on the survey is available on Sama's website.
Xcalibur MPH selected electromagnetic (EM) anomalies automatically using proprietary software from both X and Z components using the fourth off-time gate and a threshold of 100 nT/s. These automatically generated anomalies were then examined in profile form for each line against the X and Z EM responses, decay information, magnetic responses, altimeter readings and flight path videos, removing those not considered valid and adding additional anomalies missed by the threshold. For each anomaly the conductor type was interpreted and assigned to each anomaly. After reviewing all anomalies, the following parameters were associated with each anomaly using the data for the fourth off-time gate and where applicable: conductivity thickness product (CTP), amplitude of EM response, last off-time channel with an anomalous response, time constant, apparent depth and dip.
2022 exploration program
SRQ will continue surface exploration at the Lac Brule and Lac Brennan properties. Exploration works will include geological mapping and sampling, and ground geophysical survey aiming at drilling priority targets by the fall of 2022. An existing vast network of forestry roads and bridges will greatly facilitate access for all Sama's exploration works.
The technical information in this release has been reviewed and approved by Dr. Audet, PhD, geology, PGeo, and president and CEO of Sama, and a qualified person as defined by National Instrument 43-101 Standards of Disclosure for Mineral Projects.