Since acquiring the property rights to the Medicine Springs Project in August 2017, Northern Lights has completed the Phase 1 exploration program which was reported in Sedar on December 07, 2018 and February 01, 2019 The results and important conclusions are briefly summarized below.
A- NI43-101 Technical Report
A detailed NI43-101 Technical Report titled “Geological Report and Summary of Field Examination, Medicine Springs Property, Elko County, Nevada” dated January 15, 2018 has been filed on SEDAR (the “NI43-101 Report”). The NI43-101 Report was completed by independent geologist and qualified person, Robert Lunceford CPG, M.Sc.
The NI43-101 Report provides a comprehensive overview of past known exploration activities on the Project and a detailed discussion of potential analogue models for the Medicine Springs Project.
The NI43-101 Report suggests two geological models are applicable to the Property. The first is high-angle, structurally controlled silver and base metal mineralization hosted by and associated with jasperoids, breccia, and mineralized replacement of the Permian and Triassic carbonate units. Peripheral to these high-angle structures, the drilling documents a replacement-style mineralization developed within receptive carbonate beds. This combination of structural and stratigraphic control is typical for many precious metal deposits in Nevada including the carbonate replacement type mineralization. These deposit types are also characterized by zoning and significant vertical extent in contrast to limited depth of epithermal deposits.
The NI43-101 Report goes on to suggest that the Medicine Springs Property mineralization has geological similarities to the Hermosa/Taylor Zn-Pb-Ag deposit owned by South32 following the acquisition of all the issued equity in Arizona Mining Inc. in August 2018.
B- Development GIS Database
Northern Lights has compiled all historic exploration work including drill hole data and assays, surface sample assays, geophysics and geological mapping into GIS data base.
Northern Lights completed detailed surface mapping at a scale of 1:5,000 and rock sampling over the entire Medicine Springs license area. The mapping was carried out from August to November, 2108.
C- Aeromagnetic Survey
Northern Lights has completed an drone assisted aeromagnetic survey over the entire license area. A total of 810 line-kilometers was flown over the licence area at a nominal line spacing of 50 meters and a flying height of 30 meters. The survey has highlighted 6 geophysical targets that Northern Lights is planning to drilled in 2019. See Geophysics Results – Identify Key Targets below.
D- Cominco CSAMT Geophysical Data
In 1997-1998, Cominco American Inc. carried out Controlled Source Audio-frequency Magnetotellurics (CSAMT) and Induced Polarization (IP) geophysical surveys over the Medicine Springs Property. Cominco completed nine lines of CSAMT and a single line of IP. Recently Zonge Australia completed a 2D inversion of the Cominco CSAMT data.
E- Geophysical Interpretation Aeromagnetics and CSAMT Data
The aeromagnetic and CSAMT survey data were analyzed and interpreted by GeoExplore Pty Ltd, an Australian based geophysical consulting firm and the main conclusion are summarized below.
- Mineralization has an unclear geophysical signature.
- Six geophysical targets labeled M-1 to M-6 were identified based on magnetic structural analysis, proximity to interpreted intrusive dykes and an association with CSAMT resistivity highs.
- Geophysical targets include, i) horizontal carbonate replacement targets and ii) vertical targets associated with intrusive dykes.
- Magnetic structural targets M-2, 3 and 5 are coincident with strong resistivity highs and are considered to be priority drill targets in the Golden Pipe area, M-6 anomaly is also associated with anomalous soil Pb and Zn values
F- Ionic Leach Geochemical Soil Survey
Northern Lights completed a soil sampling survey over the entire licence area. The soil grid over 70% of the licence was completed on 100 x 100 meters and remainder of the area was covered by a 100 x 400 meter grid. A total of 794 samples were collected and have been submitted for analysis to ALS in Vancouver using a 62-element Ionic Leach analytical method.
Ionic Leach analysis is a cost-effective geochemical program for detecting subtle, coherent multi-element anomalies in surface soils associated with buried mineralized systems. Multi-element ion anomalies are characterized by a concise fingerprint developed directly above targets and can be effectively used to define concealed drilling targets.