VANCOUVER, BC, April 12,
2022 /CNW/ - Norra Metals Corp. ("Norra" or
the "Company") (TSXV: NORA) (Frankfurt:1KO) (OTC: NRRMF) is
pleased to announce that it has completed ~327-line kilometers, or
59.3 Km2, helicopter airborne magnetic, electromagnetic
and radiometric survey over the entire area of the Bleikvassli
Project ("Bleikvassli" or the "Project") in northern
Norway. The objective of the
survey was to obtain a dense high resolution magnetic,
electromagnetic and radiometric dataset over the Bleikvassli area
merging the reprocessed 1993 data in conjunction with this new
survey. The final dataset results of a 100m line spacing that will aid in general
understanding of the regional geology of the area as well as better
definition of the previously selected targets and identify new
ones.
The survey was flown by NGU (Norwegian Geological Survey) with a
200m line spacing with 135º azimuth,
with tie lines at 1000m distance from
each other. The height clearance for the magnetometer and the
electromagnetic probe was 49.5m and
for the spectrometer was 79.5m. NGU
had flown over the same area in 1993 and the new flight was
intended to intercalate the new flight lines with old ones in a way
to increase data density and resolution (Figure 1). The magnetic
and radiometric data from 2021/22 were merged with the data from
1993, with exception for the electromagnetic survey due to the
different type of instruments and transmission frequencies.
![Figure 1. – Bleikvassli survey area with flight paths (CNW Group/Norra Metals Corp.) Figure 1. – Bleikvassli survey area with flight paths (CNW Group/Norra Metals Corp.)](https://mma.prnewswire.com/media/1795153/Norra_Metals_Corp__Norra_Metals_Completes_Geophysical_Airborne_S.jpg)
Mr. Paulo Nuno de Sá Caessa, EurGeol., VP Exploration,
stated, "The high-quality dataset acquired can be used to
improve the understanding of the regional geology as well as the
mineralization controls. It also improves defining the potential of
known zones of mineralization, their geological settings and
identifying new areas of interest, as the dataset fills a gap in
the high-resolution geophysical surveys of the region. The future
integration of this data with other layers of geological
information will enhance the previously selected targets and will
aid to identify new ones."
Airborne Survey Technical
Parameters
NGU used a modified Hummingbird electromagnetic and magnetic
system installed in a Eurocopter AS350-B3 (LN-OSD) helicopter
designed to obtain low level, low speed detailed airborne magnetic
and electromagnetic data. The system was supplemented by 1024
channel gamma ray spectrometer to acquire radiometric data. The
instrument specifications are listed in Table 1.
The magnetic data were recorded at 0.2 second intervals
resulting in approximately 6m average
point spacing. The data was visually inspected and spikes were
removed and after several corrections were applied before
gridding.
The electromagnetic data were recorded at 0.1 second intervals
resulting in data with a sample increment of 3m along the ground on average. The
electromagnetic system transmits five fixed frequencies and records
an in-phase and a quadrature response for each of the four coil
sets of the system. The received signals were processed and used
for computation of an apparent resistivity.
The radiometric data were recorded every 1 second intervals
giving a point spacing of approximately 29.8m. The radiometric data were processed using
standard procedures recommended by International Atomic Energy
Association (IAEA).
For quality control, the surveys, altitude and navigation data
were monitored on four separate windows in the operator's display
during the flight while they were recorded in three streams to the
PC hard drive.
The above parameters allow recognizing sufficient details in the
data to detect subtle anomalies that may represent mineralization
and/or rocks of different composition.
Table 1. Instrument specifications
Qualified Person
Mr. Paulo Nuno De Sa Caessa, EurGeol., VP Exploration, who is
the Qualified Person for Norra Metals Corp. and responsible for the
review and preparation of the scientific and technical information
contained in this news release.
About Norra Metals
Norra Metals Corp. (TSX-V: NORA) (FSE: 1KO) (OTC:
NRRMF) is a Canadian-based precious and base metals
exploration company. The Company's Norwegian assets include the
past-producing Bleikvassli polymetallic, zinc-copper-lead-silver
underground mine project and the high-grade Meråker copper-zinc-
gold exploration project. The Company also holds a 100% interest in
the Pyramid copper-gold porphyry project located in Northwest British Columbia. For more
information, please visit www.norrametals.com.
ON BEHALF OF THE BOARD OF NORRA METALS CORP.
Per: "Minaz Devji"
Minaz Devji, CEO and Director
This press release contains "forward-looking
information" that is based on the Company's current expectations,
estimates, forecasts, and projections. This forward-looking
information includes, among other things, statements with respect
to the Company's exploration and development plans. The words
"will", "anticipated", "plans" or other similar words and phrases
are intended to identify forward-looking information.
Forward-looking information is subject to known and unknown risks,
uncertainties and other factors that may cause the Company's actual
results, level of activity, performance, or achievements to be
materially different from those expressed or implied by such
forward looking information.
Neither the Canadian Securities Exchange nor its
Regulation Services Provider accept responsibility for the adequacy
or accuracy of this release.
SOURCE Norra Metals Corp.