Deeprock Analizing High Resolution Heliborne Magnetic Survey Flown over Ralleau GOLD/VMS Project Along Urban-Barry Dfz, Quebec.
Page 1 of 3 | DeepRock Minerals Inc. | #500, 666 Burrard Street, Vancouver, BC Canada V6C 3P6
For Immediate Release
DEEPROCK ANALIZING HIGH RESOLUTION HELIBORNE MAGNETIC SURVEY FLOWN
OVER RALLEAU GOLD/VMS PROJECT ALONG URBAN-BARRY DFZ, QUEBEC.
VANCOUVER, CANADA, January 9, 2020 – DeepRock Minerals Inc. (the “Company”) (CSE Symbol:
“DEEP”), announces it is in receipt of, and now analyzing the results of , a High -Resolution
Heliborne Magnetic Survey flown over its Ralleau gold/ VMS property, located in the Abitibi
region of Quebec, just east of Lebel sur Quevillon, Quebec, and a short distance between both of
Osisko’s Urban-Barry and Windfall deposits.
Combined with Megastar’s Helicopter-borne VTEM (Versatile Time Domain ElectroMagnetic) and
MAG survey flown in 2008, the interpretation of DeepRock’s new 2019 survey has permitted
DeepRock Minerals a high level of confidence in four priority 2020 exploration targets.
The first target corresponds to a high magnetic anomaly coincident with a good conductor, on
strike with a known Cu-Zn-Ag showing. The second target corresponds to a folded magnetic axis
coupled to a good conductor running parallel. Targets 3 and 4 are two other magnetic anomalies
which present non -conventional aspects and were detected in proximity of a known Copper -
silver showing.
These new results show a net improvement in the interpretatio n of the geology of the Ralleau
Project, and of the structures and presence of zones with an economic potential. This detailed
high resolution heliborne magnetic survey also highlighted some posterior structures which could
be gold bearing. Several gold deposits hosted within the Urban-Barry Belt are associated with a
set of NE faults included into a NNE couloir. This deformation event is accompanied by a
magmatic event represented by QFP dykes dated 2697 Ma. These intrusions are closely related
to the mineralization and appear to have acted as rheological anisotropies promoting
fracturation, hydrothermal brecciation and sulfides precipitation. Characteristics of the different
showings point toward orogenic-type mineralization.
DeepRock intends to verify the four priority targets on the ground by carrying out till sampling
and IP survey programs. This will be followed by stripping and t renching in preparation of an
aggressive diamond drilling program.
The strongest magnetic anomaly occurs in the southeastern area of the survey block. It seems to
be located at the hinge of a fold, which possibly favored the thickening of magnetite or pyrrhotite
rich units, creating a locally larger vol ume of magnetic rocks. In several areas, strings of
alternating series of magnetic highs and lows aligned longitudinal to t he general lineaments’
trends occur. This type of feature possibly belongs to mafic intrusive or volcanic rocks affected
by boudinage effects which could explain the alternating sequence of magnetic highs and lows.
Prospectair from Gatineau, Quebec and Dynamic Discovery Geoscience of Ottawa, Ontario
performed the survey and provided the detailed interpretation.
Page 2 of 3 | DeepRock Minerals Inc. | #500, 666 Burrard Street, Vancouver, BC Canada V6C 3P6
The Ralleau Project was flown with traverse lines at close 50 m spacings and control lines spaced
every 500 m. The survey lines were oriented N015. The control lines were oriented perpendicular
to traverse lines. The average height above ground of the helicopter was only 39 m and the
magnetic sensor was at an even lower 18 m. The survey coverage was a total of 733 linear-km.
Data compilation including editing and filtering, quality control, and final data processing was
performed by Joël Dubé, P.Eng.. Processing was performed on high performance desktop
computers optimized for quick daily QC and processing tasks.
The airborne magnetometer data, recorded at 10 Hz, was carefully plotted and checked for spikes
and noise on a flight basis. An average of 1.95 second lag correction was applied to the data to
correct for the time delay between detection and recording of the airborne data.
Ground magnetometer data was recorded at 1 sample per second and interpolated by a spline
function to 10 Hz to match airborne data. Data was inspected for cultural interference and edited
where necessary. Low-pass filtering was deemed necessary on the ground station magnetometer
data to remove minor high frequency noise. The diurnal variations were removed by subtracting
the ground magnetometer data to the airborne data and by adding back the average of the
ground magnetometer value.
Levelling corrections were performed using intersection statistics from traverse and tie lines.
After statistical levelling was considered satisfactory, de -corrugation was applied on the data to
completely remove any subtle non -geological features oriented in the direction of the traverse
lines.
Once the Total Magnetic Intensity (TMI) was gridded, its First Vertical Derivative (FVD) and
Second Vertical Derivative (SVD) were calculated to enhance narrow and shallow geological
features. Finally, the component of the normal Earth’s magnetic field, described by the
International Geomagnetic Reference Field (IGRF), was then removed from the TMI to yield the
residual TMI.
In order to enhance the subtle magnetic features further, the Tilt Angle Derivative (TILT) was also
computed for this project.
It has been shown that it is possible to use the Tilt Angle Derivative to estimate both the location
and depth of magnetic sources.
Most of the surveyed area is affected by strong linear magnetic feature s characteristic of
alternating sequences of mafic volcanic rocks with sedimentary or intermediate to felsic volcanic
rocks, with possibly some small size intrusive stocks or dykes locally. Areas with lower background
values and decreased signal variabilit y are likely to be dominated by sedimentary or felsic
intrusive/volcanic rocks.
Page 3 of 3 | DeepRock Minerals Inc. | #500, 666 Burrard Street, Vancouver, BC Canada V6C 3P6
Most of the magnetic lineaments found in the survey block are generally trending from E -W to
NW-SE, except in areas where lineaments are clearly curved, and even heavily folded locally,
attesting that the area underwent strong deformation events in the past.
In some areas, it is possible to detect structural features offsetting observed magnetic lineaments
and causing abrupt interruption or changes of the magnetic response s. These features are
typically caused by faults, fractures and shear zones.
Dr. Christian Derosier, P.Geo., D.Sc., is the qualified person (QP) as defined in National Instrument
43-101 and, acting on behalf of DeepRock, has reviewed and approved the technical content of
this news release.
About DeepRock Minerals Inc.
DeepRock Minerals is a dynamic Canadian mineral exploration company headquartered in
Vancouver, British Columbia. DeepRock’s primary focus is in acquiring and developing prime
North American gold and VMS type exploration/development mining projects; as well as
existing processing and producing mining operations of merit. DeepRock Minerals is managed
by an experienced team of mining and business professionals with more than 150 years of
combined extensive operating and financial experience and expertise. The shares of DeepRock
Minerals Inc. trade on the Canadian Securities Exchange (CSE) under the trading symbol
“DEEP”.
Should you have any questions please feel free to contact the undersigned at any time at
ON BEHALF OF THE BOARD OF DIRECTORS OF DEEPROCK MINERALS LIMITED
Patrick D. O’Brien, ICD.D, MIoD
Director, CEO
Cautionary Note Regarding Forward-Looking Statements:
Neither the Canadian Stock Exchange nor its Regulation Services Provider accepts responsibility for the adequacy or
accuracy of this release. This news release contains "forward-looking information" including statements with respect
to the future exploration performance of the Company. This forward-looking information involves known and
unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of
the Company to be materially different from any future results, performance or achievements of the Company,
expressed or implied by such forward -looking statements. These risks, as well as others, are disclosed within the
Company's filing on SEDAR, which investors are encouraged to review prior to any transaction involving the
securities of the Com pany. Forward -looking information contained herein is provided as of the date of this news
release and the Company disclaims any obligation, other than as required by law, to update any forward -looking
information for any reason. There can be no assurance that forward-looking information will prove to be accurate
and the reader is cautioned not to place undue reliance on such forward -looking information.