Mawson Resources Ltd : Mawson Discovers Further Mineralization at Rompas in Finland with Pit Samples Assaying up to 557ppm Gold
02/06/2012 | 10:42am
February 06, 2012
Mawson Discovers Further Mineralization at Rompas in Finland
with Pit Samples Assaying up to 557ppm Gold
Vancouver, Canada -- Mawson Resources Limited
("Mawson") TSX -- MAW; Frankfurt -- MRY. Mr Michael
Hudson, President & CEO, announces new results from the 2011
exploration program at the Company's 100% owned Rompas
project in northern Finland.
Key points include:
-
A new zone of mineralization defined under thicker
glacial soil with grab samples from individual one metre
deep pits assaying 557ppm, 147ppm and 201ppm gold within a
zone extending over a 30 metre strike;
-
Continuity of lower grade gold and uranium
mineralization further established, highlighting
mineralized trends;
-
New geophysics demonstrates gold mineralization is
hosted by a chargeable sequence which extends under cover
away from known gold bearing areas.
-
Further bonanza gold grades from grab samples assay up
to 33,200ppm gold.
A new zone of mineralization has been defined late in the field
season at the southern extension of North Rompas under thin
glacial till. Grab samples taken from three separate one metre
deep (hand dug) pits returned 557ppm Au & 0.8% U3O8, 147ppm Au
& 36.8% U3O8 and 201ppm Au & 0.1% U3O8 within a zone extending
along strike over 30 metres under thin cover (Figure 1). Due to
the thicker till in the area only one metre hand dug pits were
able to access the weathered bedrock zones which were
subsequently grab sampled. One additional grab sample,
interpreted to be located 20m to the north in a parallel
structure assayed 7,630ppm Au and 22.4% U3O8 (Figure 1).
Importantly, in the southern extension of North Rompas,
continuity of lower grade mineralization has been demonstrated
over an area of 110 metres along strike and 90 metres width
(Figure 1). Extent of known mineralization is only limited by
thick soil cover where bedrock cannot be reached by radiometry
nor hand digging due to current permit restrictions. The new
zone is located 300m south of the northern extension of North
Rompas zone where continuity was previously established between
mineralized zones (Figure 1), as reported in the Mawson press
release dated
31 October, 2011.
One grab sample at South Rompas, located 4.6km to the south,
returned 33,200ppm Au and 56.6% U3O8 (Figure 2), which to date
represents the highest grade sample yet taken at Rompas. This
sample was taken from a boudin in a vein that occurs within the
known extent of mineralization. Grab samples are selective by
nature and are unlikely to represent average grades on the
property.
In addition, Mawson recently completed a 22 line km gradient
array IP geophysical survey at North and South Rompas. This
survey highlighted a chargeable host sequence that correlates
with mineralized areas in both North and South Rompas. The
chargeable sequence is far more extensive under areas of
shallow till and soil cover that are too deep to be tested by
surface sampling (Figures 1 and 2).
Mr Hudson states: "Rompas continues to deliver with grade,
continuity and scale. Further discoveries and evidence for
continuity of mineralization at surface over considerable
distances augurs well for the prospectivity of this exciting
new mineral district. Additionally, the recent IP geophysical
survey clearly highlights the host sequence at Rompas. The
chargeable sequence is shown to continue extensively undercover
away from areas where high grade gold and uranium discoveries
have been made."
The Rompas mineral system is hosted by metabasalt, dolomite,
calc-silicate, dolerite and volcaniclastics, all part of the
Palaeoproterozoic Perapohja Schist Belt. These rocks have
undergone at least two major deformation events, leading to a
locally strong schistosity (oriented 320-340 degrees) and
metamorphism up to amphibolite-grade resulting in
diopside-tremolite-actinolite assemblages in the calc-silicate
rocks.
Gold and uranium mineralization at Rompas is hosted by a
quartz-calc-silicate vein array and related alteration
selvages. The calc-silicate veins
(amphibole-pyroxene-quartz-carbonate ±gold, uraninite) and
alteration selvages (biotite-amphibole-K-feldspar) have been
metamorphosed to amphibolite facies, following a structural
episode of flattening within high strain zones. It is
interpreted that the veins are an early (pre-structuring) vein
array, but that the bonanza-grade mineralization is likely a
result of the structuring and metamorphism. Interestingly,
lower grade gold (1-20ppm Au) with weakly anomalous uranium
(1-40ppm U) is known to occur outside the high-grade pods, but
still within the veins and/or alteration selvages. The
spectacular bonanza gold and uranium grades are generally
contained in pods of calcite and amphibole, often associated
with boudinaged "ladder veins" within the more
extensive vein system, indicating they could be local upgraded
remobilizations from the veins.
Due to the lack of detailed work that has been done on this
relatively new discovery, little is understood about the nature
of the mineralizing controls. In any event, it would appear
that the exploration target is a large, bulk-tonnage vein
system that may be genetically related to a granitoid complex
that occurs a few kilometers to the north of the property. The
possibility of finding potentially economic high grade vein
structures must also be considered.
Mawson holds 833 claims and claim applications for 75,340
hectares at the Rompas Project. A total of 110 exploration
claims that cover a surface area of 10,580 hectares and form
the core claims at Rompas were granted on October 31, 2010 but
do not come into legal force until after a standard appeal
process. Therefore sampling, to date, has been restricted to
low impact digging and trenching by hand through soil to access
bedrock for diamond saw channel and grab sampling.
Mawson samples were prepared by ALS Chemex Ltd's laboratory
in Pitea, Sweden and analyzed by Au-ICP21, ME-MS41u, PGM-ICP27
and ME-MS61u techniques by ALS Chemex Ltd's laboratory in
Vancouver, Canada and Saskatchewan Research Council using
standard ICP partial and full digestion and fire assay methods.
The qualified person for Mawson's Finnish projects, Mr
Terry Lees, VP Exploration for Mawson and Fellow of the
Australian Institute of Geoscientists has reviewed and verified
the contents of this release.
Shares Outstanding: 51,680,753; Cash: approximately C$9.5
million.
On behalf of the Board,
"Michael Hudson"
Michael Hudson, President & CEO
Investor Information
www.mawsonresources.com
1305 - 1090 West Georgia St., Vancouver, BC, V6E 3V7
Company Contact: Mariana Bermudez +1 (604) 685 9316
Investor Relation Consultants - Mining Interactive
Nick Nicolaas+1 (604) 657 4058
Email:
info@mawsonresources.com
Forward Looking Statement. The statements herein that are not
historical facts are forward-looking statements. These
statements address future events and conditions and so involve
inherent risks and uncertainties, as disclosed under the
heading "Risk Factors" in the company's periodic
filings with Canadian securities regulators. Actual results
could differ from those currently projected. The Company does
not assume the obligation to update any forward-looking
statement. The TSX Exchange has not reviewed and does not
accept responsibility for the adequacy or accuracy of this
release.
