DIOS: Drilling Results on Shipshaw Carbonatite Complex
01 Dezembro 2011 - 1:00PM
Marketwired
DIOS EXPLORATION (TSX VENTURE:DOS) completed a drilling program in
the Shipshaw area, Saguenay, Quebec, on its wholly-owned SHIPSHAW
niobium-rare earths project. IOS Services Geoscientifiques of
Saguenay provided a complete detailed report from this program last
week. Also, a few additional holes were drilled later this summer,
results pending: a wholly new hematized carbonatite breccia? zone
was discovered while drilling the Falardeau anomaly a few km
northeast of the St-Honore carbonatite. Further drilling is planned
later in the year.
Four drill holes returned metric size intercepts grading up to
0.251 %, 0.188 %, 0.177 %, 0.15 % Nb2O5, respectively, on SHIPSHAW.
Several holes returned several intercepts grading 0.304 % to 0.442
% in rare earth elements (RRE) from one to sixteen m large
intercepts. Also, a carbonatite outcrop was discovered and returned
7.5 m grading 0.36% rare earth element (REE) (incl. 0.582 % RRE
over 1 m). Other track sampling returned one meter intercepts with
0.4% REE and 0.055 % and 0.04 % Nb2O5. Eleven grab samples returned
values up to 0.071 % Nb2O5 and 0.525 % RRE.
The drill holes aimed at checking several concentric magnetic
anomalies in the vicinities of a carbonatite occurrence. These
anomalies were selected from the processing of an helicopter-borne
magnetic survey carried out by Geodata Solutions and they are
located about 4 kilometers south-southwest from the St-Honore
carbonatitic complex. The Shipshaw anomaly is located in an area
characterized by thick clay-rich overburden known as the terres
rompues, is located within a paleo-depression along the Saguenay
River. Nineteen (19) drill holes were completed in the northern and
central parts of the geophysical anomaly. The Shipshaw anomaly is a
particularly interesting target for niobium and rare-earths in
reason of its size, proximity and similarities with the
aeromagnetic anomaly associated with the world-class St-Honore
niobium deposit.
DIOS commissioned IOS Services Geoscientifiques for the
supervision, core-logging and sampling of the drilling program;
planning was undertaken by DIOS. Drilling work was commissioned to
a local area diamond drilling firm. A total of 19 NQ-size holes for
4518.6 meters were diamond drilled during the 2011 Shipshaw program
and 33 average metric size samples returned values over 0.05 % up
to 0.251% Nb2O5 (one 6.55 m sample returned 0.05 % Nb2O5) with
assays by XRF at Actlabs.
Following Dr. M. Marino's recommendations concerning the 2010
aeromagnetic survey, a new strategy based on the usual magnetic
signature of most known deposits was applied as primary
carbonatites (mainly hydrothermal sovites) contain important
magnetite concentrations derived from CO2-rich and salts-poor
fluids. The interpretation of the geophysical data outlined
numerous northsouth or northnorthwest striking magnetic lineaments,
as well as circle-arcs crests. These signatures may be coincidental
with carbonatitic dykes or cone-sheets. The same strike was also
observed on decimetric-metric carbonatite dykes in nearby outcrops
(along Aux Vases River).
To test this hypothesis, 18 of the 19 drill holes tested these
magnetic anomalies. The orientation of the holes was perpendicular
to the radial anomalies. Supposing that the anomalies are
cone-sheeted dykes, the dip should be toward the inside of the
anomaly and therefore the drilling should be directed toward the
outside of the concentric structure. The last drill hole (#773-23)
was planned to be 450 m long, but was stopped at 354 m due to
technical problems. It aimed at fully testing the system of
magnetic anomalies and possible carbonatite dykes: from the center
of the low mag toward its margin, and going along the way through a
high mag lineament at depth.
Also, sampling and track-sampling was completed on carbonatite
outcrops along Des Vases River. These outcrops do have an extent
over a 100 meter length by 15-20 meter width. They are
characterized by strong fracturing and hematization as well as
local breccias. Multiple-generations of carbonatite dykes with
several orientations were observed.
The Shipshaw Carbonatite Complex is located a few kilometers
away from the Niobec mine, Saguenay area, Quebec, in operation for
over thirty years. New areas of the Shipshaw Complex remained to be
tested and also at depth as well as new potential carbonatite
targets surrounding the Niobec mine and defined by recent research
work on DIOS wholly-owned claims. The first definition drilling
phase to understand the geology of the Shipshaw Complex aimed at
testing part of the Complex to a depth of 125-150 m. The Niobec
mine is located 300 feet (90 m) at vertical depth from surface,
covered by 240 feet of Trenton limestone, and developments now
reach 2,400 feet.
The technical content of this press release was prepared by M.J.
Girard, M.Sc., P.Geo, a Qualified Person pursuant to National
Instrument 43-101.
Neither the TSX Venture Exchange nor its Regulation Services
Provider (as that term is defined in the policies of the TSX
Venture Exchange) accepts responsibility for the adequacy or
accuracy of this release.
Contacts: Marie-Jose Girard, M.Sc. Geo, President (514) 483-5149
(514) 510-7964 (FAX)mjgirard@diosexplo.comwww.diosexplo.com
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