Tosca Encounters Strong Molybdenum and Copper Mineralization at Red Hills, Texas
08 September 2011 - 3:00PM
Business Wire
Tosca Mining Corporation, (TSQ.V; US:TSMNF; FSE:TQ4) (Pink
Sheets: TSMNF), announces that it has received assay results
for seven holes (TMC-8 to TMC-14) from the 2,865 metre (9,400 ft.)
phase 1 diamond drill program carried out at the Red Hills
Molybdenum-Copper project, located in Presidio, County, Texas.
Results of the remaining four holes are pending.
The results of the seven holes are summarized below and their
location is shown in the accompanying drill plan. All holes are
vertical except for TMC-8 (-60°, 265° azimuth).
Hole
Length (ft)
From (ft)
To (ft)
Interval (ft)
Interval° (m)
CU % Mo % TMC-8
1,400 65
240 175 53.3
0.21 0.043 240 280 40 12.2 0.26
280
930 650
198.1 0.074 TMC-9
269 0 80 80 24.4 0.32 0.044
0 269
264 80.5 0.15
0.057 TMS-10 220 45 150 105 32.0 0.32 0.04
150
220 70 21.3
0.088 TMC-11
349 125
310 185 56.4
0.80 0.067 TMC-12 1129 15
105 90 27.4 0.16 0.056
175 1129
954 290.8
0.071 TMC-13 189
15 140 125
38.1 0.21
0.05 TMC-14 1169 10 700 690 210.3 0.085 Includes 50 400 350 107.7
0.098 700 979 279 85 0.058
979 1169
190 57.9
0.031
The results of the shallow holes (TMC 9, 10, 11 and 13)
corroborate the presence of a copper blanket with accompanying
molybdenum mineralization located immediately below the oxide
zone. The grades range from 0.21% Cu and
0.05% Mo over 38.1 m (125ft) in hole TMC-13 to 0.80% Cu and 0.067%
Mo over 56.4 m(185ft) in hole TMC-11. The grades and
thicknesses encountered to date in the 2011 drill program are
generally comparable to those found in adjoining historic
holes.
The deep holes (TMC-8, 12 and 14) point to the existence of a
deep molybdenum porphyry characterized by wide, well
mineralized intercepts: 198.1 m (650ft) of
0.074% Mo in hole TMC-8, 290.8 m (954ft) of 0.071% Mo in hole
TMC-12 and 210.3 m (690ft) of 0.085% Mo in hole TMC-14. The
distribution of molybdenum grades within the Red Hills deposit is
very homogeneous over significant widths due to dense stockwork
nature of the molybdenite mineralization. Note that these three
holes are either new holes (TMC-08) or holes that deepened previous
shallow holes (TMC-12 and 14). Hence they will expand the historic
data base.
The results from these seven holes are "very encouraging" quotes
Dr. Sadek El-Alfy, CEO. “They demonstrate and verify the continuity
of the shallow copper-molybdenum blanket and indicate that we are
on our way toward the confirmation of a large molybdenum deposit.
As a term of reference, the grades of the molybdenum porphyry
projects currently considered of potential economic interest are in
the 0.06% to 0.10 % Mo range.“
As described in the Company's news release dated March 2, 2011,
the Red Hills project consists of a large molybdenum porphyry
system overlain a by a copper (chalcocite) enrichment blanket
developed below the oxide-sulphide transition zone. Eighty eight
holes were drilled on the property between 1955 and 1972. This work
led to the identification of a non-43-101 compliant resource of 17
million tons grading 0.35 Cu% with associated molybdenum
mineralization in the shallow copper blanket. The previous activity
also led to the discovery of a linear trend of high grade copper
mineralization defined by three vertical holes which included 33.55
metres (110ft) of 9.09 % Cu. Based on historic drilling, the
molybdenum mineralization occurs within a horseshoe shaped area
measuring 1,000 m x 200 m (3280ft x 656ft) and is open in two
directions and at depth. Although many of the holes drilled in the
molybdenum system were stopped in mineralization at shallow depths,
the deeper holes were mineralized throughout (e.g. hole Duval 07,
was 642 meters(2100ft) of 0.076% Mo).
Drilling and QA/QC
The drilling was carried out by Ruen Drilling of Idaho, using a
wire-line rig and NQ core recovery. The core boxes are transported
to Marfa, Texas, where Tosca maintains a secure office/warehouse
facility. The core undergoes geotechnical and geological logging by
Tosca geologists. Sample intervals are designated and the core is
split in half using a rock saw. Half of the core is left in the
boxes and the other half is bagged and shipped to Skyline Assayers
and Laboratories (“Skyline) in Tucson, Arizona to be analyzed for
Cu and Mo using ICP/OES. Skyline is an ISO/17025 accredited
laboratory. Skyline monitors quality control through the
introduction of blanks, standards and duplicates. In addition,
Tosca’s employees routinely insert blanks and standards in the
sample stream.
Luca Riccio, PhD, P.Geo, a qualified person as defined by NI
43-101 is responsible for the technical information contained in
this release.
On Behalf of the board of directors,"Ron Shenton"
For further information, please visit the company's website at
www.toscamining.com or call 604-687-6562. Email
info@toscamining.com
This News Release may contain forward-looking statements
including but not limited to comments regarding the timing and
content of upcoming work programs, geological interpretations,
receipt of property titles, potential mineral recovery processes,
etc. Forward-looking statements address future events and
conditions and therefore involve inherent risks and uncertainties.
Actual results may differ materially from those currently
anticipated in such statements. Tosca Mining Corp. relies upon
litigation protection for forward looking statements.
The TSX Venture Exchange (TSX Venture) has not reviewed and does
not accept responsibility for the adequacy or accuracy of the
contents of this news release, which has been prepared by
management.
To view this map associated with this release, please click on
the following link:
http://www.usetdas.com/maps/tosca/toscamap09082011002.gif.
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