Ascendant Copper Corporation
TSX : ACX
TSX : ACX.WT
FRANKFURT : A5C
BERLIN : A0HMLE
TSX : ACX.WT.A

Ascendant Copper Corporation

September 12, 2007 08:30 ET

Ascendant Copper Announces New Drill Campaign to Define Resource at Chaucha Copper/Moly Project

DENVER, COLORADO--(Marketwire - Sept. 12, 2007) - Ascendant Copper Corporation ("Ascendant" or "the Company") (TSX:ACX)(TSX:ACX.WT)(TSX:ACX.WT.A)(BERLIN:A0HMLE)(FRANKFURT:A5C)(WKN A0HMLE) announces today that Minera Dos Rios S.A., a wholly-owned subsidiary of Ascendant, has received the final analysis from its Phase II drilling program on its Chaucha property located in Ecuador. The results from this phase of drilling were initially received in early August. However, because certain sections of drill core contained copper concentrations of greater than 1%, the samples were re-assayed in mid-August. The re-assay results subsequently confirmed the existence of + 1% copper grades.

Based on these results and prior work, Ascendant has now commenced a Phase III 5000 to 6000 meter program of additional drilling in the Naranjos sector of the Chaucha project. "The goal of our new drill program at Chaucha is to move the known mineralization into internationally recognized modern inferred and indicated resource categories," said Gary Davis, President and Chief Executive Officer of the Company. "We believe, based on historic drilling by previous owners and some of our own recent work, that this program will demonstrate a significant resource in the Naranjos zone alone." Pending the results of the planned Phase III in-fill drilling program in the Naranjos sector, the Company expects that a pre-feasibility study, incorporating both the Naranjos and Gur Gur sectors of Chaucha should commence before the end of this year.

The Naranjos mineralized zone was previously tested by a Japanese consortium and Billiton Exploration and identified an inferred copper-molybdenum resource as estimated by Billiton in 1998. Although Ascendant believes that Billiton's historical resource estimate is reliable, it was prepared prior to the creation of the CIM Standards on Mineral Resources and Reserves Definitions and Guidelines and is not compliant with National Instrument 43-101, Standards of Disclosure for Mineral Projects ("NI43-101").

Billiton drilled five holes totaling 931 meters with one of the drillholes, Ch-03, intercepting 105 meters that graded 0.63% copper and 0.02% molybdenum. Ascendant's recently completed drilling has extended the mineralized zone to the Northwest in holes NA-11, NA-12, NA-17, and NA-18. The longest intercept in this area was in hole NA-12 where Ascendant identified 314 meters of 0.34% copper and 0.026% molybdenum, with a 16 meter interval of 0.082% molybdenum.

Hole NA-13 was drilled as a twin to earlier Japanese drilling in the center of the Naranjos zone and gave excellent duplication of copper results. NA-13 yielded 138 meters, between 74 and 212 meters, of 0.69% copper and 0.015% molybdenum, as well as cut an 8 meter section of 1.30% copper, and a second 32 meter section of 1.13% copper. Holes NA-14 & 15 were drilled to test conceptual ideas proposed by Ascendant's former joint venture partner at Chaucha and encountered no significant values.

The Chaucha property is less than 45 kilometers from the port of Balao. This represents a unique development opportunity compared to many other mineral deposits in Ecuador that face transportation challenges for supplies and concentrates.

The Chaucha property is known to have seven anomalous mineralized zones within the Janeth 1 concession area (see Figure 3). One additional mineralized zone, previously drilled by Ascendant this year, is Gur Gur. Located approximately one kilometer from the Naranjos zone, positive results were previously reported (see Figure 2) and will most likely be included in the development plan for the property.

Significant intersections of copper mineralization from the Phase II drilling program are shown in Figure 1. Due to the massive nature of the mineralization, reported widths are assumed to be true widths.



Figure 1

---------------------------------------------------------------
Chaucha Project - Naranjos Zone
Intervals of Note
---------------------------------------------------------------

NA-11 from (m) to (m) interval (m) Cu% Mo%
12 60 48 0.38 0.017
including 12 30 18 0.52
and 34 38 4 0.55
Molybdenum of
note
16 40 24 0.030

NA-12 from (m) to (m) interval (m) Cu% Mo%
30 344 314 0.34 0.026
including 32 102 70 0.40
including 32 52 20 0.46
and 228 274 46 0.47
Molybdenum of
note
92 110 18 0.028
118 134 16 0.082
166 182 16 0.058

NA-13 from (m) to (m) interval (m) Cu% Mo%
74 212 138 0.69 0.015
including 76 84 8 1.30
and 84 92 8 0.90
and 92 124 32 1.13
Molybdenum of
note
0 212 212 0.017

NA-16 from (m) to (m) interval (m) Cu% Mo%
30 176 146 0.20 0.008
Molybdenum of
note
90 108 18 0.022

NA-17 from (m) to (m) interval (m) Cu% Mo%
34 208 174 0.22 0.012
including 50 66 16 0.37

NA-18 from (m) to (m) interval (m) Cu% Mo%
30 192 162 0.25 0.02
including 30 36 6 0.40
and 98 110 12 0.45
Molybdenum of
note
30 104 74 0.031
including 30 38 8 0.061
and 44 50 6 0.04
and 98 104 6 0.052
---------------------------------------------------------------


Figure 2

--------------------------------------------------------------------------
Chaucha Project - Gur Gur Zone
Previously Reported Intervals of Note
--------------------------------------------------------------------------
GG-01 from (m) to (m) interval (m) Cu% Mo%
includes 8 168 160 0.24 0.007
includes 12 40 28 0.47 0.010
includes 74 104 30 0.27 0.005
includes 132 144 12 0.35 0.003
GG-02 40 110 70 0.39 0.008
includes 126 136 10 0.33 0.030
includes 40 76 36 0.54 0.010
GG-03 16 188 172 0.4 0.005
includes 16 70 36 0.54 0.010
includes 16 34 18 0.63 less than 0.001
and 152 188 172 0.54 less than 0.001
GG-04 22 172 150 0.28 0.003
includes 22 126 104 0.39 less than 0.001
includes 46 88 42 0.57 less than 0.001
GG-05 16 156 140 0.35 0.005
includes 16 122 106 0.39 0.003
includes 16 76 60 0.52 0.003
includes 152 156 4 0.45 less than 0.001
--------------------------------------------------------------------------


To view Figure 3 please click on the following link: http://www.ccnmatthews.com/docs/ACX_Fig3.jpg

John R. King, the Company's resident exploration and geological expert as well as a Qualified Person as defined by NI43-101, has reviewed the above statements and assay results. Mr. King confirms that quality controls and correct assay procedures were followed by the Company and these geologic observations of the samples are correct.

Ascendant Copper Corporation is a mineral exploration and development company responsibly advancing its Chaucha and Junin copper-molybdenum projects in Ecuador toward a verifiable economic base metal discovery. Ascendant has a solid mineral asset base, a diversified portfolio, proven management, and is committed to becoming a mid-tier copper producer and maintains a strategic exploration alliance in Ecuador with Rio Tinto (LSE:RTZ). The Company continues to investigate mineral properties of merit in the Americas.

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