Castillian Resources Corp.

Castillian Resources Corp.

November 29, 2007 08:00 ET

Castillian Intersects 17.45 Metres Grading 0.82% Ni, 0.57% Cu Including 6.63 Metres Grading 1.50% Ni, 1.03% Cu, 0.73 g/t Pt, 0.38 g/t Pd at the Las Aguilas East Deposit, Argentina

TORONTO, ONTARIO--(Marketwire - Nov. 29, 2007) - Castillian Resources Corporation (TSX VENTURE:CT) announces additional assay results from the drilling campaign at the Las Aguilas East nickel-copper-PGE deposit. Drill holes LA07-28 and LA07-29 intersected thick intervals of mineralization. Hole number LA07-28 intersected 17.45 metres grading 0.82% nickel, 0.57% copper, 0.05% cobalt, 0.44 g/t Pt, 0.20 g/t Pd. Hole number LA07-29 intersected 17.03 metres grading 0.60% nickel, 0.35% copper, 0.02% cobalt, 1.16 g/t Pt, 0.45 g/t Pd, 0.21 g/t Au. High platinum (Pt) values were obtained in both LA07-028 and 029 and include the following:

0.63 metres grading 6.60 g/t Pt, 0.29 g/t Pd, 0.99 % Ni and 0.54% Cu in LA07-028

2.72 metres grading 4.53g/t Pt, 0.51 g/t Pd, 0.82% Ni and 0.35% Cu, in LA07-029;

including 0.73 metres grading 15.1 g/t Pt, 0.30 g/t Pd.

According to Danielle Giovenazzo, PhD, P. Geo., the Exploration Manager for the Project, "We are very encouraged by these results. In the East Deposit we continue to intersect impressive thicknesses of good grade mineralization and we are locally identifying very high grade platinum values. This mineralization remains open and there are numerous drill holes with assays pending."

Drill hole LA07-30 did not intersect significant mineralization as it was outside of the mineralized zone. Complete assays for the three holes are listed in Table 1 below.

The Las Aguilas East deposit is associated with olivine pyroxenites and peridotites in a 100 metre thick variably differentiated ultramafic intrusion. These are typical rock types associated with major nickel deposits world wide. The mineralized zone has now been outlined for more than 175 metres along strike and down to 200 metre depth. The zone remains open (see Figure 1).

The ongoing drill program is designed expand both the Las Aguilas East and West Ni-Cu-PGE deposits and provide data required to complete a NI-43-101 compliant resource estimate that includes assays for platinum group elements (PGE) which were not systematically analysed by previous explorers. The occurrence of significant platinum, palladium and gold values in addition to high nickel and copper in holes LA07-28 and 029 suggests that precious metals may provide a significant contribution to the value of the deposit.

Since the program started in early July a total of 60 drill holes totalling 9,300 meters of drilling have been completed of which assay results have only been received for 31 drill holes. Twenty nine (29) drill holes have assays pending and these will be reported on a continual basis as the data is received. The project is on track and it is expected that an initial, independent, NI 43-101 compliant resource estimate will be completed by the end of January. Turn around time for assay results has been much longer than expected due to high volumes at the laboratories, so it is possible completion of the resource estimate could be delayed for several weeks due to pending assay results. It is probable that the deposit will not be closed off at the end of this drill campaign.

The Las Aguilas East and West Deposits contain a historical resource estimate of 2.2 million tonnes grading 0.52 % Ni, 0.51 % Cu and 0.04 % Co at a 0.3% Ni cut-off grade. The resource occurs in two sulfide deposits (Las Aguilas East and West Deposits), as defined by Fabricaciones Militares in 1986, which intermittently carried out various geological, geophysical and surface drilling exploration campaigns from 1972 until 1986. This resource estimate has not been confirmed by Castillian and predates the establishment of NI 43-101 standards and is provided for information only.

Quality Control

The company employs a diligent QA/QC protocol on all aspects of the analytical procedures. Core samples are sawn and one half of the NQ core is restored to the core box for future reference and one half of the core is sent for analysis. Samples are taken in approx. 1.0 -metre intervals or less when in the mineralized zone, and at 1.5 metres or less when in disseminated sulphides (less than 2% sulphides). Sample preparation is completed at the ALS-Chemex lab preparation lab in Mendoza, Argentina and assayed at ALS-Chemex lab in Vancouver, Canada, using multi-acid digest/ ICP-AES for the base metals and A.A. when Ni and Cu are over the detection limits. Platinum, palladium and gold values are determined by 30 gram fire assay with ICP-AES finish. A blank sample is inserted every 40th sample and standard samples representing a range of grades are inserted at intervals of 1 in 20 to 30 samples.

The quality control and all aspects of the exploration program are supervised by Castillian exploration managers, Danielle Giovenazzo, Ph.D., PGeo, and Fernando Tallarico, Ph.D., PGeo, both of whom meet the criteria for a qualified person as defined under National Instrument 43-101.

David Gower, PGeo, President and Chief Executive Officer of Castillian, who is a qualified person as defined by NI 43-101, has reviewed this release.

About Castillan Resources

Castillian Resources Corp. is a Canadian mineral exploration company listed on the TSX Venture Exchange under the symbol "CT" with approximately 87.8 million shares issued and outstanding. Castillian has partnered with Xstrata Nickel to explore the approximately 153,000 ha Mangabal nickel-copper project in Brazil. The company is earning an interest in the Las Aguilas Nickel-Copper-PGM Project in Argentina from Marifil Mines Ltd. and has the right to purchase a 100% interest in the Kagera Project which comprises over 1,600 square kilometers in the highly mineralized Kabanga Nickel Belt in Tanzania and rights to acquire 90% of the Pederson deposit, an advanced gold exploration project in Bolivia which is currently under force majeure.

Forward Looking Statements

This document may contain or refer to forward looking information based on current expectations, including, but not limited to, mineralization projections, estimates regarding the timing for resource modeling and the preparation of a 43-101 compliant technical report. Forward-looking statements are subject to significant risks and uncertainties, and other factors that could cause actual results to differ materially from expected results. These forward-looking statements are made as of the date hereof and we assume no responsibility to update or revise them to reflect new events or circumstances.

Table 1: Mineralized intercepts from the Las Aguilas West Deposit. Width in the table represents core length of the intersections, true width is expected to be 70% or more of the core width.

CT From To Width Ni% Cu% Co% Pt ppm Pd ppm Au ppm
LA07-028 72.48 78.04 5.56 0.45 0.38 0.02 0.61 0.59 0.35
81.65 88.45 6.80 0.42 0.19 0.02 0.44 0.27 0.04
104.2 121.65 17.45 0.82 0.57 0.05 0.44 0.20 0.09
including 108.7 115.33 6.63 1.50 1.04 0.08 0.73 0.38 0.16
including 114.7 115.33 0.63 1.09 0.54 0.06 6.66 0.29 0.06
LA07-029 100.72 117.75 17.03 0.60 0.35 0.02 1.16 0.45 0.21
Including 104.6 107.35 2.75 0.86 0.35 0.03 4.55 0.51 0.08
Including 106.6 107.35 0.75 1.03 0.20 0.04 15.10 0.30 0.07
Including 111.04 112.68 1.64 0.55 0.67 0.02 1.70 0.40 0.36
138.62 140.38 1.76 0.49 0.20 0.02 0.18 0.28 0.04
LA07-030 No mineralization

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To view Figure 2, please visit the following link:

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