Castillian Resources Corp.
TSX VENTURE : CT

Castillian Resources Corp.

April 27, 2011 07:00 ET

Castillian Intersects 11.44 Grams Gold Per Tonne Over 29.2 Metres in Mine Zone Extension at Hope Brook Project, Newfoundland

Drilling Confirms Mine Zone Is Open Downdip and On-Strike Below Old Mine

TORONTO, ONTARIO--(Marketwire - April 27, 2011) -Castillian Resources Corporation ("Castillian" or the "Company") (TSX VENTURE:CT) is pleased to report further drill results of the downdip extension of the Mine Zone. Drill Hole HB11-023 intersected strongly silicified mineralization from 417.0m to 446.20m (vertical depth of approximately 350m) and returned 11.44 g Au/t (2.50 g Au/t with highs cut to 30 g/t) and 0.52% Cu over 29.2m core length (21.9m true width). This includes a very high grade zone of 54.26 g Au/t (10.03 g Au/t cut) and 2.35% Cu over 5.9m core length (4.4m true width) (Table 1).

The intersection in Hole HB11-023 is approximately 50m northeast of Hole HB10-008 which as previously reported (see press release dated January 21, 2011) intersected 3.17 g Au/t and 0.91% Cu over 9.90 m (6.0 m true width) within a broad zone of mineralization grading 1.08 g Au/t and 0.22 % Cu over 69.10m core length (41.6m true width). This hole intersected the Mine Zone approximately 50m southwest of the 4800 level.

Dr. Bill Pearson, P.Geo., President & CEO of Castillian, commented: "We have now completed a series of holes across the full 500m strike length below the historic workings. These holes have confirmed that the Mine Zone is open downdip and along strike. Furthermore most of the deeper historic holes appear not to have been drilled long enough to fully test the target zone and hence the Mine Zone potential remains wide open. During 2011 we will be drilling additional step-out holes both downdip and along strike to further test this potential."

Hole HB11-023 tested the downdip extension of the Mine Zone below the 4800 level, which was the lowest level previously mined at approximately 340m below surface as shown in Figure 1, a longitudinal section. Figure 2 is a geological cross section showing this new hole.

Drilling of the downdip extension of the Pit Zone is continuing using the track mounted diamond drill. To date an additional 8 holes totaling 1446.0m have been completed in this zone with assay results for these holes pending as shown in Table 1. This drilling is designed to provide data for a National Instrument 43-101 resource estimate which the Company expects to be prepared later in 2011.

Table 1: Summary of Significant Drilling Results, Hope Brook Gold Project, April 27, 2011
Hole(i)From
(m)
To
(m)
Core
Length
(m)
True
Width
(m)
Gold
(g/t)
Gold
(highs
cut to
30 g/t)
Copper
(%)
Zone
Mine Zone
HB11-023417.00446.2029.2021.911.442.500.52MZ
incl.440.30446.205.904.454.2610.032.35MZ
HB11-026assays pendingHW/MZ
Pit Zone
HB11-018assays pendingPZ
HB11-019assays pendingPZ
HB11-020hole abandonedPZ
HB11-021assays pendingPZ
HB11-022assays pendingPZ
HB11-024assays pendingPZ
HB11-025assays pendingPZ
HB11-029assays pendingPZ
HB11-030assays pendingPZ
(i)Main zone hole is NQ core size; Pit Zone holes are BTW core size
(ii) Horizontal width which is shown for historical longitudinal sections in Figure 1 is very close to true width.
(iii)PZ = Pit Zone, HWZ = Hangingwall Zone and MZ = Mine Zone
incl. = including; tr = trace
Table 2: Collar Coordinates and Orientations of Drill Holes, Hope Brook Gold Project, April 27, 2011
HoleUTMMine Grid
HoleEastingNorthingEastingNorthingElev.
(i)
LengthAz
(ii)
Dip
(ii)
HB11-01841775452875571120350245110108.2325-45
HB11-01941779052875001120049565116210.0325-48
HB11-020Hole abandoned
HB11-02141780452875681125050055111157.5325-50
HB11-02241783252876141130050265112192.9325-45
HB11-02341822552876391166048165151660.5320-65
HB11-02441784152876031130250095107178318-65
HB11-02541789352876141135149895105180.7325-47
HB11-02641824952877131169948665143476.7322-59
HB11-02741824952877131169948665143455.4
(still drilling)
322-67
HB11-02941794652876271140149695105204.4325-45
HB11-03041790052876571138150205109214.3345-45
HB11-0314179815287578114024909511082.1
(still drilling)
325-48
(i)Elevations have 5000 m added to actual measurements to conform to historical practice.
(ii)All measurements are in metres except Azimuth (Az) and Dip which are measured in degrees.

SAMPLING, ASSAYING AND QUALITY CONTROL

The core (NQ 47.6 mm and BTW 42.0 mm) is logged, photographed and then sawn in half with one-half sent to the laboratory for analysis and the other half retained and stored on site. All core samples were prepared and assayed at ALS Chemex with sample preparation done in Sudbury and analytical work in Vancouver. All locations of ALS Chemex are ISO 9001:2000 certified. The entire sample received is weighed and crushed to ≥ 70% passing 2mm (10 mesh); a sample split of up to 1000g is then pulverized to ≥ 85% passing 75 microns (200 mesh) to produce a homogenized sample. A 50g aliquot is used for fire assaying with an atomic absorption (AA) finish to determine gold concentration. Internal quality control includes the use of blanks, duplicates and standards in every batch of samples. The Company also conducts internal check assaying using certified external reference standards and blanks. Regular external check assays are performed at a second certified Canadian commercial laboratory. Castillian also inserts external reference standards as well as blank granite drill core in each sample batch as a further external check.

Mr. Dan Lee, P.Geo. Chief Geologist and Project Manager for Hope Brook and Dr. Bill Pearson, P.Geo., President and CEO of Castillian, both of whom are qualified persons as defined by National Instrument 43-101 ("NI 43-101"), have reviewed and approved the scientific and technical content of this press release.

ABOUT CASTILLIAN

Castillian Resources Corp. is a Canadian mineral exploration company listed on the TSX Venture Exchange under the symbol "CT" which has gold and base metal properties in Canada and South America. Castillian's flag ship property is the Hope Brook Gold Project located in southwestern Newfoundland where it is carrying out a 15,000 metre diamond drill program.

Cautionary Note Regarding Forward-looking Information

This press release contains "forward-looking information" within the meaning of applicable Canadian securities legislation. Forward-looking information includes, but is not limited to, statements with respect to the diamond drill program at the Hope Brook project and its anticipated results, the exploration program and anticipating timing and costs with respect to the exploration program and the completion of a NI 43-101 compliant resource estimate, future financial or operating performance of the Company, its subsidiaries and its projects, statements regarding exploration prospects, the identification of mineral reserves and resources, exploration expenditures, timing of future exploration, requirements for additional capital. Generally, forward-looking information can be identified by the use of forward-looking terminology such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved". Forward-looking information is subject to known and unknown risks, uncertainties and other factors that may cause the actual results, level of activity, performance or achievements of the Company to be materially different from those expressed or implied by such forward-looking information, including but not limited to: general business, economic, competitive, political and social uncertainties; the actual results of current exploration activities; future prices of mineral prices; failure of plant, equipment or processes to operate as anticipated; accidents, labour disputes and shortages and other risks of the mining industry. Although the Company has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking information, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that such information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking information. The Company does not undertake to update any forward-looking information, except in accordance with applicable securities laws.

To view the first figure associated with this release, please visit the following link: http://media3.marketwire.com/docs/ct0427fig1.pdf.

To view the second figure associated with this release, please visit the following link: http://media3.marketwire.com/docs/ct0427fig2.pdf.

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