Castillian Receives Assays from the EF-2 Target with up to 12.45% Cu and 1.58% Ni in a Grab Sample, San Luis Project, Argentina
Tue Jun 3, 7:00 AM
ca.news.finance.yahoo.com
TORONTO, ONTARIO--(Marketwire - June 3, 2008) - Castillian Resources Corporation (TSX VENTURE: CT.V) has received assay results from additional sampling of outcrop exposures of the recently discovered EF-2 mineralized zone on the San Luis project, Argentina (Figure 1). The EF-2 zone is located approximately 6.5 kilometres north northeast of the Las Aguilas deposits where Castillian is presently drilling to expand the deposits. Within this zone several samples contained very high grade nickel and copper values including:
Sample 191667 with 12.45% Cu and 1.58% Ni in a weathered pyroxenite.
Sample 191676 with 3.84% Cu and 2.15% Ni in a weathered pyroxenite.
The samples are from outcrop exposures and are a series of chipped, grab samples distributed over approximately a 55 metre by 20 metre area where surface mineralization is observed (see Figure 2 and 3). The actual dimensions of the zone are not known as the contacts are covered by overburden.
Castillian previously reported (see news release dated May 12, 2008) that a single grab sample from outcrop of the new gossan called EF-2 contained 6.71% Cu, 2.21% Ni and 0.21% Co. The sample was collected by a prospector during recent airborne follow up and, at the time, was the only sample collected at the site. Since then the mineralized exposure that is hosted within a pyroxenite intrusive rock has been mapped and sampled in detail. A total of 26 grab samples were collected from various sites distributed across the exposure and the analytical results for all samples are listed in Table 1. Of these 26 samples, 7 samples contain greater than 1% nickel and copper values (see Table 1 below).
The mineralization is characterized by secondary copper and nickel minerals, including malachite, azurite and annabergite (also called Ni bloom), distributed throughout the pyroxenite rock. Locally gossan, which is characterized by massive iron oxide minerals including hematite, goethite and magnetite, is developed. Iron oxide-rich gossans such as these commonly form as a surface weathering product of massive to semi-massive sulphide zones. Castillian interprets the secondary copper and nickel minerals to be the weathered equivalent of sulphide mineralization. The grades of secondary mineralization are typically not directly representative of the underlying sulphide mineralization but this broadly mineralized zone provides evidence of potential for a nickel-copper bearing mineralized zone at the EF-2 target. The grades of underlying sulphide mineralization, if it occurs, can only be confirmed by diamond drilling, which is now in progress. It is possible that there is a component of secondary enrichment associated with some of the higher grades. The mineralization is coincident with a series of high priority VTEM conductors that extend 400 metres north from the EF-2 Zone.
In addition, a second gossan (labelled EF-3 on Figure 2) consisting mostly of iron oxides (hematite, goethite and magnetite), was discovered approximately 330 metres north of the EF-2 area. The best result from this gossan is from sample 191688 with 0.58% Ni, 0.36% Cu, 0.589 g/t Pd, and 0.272 g/t Pt. It is not known at this time whether this is an extension of the EF-2 Zone or a separate occurrence. The remainder of the samples are compiled in Table 1.
Danielle Giovenazzo PhD, P.Geo., Exploration Manager for Castillian, states; "Drilling to test this zone has just started. We are encouraged by this mineralization as it occurs over an extensive area, within rocks that commonly host magmatic nickel sulphide deposits and based on the coincident VTEM conductors could extend 400 metres along strike. We will not know the true potential of this zone until we drill below the weathered rocks and can sample unweathered sulphide mineralization, however this is a very exciting target."
The Project is an option joint venture with Marifil Mines Limited (TSX VENTURE: MFM.V).
----------------------------------------------------------------------------
TABLE 1: EF-2 ZONE ASSAY DATA. ICP - AES Analysis
----------------------------------------------------------------------------
SAMPLE
NUMBER UTM EAST UTM NORTH Au Pt Pd Co Cu Fe Ni ppm
EF2
gossan ppm ppm ppm ppm ppm ppm ppm
greater greater
than than
191618 770,527 6,336,932 0.003 0.041 0.095 2150 10000 6.76 10000
less less less
than than than
191663 770,509 6,336,968 0.001 0.005 0.001 564 8940 6.14 9120
less
than
191664 770,511 6,336,967 0.002 0.005 0.001 379 8340 4.72 8020
less greater
than than
191665 770,513 6,336,963 0.002 0.005 0.004 190 10000 8.48 2110
greater
than
191666 770,515 6,336,963 0.005 0.008 0.01 664 10000 8 4710
greater greater
than than
191667 770,516 6,336,960 0.029 0.007 0.035 1605 10000 6.7 10000
less
than
191668 770,524 6,336,958 0.005 0.005 0.007 464 7220 8.07 8150
less greater greater
than than than
191669 770,514 6,336,953 0.013 0.005 0.014 755 10000 7.22 10000
greater greater
than than
191670 770,517 6,336,948 0.005 0.005 0.015 1170 10000 6.31 10000
less greater greater
than than than
191671 770,522 6,336,930 0.001 0.005 0.012 601 10000 6.09 10000
less
than
191672 770,522 6,336,936 0.004 0.005 0.001 188 9680 6.22 3660
greater greater
than than
191673 770,522 6,336,932 0.001 0.039 0.192 1040 10000 7.49 10000
less greater
than than
191674 770,525 6,336,927 0.001 0.005 0.009 393 10000 5.6 6470
less less
than than
191675 770,524 6,336,924 0.001 0.005 0.011 363 6450 5.2 6250
greater greater
than than
191676 770,524 6,336,921 0.003 0.014 0.158 908 10000 7.74 10000
less
than
191677 770,556 6,336,944 0.006 0.005 0.021 79 814 14.15 386
191678 770,552 6,336,943 0.002 0.082 0.011 99 790 13.35 475
less less
than than
191679 770,528 6,336,943 0.001 0.005 0.004 308 4640 6.1 3640
less less
than than
191680 770,526 6,336,936 0.001 0.005 0.007 635 7500 5.68 7360
less
than
191681 770,527 6,336,938 0.001 0.005 0.005 398 9300 5.95 5530
less
than
191682 770,522 6,336,937 0.004 0.005 0.017 282 8690 7.64 4460
less
than
191683 770,518 6,336,932 0.002 0.005 0.001 85 1765 6.63 2090
less
than
191684 770,512 6,336,925 0.002 0.005 0.002 260 6460 6.8 6030
less less
than than
191685 770,593 6,337,028 0.001 0.005 0.002 67 481 10.85 286
less greater
than than
191695 770,514 6,336,923 0.005 0.005 0.085 82 3090 50 1770
less
than
191696 770,514 6,336,923 0.007 0.005 0.037 60 5960 40 1300
Gossan 330 metres to the
North
greater
than
191686 770,589 6,337,278 0.136 0.377 0.411 160 4370 50 3430
191687 770,586 6,337,288 0.01 0.229 0.068 74 1505 29.8 1580
191688 770,590 6,337,292 0.166 0.272 0.589 206 3530 43.2 5770
----------------------------------------------------------------------------
------------------------------------------------------------------------
TABLE 1: EF-2 ZONE ASSAY DATA. AA-Analysis
------------------------------------------------------------------------
SAMPLE NUMBER UTM EAST UTM NORTH Cu Ni
EF2 gossan % %
191618 770,527 6,336,932 6.71 2.21
191663 770,509 6,336,968 0.82 0.89
191664 770,511 6,336,967 0.77 0.79
191665 770,513 6,336,963 PENDING 0.21
191666 770,515 6,336,963 3.21 0.46
191667 770,516 6,336,960 12.45 1.58
191668 770,524 6,336,958 0.66 0.78
191669 770,514 6,336,953 1.80 1.10
191670 770,517 6,336,948 6.58 1.12
191671 770,522 6,336,930 1.20 1.32
191672 770,522 6,336,936 0.86 0.35
191673 770,522 6,336,932 3.27 1.34
191674 770,525 6,336,927 1.59 0.64
191675 770,524 6,336,924 0.60 0.60
191676 770,524 6,336,921 3.84 2.15
191677 770,556 6,336,944 0.08 0.04
191678 770,552 6,336,943 0.08 0.05
191679 770,528 6,336,943 0.42 0.36
191680 770,526 6,336,936 0.68 0.74
191681 770,527 6,336,938 0.87 0.55
191682 770,522 6,336,937 0.80 0.43
191683 770,518 6,336,932 0.18 0.21
191684 770,512 6,336,925 0.58 0.60
191685 770,593 6,337,028 0.05 0.03
191695 770,514 6,336,923 0.31 0.18
191696 770,514 6,336,923 0.60 0.13
Gossan 330 metres to the North
191686 770,589 6,337,278 0.40 0.35
191687 770,586 6,337,288 0.15 0.16
191688 770,590 6,337,292 0.36 0.58
------------------------------------------------------------------------
Quality Control
Danielle Giovenazzo Ph.D, P. Geo has reviewed the scientific and technical information in this press release. Dr Giovenazzo is a qualified person as defined by National Instrument 43-101.
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.
About Castillan Resources
Castillian Resources Corp. is a Canadian mineral exploration company listed on the TSX Venture Exchange under the symbol "CT" with approximately 89 million shares issued and outstanding. Castillian has a 100% interest in the Kagera Project that comprises over 1350 square kilometres in the highly mineralized Kabanga Nickel Belt in Tanzania, and an option to purchase a 100% interest in the approximately 153,000 ha Mangabal nickel-copper project in Brazil from Xstrata Nickel. The company is earning an interest in the Las Aguilas Nickel-Copper-PGM Project in Argentina from Marifil Mines Ltd. and has 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 and similarities drawn to other deposits, estimates regarding the timing for resource modeling and other exploration programs, future drill programs and the preparation of a 43-101 compliant technical reports. 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.
To view Figure 1, please visit the following link: media3.marketwire.com
To view Figure 2, please visit the following link: media3.marketwire.com
To view Figure 3, please visit the following link: media3.marketwire.com
THE TSX VENTURE EXCHANGE DOES NOT ACCEPT RESPONSIBILITY FOR THE ACCURACY OR ADEQUACY OF THIS NEWS RELEASE
Contacts
Ana Lopes
Castillian Resources Corporation
Manager Investor Relations
(416) 861-2264
Email: info@castillian.ca
Website: www.castillian.ca |
