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| | May 10, 2005
East Asia Minerals Drilling Confirms High Grade Copper Oxide Zone Including 89.1M of 2.08% Copper, Khok Adar Project, Mongolia
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| | VANCOUVER, B.C. -- East Asia Minerals Corp., (the "Company") is pleased to announce diamond drill hole results from its Khok Adar copper oxide discovery, Bayan Ulgii Province, Western Mongolia. A total of 942 m distributed in 6 diamond drill holes were completed in the western part of Zone 1, where copper mineralization had been identified by previous Russian operators in the 1980's. The phase 1 drill program tested an area where significant copper/silver mineralization was identified in 4 trenches. The trenching results were previously disclosed in the March 29, 2005 news release. A summary of the phase 1 drill results is summarized below.
DDH Name From - To Interval Cu Ag Zn Type
(m) Length (m) (%) (g/t) (%)
KA-04-01 0.0 - 89.1 89.10 2.08 12.60 trace Oxide
KA-04-02 2.40 - 59.0 56.60 1.35 16.10 trace Oxide
KA-04-03 36.5 - 46.6 10.10 3.66 31.40 trace Oxide
including 131.9 - 135.1 3.20 1.52 4.70 trace Sulphide
KA-04-04 67.4 - 90.4 23.00 1.60 38.40 2.32 Sulphide
including 72.4 - 86.4 14.00 2.44 59.80 2.13 Sulphide
including 114.0 - 132.0 18.00 trace 6.80 2.30 Sulphide
including 164.8 - 203.2 38.40 trace 8.00 3.20 Sulphide
KA-04-05 15.3 - 56.8 41.50 0.38 4.60 trace Oxide
including 15.3 - 22.0 6.70 0.91 7.70 trace Oxide
KA-04-06 35.8 - 61.6 25.80 0.28 5.90 trace Oxide
Detailed location maps, project maps and photos of recent drill intercepts are shown on the Company's website at: www.eastasiaminerals.com
KA-04-01, intersected 89.1 m of 2.08% Cu and 12.6 g/t Ag from surface -- 89.1 m in the western end of "Zone 1". The majority of the interval consists of copper oxide mineralization hosted in a brecciated and silicified, quartzitic turbidite sequence.
KA-04-03 also intersected a narrow interval of chalcopyrite/pyrite/arsenopyrite at about 135 m.
KA-04-04 intersected a sulfide zone (chalcopyrite, sphalerite, arsenopyrite, and pyrite) from 67.4 -- 203.2 m down hole.
The Khok Adar project is thought to be a structurally controlled, copper-silver mineralized system that has been overprinted by later phases of epithermal/mesothermal alteration and mineralization. The mineralization is hosted by Cambrian flysch metasediments in a structurally controlled geologic environment.
Geologic mapping by the Company indicates that these zones exhibit a strong shear fabric with a total strike length of approximately 7 km. Initial work has focused on "Zone 1" that has a strike length of approximately 1.7 km where it appears to bifurcate into two zones to the southeast and extend a further 1.8 km where they remain open to the southeast. At the west end of Zone 1 mineralization appears to be influenced and upgraded by a crosscuttin. N15ºE-trending, brittle fault zone and a N15°W-trending, fault/shear zone that is approximately 300 m in width.
To date the exploration program has focused on about 1 km of the western portion of Zone 1 and core drilling has focused on just a 300-meter strike length of this part of Zone 1. The width of the alteration/mineralization in this part of Zone 1 based on silicification/sericitization/heavy Fe oxidation is between 125 to 200 m.
There are eight additional mineralized/altered zones, previously identified from previous Soviet work within the project tenement that no significant work has been done to date. These zones have similar styles of alteration and orientation as seen in Zone 1, and are proximal to Zone 1. Copper staining is found at the surface along exposed portions of some of these zones. All of these zones together outcrop over a surface area of 5 square km.
Outside of, and adjacent to the main Khok Adar showings, that consist of these 9 mineralized/altered zones, are 13 additional copper occurrences on EAM licenses identified from the Mineral Resources Authority of Mongolia (MRAM) data. All of these are described as having a similar style of mineralization as that of Khok Adar and are scheduled for field visits shortly.
A phase 2 US$ 800,000 program is planned for the summer of 2005. This program will include additional drilling, mapping, trenching and airborne magnetics/radiometrics with IP.
QA/QC
EAM conducts continuous QA/QC programs on all projects to ensure a robust and reliable database, and to continuously improve its sampling and assaying standards. The EAM QA/QC for its drill hole program consists of reference standards and blanks, each inserted at the minimum rate of 1 every 50 samples. All the crushed samples were shipped to McPhar Labs in the Philippines as a cross-check of the SGS lab in Mongolia. McPhar Labs are now EAM's primary laboratory for core analysis.
The cores were split with a gas-powered core saw in an orderly and sequential manner. Any sample bias is diminished by marking the core split trace, by alternating the samples between the left and right halves every meter. The core sample location is then marked properly on the core box. The core samples were transported by truck with a jeep escort and accompanied by an EAM employee to SGS labs for analysis in Ulaanbaatar, Mongolia. The coarse rejects were then shipped by UPS to McPhar Laboratories in the Philippines The sample preparation at SGS labs includes complete drying of the samples, crushing the sample for 90% passing 0.6 cm or ¼". Then a rotary split divider is used.
The sample preparation at McPhar Labs includes complete drying of the samples, crushing down to 95 % the - 2 mm and splitting less than 1 kg for fine pulverizing the sample at 90% passing 200 mesh. Analysis includes a fire assay of 30 g with an AAS finish for Au. Ore grade analysis for silver, copper, zinc and lead involve a triple acid digest (nitric, hydrochloric, and perchloric) of a 1.0 g sample followed by atomic adsorption spectrometry. Results from McPhar were used in this press release. McPhar Labs are ISO 9001:2000 accredited.
John Gingerich, P.Geo, a qualified person under NI 43-101, has reviewed the contents of this news release.
ON BEHALF OF THE BOARD
"Lyndon Bradish"
President & CEO
For further information about the Company, please contact:
Mark Patchett, Telephone: (604) 684-2183 / Facsimile: (604) 688.2180
Email: [email protected]
Website: www.eastasiaminerals.com
THE TSX VENTURE EXCHANGE HAS NEITHER APPROVED OR DISAPPROVED OF THE CONTENTS
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