Intercepts 646 metres of Gold and Copper
posted on
Dec 01, 2008 11:15AM
Edit this title from the Fast Facts Section
Re: News Releases - Monday, December 01, 2008
East Asia Minerals Intercepts 646 metres of Gold and Copper in
Tengkereng Porphyry System
====================================...
For Immediate release, December 1, 2008
TSXV: EAS
VANCOUVER, B.C. -- Monday, December 1, 2008 -- East Asia Minerals
Corporation (TSXV-EAS) reports that results from drilling the first
hole at Upper Tengkereng confirms the presence of a gold-rich porphyry
system within EAS's highly prospective Barisan II Project area, in
Aceh, Indonesia. The entire 646.25 metre hole was mineralised averaging
0.39 g/t gold and 0.21% copper (0.68 g/t gold equivalent*) and included
a significant intersection of 268 metres of 0.57 g/t gold and 0.26%
copper (0.92 g/t gold equivalent) from 318 to 586 metres. Significant
near surface gold mineralisation was also intercepted, including 14 to
82 metres (68 metres) of 0.51 g/t gold and 0.21% copper (0.80 g/t gold
equivalent).
"We are particularly encouraged by the results we have received from
the first drill hole in our porphyry program", commented Michael
Hawkins, President and CEO of East Asia Minerals Corporation. "Our
results represent a significant increase in grade over the historical
results. This may be due to the gold grades in previous work being
understated, or alternatively a vectoring in the system toward higher
gold-copper grades. Upper Tengkereng was drilled first in our porphyry
program because of logistical considerations. Each of the five other
known porphyry centres in our portfolio have even better historical
results and surface indications than Upper Tengkereng. We are therefore
very confident of being able to demonstrate that our porphyry portfolio
has great potential to add significant value to EAS. We intend to
drill test the other porphyries sometime during 2009".
Upper Tengkereng Drilling Update
Recent diamond core drilling by EAS at Upper Tengkereng has returned
primary gold-copper intersections at depth beneath coincident
gold-copper surface geochemistry and magnetic anomalies associated with
porphyry style alteration. Complete results for drill hole UTD-001A
are tabled below:
Hole Number From (m) To (m) Interval (m) Gold (g/t) Copper (%) Gold
Equiv.(g/t)*
UTD-001A 0.00 646.25 646.25 0.39 0.21 0.68
Including 14.00 82.00 68.00 0.51 0.21 0.80
And 82.00 318.00 236.00 0.23 0.19 0.49
And 318.00 586.00 268.00 0.57 0.26 0.92
Including 354.00 402.00 48.00 0.91 0.35 1.39
And 566.00 586.00 20.00 0.83 0.39 1.36
* The gold equivalent uses a copper to gold ratio of 1:1.36 (1% copper
= 1.36 gm gold); based on current metal market prices, and assuming
total recoveries of both metals.
Barisan Porphyry Geological Setting
East Asia Minerals' Barisan II Project encompasses a cluster of six
known porphyry centers within a 6.2 kilometre by 3 kilometre block
(view map at www.EAminerals.com). At Upper and Lower Tengkereng
Prospect areas two windows of similar porphyry gold-copper
mineralisation, located about 1.5 kilometres apart, are exposed through
shallow volcanic cover rocks and may be linked at depth.
The EAS gold assay results from Upper Tengkereng are much better than
those reported by a previous explorer during the mid-90's, suggesting
an upgrading of gold results can also be expected at Lower Tengkereng
where historical intersections of 339 metres of 0.47 g/t gold and 0.20%
copper were reported. The recent and historical drilling results also
suggest that gold and copper grades improve with depth.
Previous work at Tengkereng was conducted by a major company and was
stopped for non-technical reasons.
Geological features observed in drill core from Upper Tengkereng
confirm that this system shares many features of the world's best
gold-rich porphyry copper deposits in the circum-Pacific rim. They
include:
a) the association of gold-copper mineralisation with composite
porphyry stocks emplaced into coeval andesitic volcanic rocks at
shallow levels;
b) association of K-silicate alteration at depth which has undergone
partial overprinting with advanced argillic and intermediate argillic
assemblages;
c) strong positive correlation between quartz vein density and gold and
copper distribution mainly represented by disseminated chalcopyrite and
bornite;
d) hydrothermal magnetite associated with quartz veining is common at
depth but appears to have been destroyed at higher elevations by
later-stage overprinting hydrothermal alteration;
e) the mineralised system is telescoped in which later stage vuggy,
banded epithermal quartz veins overprint early porphyry-style veins.
A recent photogeological interpretation of stereoscopic ASTER and
PULSAR satellite images of this region has identified additional
porphyry targets attesting to the tremendous prospectivity of this
mineralised belt. These targets and the other known porphyry centers
will be systematically explored in the future.
Samples reported were assayed at Intertek Laboratories in Jakarta.
David Royle, B.Sc. (Hons), FAusIMM, CP, the designated QP within the
meaning of 43-101, has reviewed and approves the content of this
release.
About East Asia Minerals Corporation
East Asia Minerals is an Asian-based, Canadian mineral exploration
company with gold and copper exploration properties in Indonesia, and
uranium exploration properties in Mongolia. In Indonesia the Company
has a 70 to 85% interest in six advanced gold and gold-copper
properties located in Aceh Province, Sumatra, and Sangihe Island, North
Sulawesi. Two of these, the Sangihe (Binebase-Bawone) and Barisan 1
(Abong) gold projects are being drilled to define NI43-101 compliant
resources. The Company owns eleven uranium properties, including the
advanced Ingiin-Nars, Ulaan Nuur and Enger uranium projects, two
phosphate properties and a 75% interest in the Khok Adar copper oxide
discovery in Mongolia. East Asia currently has 55,645,372 shares
outstanding. Its shares are listed for trading on the TSX Venture
Exchange under the symbol "EAS".