GOLCONDA RESOURCES LTD.
Suite 780, Eau Claire Place II
521 – 3rd Avenue S.W.
Calgary, AB T2P
3T3
April 4, 200
7
News
Release
Roberts Mountain Thrust with Gold
Values in Lower Plate Discovered in Golconda’s Ralston Valley
During the recent drill program on the Ralston Valley property in Nevada,
Golconda Resources’ initial plan was to test four gold-mineralized areas on
two NW Walker Lane structures. The
outcropping rock targeted was Ordovician siltstone and limey siltstone and it
was expected that, at a depth of 1300-1500 ft, a sequence with higher limestone
content would produce a more favourable host rock for gold mineralization.
Drill hole BX-1 was drilled
with a dip of 80º to the west. Instead of the expected limey siltstone, the
Roberts Mountain Thrust was encountered from 920-1140 ft, with Lower Plate
younger laminated silty limestone below. Encountering this sequence of Roberts
Mountain Thrust followed by Lower Plate younger laminated silty limestone is the
most promising discovery yet, with far-reaching implications for Golconda. This
host rock is the most favourable in Nevada and, in the Carlin area alone,
contains over 200 million ounces of gold.
At 1380 ft the laminated limestone became
completely replaced to silica with faint lamination still recognizable in
places. Complete silica replacement is a prerequisite for Carlin-type gold
deposits. At 1420 ft the drill pipe became stuck and the hole had to be
abandoned. But due to the exciting discovery of the Roberts Mountain Thrust
sequence, hole BX-2 was begun 3 metres from BX-1 to continue investigating the
rock below 1420 ft. Hole BX-2 was drilled with a dip of 75º to the west. Down
to 1420 ft the hole encountered an identical rock sequence as that of BX-1. The
following describes the rock encountered in the Roberts Mountain Thrust and the
Lower Plate:
Roberts Mountain Thrust
-
From 920-990 ft - pulverized limestone with small pieces of breccias and rubble
zones.
-
From 990-1140 ft - limestone pieces in pulverized limestone with heavy calcite
veining; thin layers of black shale consisting mainly of carbon. Shale part
shows heavy slickensides.
Lower Plate
- From 1140-2050 ft - Consisting of
banded and laminated limestone (possible Roberts Mountain Formation).
-
From 2050-2180 ft - Grey fine-grained quartzite.
-
From 2180-2310 ft - Alternating thin sequences of limestone, mudstone, siltstone
and quartzite.
-
From 2310-2390 ft (end of hole) - Coarse-grained intrusive with chloritized
mica.
Alteration and Mineralization
Typical Carlin-type decalcification and silicification
occurs from 1380-1450 ft and from 1500-1775 ft. Both zones have been totally
replaced by silica.
Apart from the near-surface
mineralization, gold values are found in the decalcified and totally silicified
laminated limestone of the Lower Plate. Average gold values are about 30 ppb
with two 10 ft intervals as high as 171 ppb and 531 ppb gold. The thick sequence of silica replacement
from 1380-1775 ft indicates a very strong system which has been intersected at
the periphery. Higher gold grades are expected to occur where this favourable
host rock has been shattered by a major structure, two of which are visible on
the air photo.
Sampling was done by Guenter
Liedtke on 10 ft intervals. From 1500–2390 ft the hole was drilled with BQ
size and 8 ft of every 10 ft interval (about 7 kg of material) was sent to the
laboratory for assay, while 2 ft of representative core was kept as reference. Following the discovery of the Roberts
Mountain Thrust and Lower Plate future sampling techniques will have to be more
elaborate and thorough.
Golconda owns 60 claims 100% (the Ralston Valley claims) and has an option to
earn 60% on 35 adjoining claims (BX claims) by spending US $400 000 and an
additional 15% by producing a bankable feasibility study.
The Ralston Valley prospect
contains a large area of Carlin-type gold mineralization in what are now known
Upper Plate Ordovician sediments. Major
fault structures crossing several gold-mineralizing Walker Lane structures have
presumably shattered the underlying favourable host rocks of the Lower Plate
limestone sequence. These areas
with enormous potential to contain high-grade ore bodies are the prime targets
for a major drilling program planned for the spring/summer 2007.
Golconda’s CEO Guenter J. Liedtke, P.Geol. is the designated qualified person
for the purposes of National
Instrument
NI 43-101 Standards of Disclosure and all assays were carried out by ALS Chemex
of Vancouver and Reno, Nevada.
On behalf of Golconda Resources Ltd.,
Guenter J. Liedtke, President
For more information please contact Guenter Liedtke -
Ph: 403.232.6828 Fax: 403.232.8650
E-mail: golcondaresources@telus.net Website: www.golcondaresources.com
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adequacy or accuracy of this release.