The highlights of the drilling results include:
DDH-24: |
94 m |
@ |
1.53 g/t Au, 0.52% Cu (2.43 g/t
AuEq) |
DDH-25: |
55 m |
@ |
0.85 g/t Au, 0.30% Cu (1.37 g/t
AuEq) |
DDH-26: |
78 m |
@ |
1.02 g/t Au, 0.40% Cu (1.71 g/t
AuEq) |
and: |
42 m |
@ |
1.02 g/t Au, 0.28% Cu (1.49 g/t
AuEq) |
DDH-27: |
113 m |
@ |
0.74 g/t Au, 0.32% Cu (1.29 g/t
AuEq) |
and: |
94 m |
@ |
0.69 g/t Au, 0.27% Cu (1.15 g/t
AuEq) |
Bellhaven is now preparing for the Company's first NI 43-101 resource
estimate for the La Cantera prospect at the La Mina project, Colombia.
For maps showing the drill holes, as well as a geologic cross section
highlighting the gold-copper intercepts, please use the following
link: http://media3.marketwire.com/docs/bhv_maps_628.pdf.
La Cantera is the principal porphyry gold-copper prospect at La Mina,
Colombia. Five other prospects occur within one km of La Cantera and
include the Middle Zone, El Limon, El Cafetal, La Virgen, Filo de Oro, and
El Tanque. Most of the concession still remains
unexplored. Bellhaven holds an option to earn 100% of the La Mina
project (see press release dated May 17th, 2010).
Paul Zweng, Bellhaven's Interim CEO and Director, commented as
follows:
"The completion of DDH-27 brings the drilling campaign at La Cantera to
a close. We are pleased by the results of the campaign as we now have
delimited the outer margins of the mineralized zone at La Cantera, one of
several prospects at La Mina. This is important because we can now
commence with the preparation of a NI 43-101 resource, the first for
Bellhaven. In addition, the drill holes continue to deliver some of
the highest grade intercepts being reported from any gold-copper porphyry
deposit located in the Americas.
We are now drilling the prospects to the north of La Cantera such as El
Limon, Filo de Oro, and the Middle Zone. We will report these results
as they become available."
Discussion of the Drill-Hole Results
Bellhaven initiated its maiden drilling program at its La Mina project
last summer (see press release dated July 27th, 2010). The
first eight holes collared at the La Cantera prospect by Bellhaven were
reported in the September 9th, December 13th, 2010,
January 24th, February 28th, April 6th,
and May 9th, 2011, press releases. This press release
discusses the five most recent drill holes, DDH-23 to -27, collared at La
Cantera by Bellhaven.
DDH-23 and -25 were designed to delimit the southwestern margins of the
La Cantera prospect. DDH-23 passed outside the main gold-copper
target—the porphyry intrusive center—and instead cut mostly volcanic rocks
surrounding the intrusive center. The hole returned two low-grade
intervals containing gold and copper just above the 0.40 g/t AuEq cut-off
grade (see Table 2). In contrast, segments of DDH-25 included the
outermost margins of the porphyry intrusive center, but most consisted of
the surrounding volcanic rocks. Approximately one-third of the
higher-grade interval, 54.70 m of 0.85 g/t Au and 0.30% Cu (1.37 g/t
AuEq), contained rocks belonging to the porphyry intrusive
center. The 54.70-m wide interval is included within a much broader
zone consisting of 257 m grading 0.45 g/t Au and 0.23% Cu (0.84 g/t
AuEq). This 257-m wide zone consists mostly of volcanic rocks
occurring outside the margins of the porphyry intrusive center.
DDH-24, -26, and -27 were collared to delimit the southeastern margins
of the La Cantera prospect. These three holes bore through the
porphyry intrusive center and thus delivered multiple intervals of gold
and copper above 1 g/t AuEq (See Table 2). These intercepts above 1
g/t AuEq are exceptional and continue to distinguish La Cantera from other
gold-copper porphyry deposits in the Americas. Silver grades for the
intercepts contained in these three holes ranged from 1.5 to 3.3
g/t.
Table 1. Drill-Hole Data, La Cantera Porphyry Au-(Cu)
Prospect, La Mina, Colombia. |
Hole
Number |
|
East
UTM Coord (meters) |
|
North
UTM Coord (meters) |
|
Elevation (m.a.s.l) |
|
Azimuth (degrees) |
|
Plunge (degrees) |
|
Total
Length (meters) |
LM-DDH-23 |
|
418,953.364 |
|
654,594.307 |
|
1,774.26 |
|
135 |
|
-65 |
|
365.76 |
LM-DDH-24 |
|
419,045.390 |
|
654,430.578 |
|
1,730.78 |
|
045 |
|
-55 |
|
436.77 |
LM-DDH-25 |
|
419,140.464 |
|
654,412.265 |
|
1,737.96 |
|
315 |
|
-55 |
|
305.35 |
LM-DDH-26 |
|
419,099.688 |
|
654,489.070 |
|
1,743.01 |
|
045 |
|
-55 |
|
294.13 |
LM-DDH-27 |
|
419,200.443 |
|
654,586.642 |
|
1,751.40 |
|
225 |
|
-60 |
|
419.10 |
m.a.s.l. = meters above sea level; Coord = Coordinate |
|
Table 2. Drill-Hole Results for La Cantera Porphyry
Au-(Cu) Prospect, La Mina, Colombia. |
Hole Number |
From (m) |
To (m) |
Intercept (m) |
Au (g/t) |
Cu (%) |
AuEq (g/t) |
Prospect |
2010 & 2011 Drill Results by Bellhaven Copper &
Gold |
LM-DDH-07 |
7.62 |
27.91 |
20.29 |
0.74 |
0.40 |
1.43 |
La
Cantera |
LM-DDH-08 |
0.70 |
88.00 |
87.30 |
1.07 |
0.30 |
1.59 |
La
Cantera |
and |
197.05 |
269.72 |
72.67 |
0.88 |
0.39 |
1.55 |
La
Cantera |
including |
199.05 |
239.05 |
40.00 |
1.43 |
0.55 |
2.37 |
La
Cantera |
LM-DDH-09 |
194.75 |
337.19 |
142.44 |
0.70 |
0.29 |
1.20 |
La
Cantera |
including |
216.75 |
307.80 |
91.05 |
0.93 |
0.38 |
1.58 |
La
Cantera |
LM-DDH-14 |
100.00 |
246.00 |
146.00 |
0.93 |
0.33 |
1.51 |
La
Cantera |
including |
100.00 |
226.00 |
126.00 |
1.02 |
0.36 |
1.64 |
La
Cantera |
and |
392.00 |
454.00 |
62.00 |
0.75 |
0.38 |
1.40 |
La
Cantera |
including |
394.00 |
439.00 |
45.00 |
0.95 |
0.44 |
1.71 |
La
Cantera |
LM-DDH-15 |
511.00 |
601.00 |
90.00 |
0.57 |
0.34 |
1.15 |
La
Cantera |
and |
626.00 |
634.00 |
8.50 |
0.48 |
0.23 |
0.87 |
La
Cantera |
LM-DDH-16 |
12.00 |
217.30 |
205.30 |
0.91 |
0.31 |
1.45 |
La
Cantera |
including |
94.48 |
192.70 |
98.22 |
1.62 |
0.44 |
2.38 |
La
Cantera |
and |
402.00 |
470.00 |
68.00 |
0.60 |
0.34 |
1.19 |
La
Cantera |
LM-DDH-19 |
0.00 |
230.00 |
230.00 |
0.99 |
0.30 |
1.50 |
La
Cantera |
including |
0.00 |
123.80 |
123.80 |
1.23 |
0.29 |
1.72 |
La
Cantera |
including |
141.00 |
230.00 |
89.00 |
0.83 |
0.36 |
1.45 |
La
Cantera |
LM-DDH-22 |
8.00 |
244.00 |
236.00 |
1.04 |
0.45 |
1.80 |
La
Cantera |
including |
8.00 |
146.28 |
138.28 |
1.53 |
0.61 |
2.58 |
La
Cantera |
New Results Reported in this Press
Release |
LM-DDH-23 |
211.00 |
289.00 |
78.00 |
0.14 |
0.20 |
0.47 |
La
Cantera |
and |
311.90 |
322.00 |
10.10 |
0.19 |
0.22 |
0.57 |
La
Cantera |
LM-DDH-24 |
87.00 |
181.05 |
94.05 |
1.53 |
0.52 |
2.43 |
La
Cantera |
and |
328.00 |
420.00 |
92.00 |
0.46 |
0.24 |
0.86 |
La
Cantera |
LM-DDH-25 |
17.00 |
274.00 |
257.00 |
0.45 |
0.23 |
0.84 |
La
Cantera |
including |
73.00 |
127.70 |
54.70 |
0.85 |
0.30 |
1.37 |
La
Cantera |
LM-DDH-26 |
4.57 |
47.00 |
42.43 |
1.02 |
0.28 |
1.49 |
La
Cantera |
and |
129.20 |
275.00 |
145.80 |
0.46 |
0.29 |
1.13 |
La
Cantera |
including |
129.20 |
207.00 |
77.80 |
1.02 |
0.40 |
1.71 |
La
Cantera |
LM-DDH-27 |
28.95 |
141.60 |
112.65 |
0.74 |
0.32 |
1.29 |
La
Cantera |
and |
219.00 |
313.00 |
94.00 |
0.69 |
0.27 |
1.15 |
La
Cantera |
including |
242.00 |
279.30 |
37.30 |
1.24 |
0.38 |
1.89 |
La
Cantera |
Intercepts calculated using a 0.40 g/t AuEq cut-off
grade. AuEq (g/t) = gold equivalent (g/t) |
AuEq (g/t) calculated assuming a long-term gold price of $900/oz
and a long-term copper price of $2.25/lb. |
No adjustment has been made for metallurgical recoveries or
net-smelter returns as these remain uncertain at this time. |
AuEq formula: AuEq g/t = Au g/t + [(Cu% x 22.0462 x
2.25)/(900/31.1035)] g/t |
Gold and copper grades capped at 5 g/t Au and 2% Cu,
respectively. |
All drill holes are diamond-core holes. LM-DDH-10, -11,
-12, -13, -17, -18, -20, & -21 drilled outside of La
Cantera. |
ALS Colombia Ltda. prepared the drill-core samples, producing the
sample pulps in Bogota. The South American Central Lab of ALS Chemex
in Lima, Peru, performed all assays pertaining to the drill-core samples
highlighted in the text and table above. Gold was analyzed by fire
assay on a 50-gram sample with an atomic-absorption finish. Copper was
analyzed using four-acid digestion, ICP-AES. The Company maintains a
QA-QC program regarding the preparation, shipping, and checking of all
samples, including the use of certified standard reference materials,
blanks, as well as field- and pulp duplicates.
About the La Mina porphyry Au-(Cu) prospect
La Mina (also known as Venecia) lies within the Middle Cauca belt of
Miocene-age volcano-plutonic rocks in central Colombia known to host large
porphyry gold deposits such as La Colosa (12.3 Moz Au; AngloGold Ashanti),
Titiribi (3.7 Moz Au; Sunward Resources), Quebradona (AngloGold Ashanti –
B2Gold), and Quinchia (Batero Gold), as well as large epithermal gold
districts such as Marmato (9.8 Moz Au; Medoro Resources).
In mid 2006, AngloGold Ashanti and Bema Gold drilled six holes at the
La Cantera prospect, with DDH-02 (152 m @ 0.82 g/t Au, 0.26% Cu starting
at 24 m) and DDH-05 (106 m @ 1.11 g/t Au, 0.40% Cu starting at 12 m)
yielding 100+ m intercepts of greater than 1 g/t AuEq at shallow
depths. Bellhaven added to these encouraging results with DDH-08
(87.3 m @ 1.07 g/t Au, 0.30% Cu starting at 0.70 m and 72.7 m @ 0.88 g/t
Au, 0.39% Cu starting at 197.1 m), DDH-09 (142.4 m @ 0.70 g/t Au, 0.29% Cu
starting at 194.8 m), DDH-14 (126 m @ 1.02 g/t Au, 0.36% Cu starting at
100 m), and DDH-16 (205.3 m @ 0.91 g/t Au, 0.31% Cu starting at 12
m).
The most important host rocks observed in drill core include the Combia
Formation intermediate volcanic rocks as well as hydrothermal breccias and
diorite porphyry. Alteration is typical of gold porphyry deposits as
exemplified by a potassic-calcic core encircled by sericitic, intermediate
argillic, and propyllitic alteration zones. Specifically, most of the gold
and copper discovered so far at La Cantera are spatially associated with
quartz-magnetite-chalcopyrite ± bornite veinlets in potassic altered
porphyry and breccias containing elevated quantities of hydrothermal
magnetite. As a result, the gold-bearing rocks are highly magnetic
(ca. 200x10-3 SI) which creates a sharp contrast with the
barren and weakly magnetic intermediate argillic-altered rocks as well as
the non-magnetic sericite-altered rocks that surround the potassic
core.
Six other potentially important targets occur proximal to the La
Cantera target: Middle Zone, El Limon, El Cafetal, La Virgen, Filo de
Oro and El Tanque.
This news release has been prepared under the supervision of Mr.
Thomas J. Drown, P.Geo., who serves as the qualified person as defined by
National Instrument 43-101 responsible for ensuring that the geological
information in this release is accurate.
About Bellhaven
Bellhaven Copper & Gold Inc. is a Canadian-listed (News
- Market
indicators) exploration company exploring for gold and copper in
Panama and Colombia. The Company's objective is to become one of the
best gold-copper companies operating in Panama and Colombia by
discovering, acquiring, and developing high-quality resources in a safe
and responsible manner to the benefit of all of its stakeholders.
The Company's principal assets include the La Mina porphyry
gold-(copper) project in the Middle Cauca belt of Colombia, the Pitaloza
and three other high-sulphidation epithermal gold-(copper) and porphyry
copper prospects located on the Azuero Peninsula in Panama.
For more information regarding Bellhaven, please visit our website at
www.bellhavencg.com.
On behalf of the board of directors,
Paul L. Zweng, CEO & Director
BELLHAVEN COPPER & GOLD INC.