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Tuesday, June 05, 2012 8:59:33 AM
BCGold Corp. Receives Positive Preliminary Metallurgical Results for Engineer Mine Gold Concentrate
Date : 06/05/2012 @ 8:40AM
BCGold Corp. (TSX VENTURE:BCG)(PINKSHEETS:BCGOF) (or the "Company") is pleased
to announce the receipt of positive preliminary metallurgy results from Gekko
Systems Pty Ltd. ("Gekko") that detail gravity and leach amenability test work
performed on two samples collected during the Company's 2011 bulk sampling and
test milling at the Engineer Mine. The samples included a 63 kg run-of-mine
("ROM") sample and a 4 kg table concentrate sample, which represent the 505-3
Shoot of the Engineer Vein.
Gekko's Metallurgy Results Highlights
-- A calculated ROM head grade of 54.9 g/t gold (1.6 oz/ton) and 40.6 g/t
silver (1.2 oz/ton).
-- High gold and silver recoveries of up to 71.4% and 67.8%, respectively,
using only gravity concentration methods, produced a concentrate grading
379.2 g/t gold (11.1 oz/ton) and 260.5 g/t silver (7.6 oz/ton).
-- Gold and silver recoveries from concentrate of up to 98% and 90%,
respectively, by intensive leaching after 24 hours.
-- Engineer mill table concentrate returned 6,738 g/t gold (196.5 oz/ton)
and 2,878 g/t silver (83.9 oz/ton).
Gekko's bench-scale laboratory test-work validated BCGold Corp.'s previous
report for bulk sample 505-3B of a calculated head grade of 44.6 g/t Au (1.3
oz/ton) and table concentrate grade of 6,485.8 g/t Au (189.2 oz/ton), using the
on-site gravity separation mill at Engineer Mine (see February 27, 2012 news
release at www.bcgoldcorp.com).
Gekko's analytical results indicate that not all the gold and silver in the ROM
sample was sufficiently liberated at the grind size utilized by the current
on-site ball mill, and that there is recovery upside potential with modification
of the gravity separation circuit. Gekko proposes that the gravity recovery of
gold and silver could be improved by adding a secondary re-grind mill to the
mill circuit and re-tabling the tails at a finer grind size, which may allow
further reduction of the concentrate mass while maintaining high gold and silver
recoveries. Gekko has designed a study to test this hypothesis and investigate
the efficacy of these relatively inexpensive modifications to the on-site mill
circuit. The Company has commissioned this study, which is expected to be
completed in approximately 10 weeks.
"We are very pleased with Gekko's preliminary gravity recovery test work,"
commented Brian P. Fowler, President and CEO of BCGold Corp. "The ability to
produce a high-grade gold concentrate with the potential of greater than 70%
gold recovery reduces the requirement to install an on-site leaching circuit to
produce a marketable product. We believe we can produce a marketable gold-rich
gravity concentrate utilizing the Engineer mill and ship this material for
off-site refining on an economic basis. The ongoing Gekko re-grinding study is
expected to substantially improve the gravity recovery process and further
enhance the economics of this project."
Background
In 2011, BCGold Corp. conducted bulk sampling and on-site test milling at the
Engineer Mine property that produced 970 kg of gravity gold concentrate from 246
tonnes of ore; the average concentrate gold grade was 2,193 g/t (64.0 oz/ton).
This concentrate is currently being refined for gold and silver recovery by SiPi
Metals Corp. in Chicago, Illinois (see May 2, 2012 news release at
www.bcgoldcorp.com).
In December 2011, BCGold Corp. submitted to Gekko a 63 kg ROM sample and a 4 kg
table concentrate sample from the 69 tonne Engineer Vein bulk sample 505-3B to
determine gold and silver recovery potential using continuous gravity recovery.
BCGold previously reported bulk sample 505-3B returned a minable head grade of
44.6 g/t gold. The amenability of the ROM concentrate produced by Gekko and the
table concentrate produced on-site to intensive cyanide leaching was also
tested.
Gekko specializes in the design, development and distribution of innovative,
low-cost mineral processing systems with a particular focus on gravity
separation. Gekko-built systems reduce the environmental impact of mineral
processing and have been installed worldwide.
Darren O'Brien, P.Geo., Vice President Exploration for BCGold Corp. and a
Qualified Person as defined by National Instrument 43-101, has reviewed and
approved the technical contents of this news release.
About the Engineer Mine
BCGold Corp. owns a 75% interest in the Engineer Mine property, with an option
to earn a 100% interest. Engineer Mine was a high-grade gold producer that came
to peak production in the mid-1920s and ceased operation in the early 1930s.
More than 560 kg (18,000 oz) of gold and 278 kg (8,950 oz) of silver were
officially produced at realized grades exceeding 39 g/t Au and 20 g/t Ag, from
high-grade epithermal quartz-carbonate veins on six of eight mine levels.
There are two large shear zones and more than 25 known veins on the property;
only four veins have undergone limited production and exploration to date. All
shear zones and veins remain open at depth and little exploration has been
conducted deeper than 200 metres below surface.
About BCGold Corp.
BCGold Corp. (TSX VENTURE:BCG) is focused primarily on gold exploration and
development in under-explored historic and emerging mining districts in British
Columbia and Yukon. BCGold Corp. acquires and develops conceptual, early and
mid-stage exploration opportunities and advances them towards resource
development. Currently, institutional investors hold 21% of the Company's
outstanding shares and Kinross Gold Corporation holds 5%.
BCGold Corp. is unique in that it not only exposes investors to the prospects of
new discoveries, but is also positioned to offset exploration costs and minimize
dilutive share issuances for capital by monetizing/forward selling gold
concentrate recovered from on-site processing of bulk sample material at the
Company's high-grade gold Engineer Mine property.
BCG Waiting and watching---GLTA!
Date : 06/05/2012 @ 8:40AM
BCGold Corp. (TSX VENTURE:BCG)(PINKSHEETS:BCGOF) (or the "Company") is pleased
to announce the receipt of positive preliminary metallurgy results from Gekko
Systems Pty Ltd. ("Gekko") that detail gravity and leach amenability test work
performed on two samples collected during the Company's 2011 bulk sampling and
test milling at the Engineer Mine. The samples included a 63 kg run-of-mine
("ROM") sample and a 4 kg table concentrate sample, which represent the 505-3
Shoot of the Engineer Vein.
Gekko's Metallurgy Results Highlights
-- A calculated ROM head grade of 54.9 g/t gold (1.6 oz/ton) and 40.6 g/t
silver (1.2 oz/ton).
-- High gold and silver recoveries of up to 71.4% and 67.8%, respectively,
using only gravity concentration methods, produced a concentrate grading
379.2 g/t gold (11.1 oz/ton) and 260.5 g/t silver (7.6 oz/ton).
-- Gold and silver recoveries from concentrate of up to 98% and 90%,
respectively, by intensive leaching after 24 hours.
-- Engineer mill table concentrate returned 6,738 g/t gold (196.5 oz/ton)
and 2,878 g/t silver (83.9 oz/ton).
Gekko's bench-scale laboratory test-work validated BCGold Corp.'s previous
report for bulk sample 505-3B of a calculated head grade of 44.6 g/t Au (1.3
oz/ton) and table concentrate grade of 6,485.8 g/t Au (189.2 oz/ton), using the
on-site gravity separation mill at Engineer Mine (see February 27, 2012 news
release at www.bcgoldcorp.com).
Gekko's analytical results indicate that not all the gold and silver in the ROM
sample was sufficiently liberated at the grind size utilized by the current
on-site ball mill, and that there is recovery upside potential with modification
of the gravity separation circuit. Gekko proposes that the gravity recovery of
gold and silver could be improved by adding a secondary re-grind mill to the
mill circuit and re-tabling the tails at a finer grind size, which may allow
further reduction of the concentrate mass while maintaining high gold and silver
recoveries. Gekko has designed a study to test this hypothesis and investigate
the efficacy of these relatively inexpensive modifications to the on-site mill
circuit. The Company has commissioned this study, which is expected to be
completed in approximately 10 weeks.
"We are very pleased with Gekko's preliminary gravity recovery test work,"
commented Brian P. Fowler, President and CEO of BCGold Corp. "The ability to
produce a high-grade gold concentrate with the potential of greater than 70%
gold recovery reduces the requirement to install an on-site leaching circuit to
produce a marketable product. We believe we can produce a marketable gold-rich
gravity concentrate utilizing the Engineer mill and ship this material for
off-site refining on an economic basis. The ongoing Gekko re-grinding study is
expected to substantially improve the gravity recovery process and further
enhance the economics of this project."
Background
In 2011, BCGold Corp. conducted bulk sampling and on-site test milling at the
Engineer Mine property that produced 970 kg of gravity gold concentrate from 246
tonnes of ore; the average concentrate gold grade was 2,193 g/t (64.0 oz/ton).
This concentrate is currently being refined for gold and silver recovery by SiPi
Metals Corp. in Chicago, Illinois (see May 2, 2012 news release at
www.bcgoldcorp.com).
In December 2011, BCGold Corp. submitted to Gekko a 63 kg ROM sample and a 4 kg
table concentrate sample from the 69 tonne Engineer Vein bulk sample 505-3B to
determine gold and silver recovery potential using continuous gravity recovery.
BCGold previously reported bulk sample 505-3B returned a minable head grade of
44.6 g/t gold. The amenability of the ROM concentrate produced by Gekko and the
table concentrate produced on-site to intensive cyanide leaching was also
tested.
Gekko specializes in the design, development and distribution of innovative,
low-cost mineral processing systems with a particular focus on gravity
separation. Gekko-built systems reduce the environmental impact of mineral
processing and have been installed worldwide.
Darren O'Brien, P.Geo., Vice President Exploration for BCGold Corp. and a
Qualified Person as defined by National Instrument 43-101, has reviewed and
approved the technical contents of this news release.
About the Engineer Mine
BCGold Corp. owns a 75% interest in the Engineer Mine property, with an option
to earn a 100% interest. Engineer Mine was a high-grade gold producer that came
to peak production in the mid-1920s and ceased operation in the early 1930s.
More than 560 kg (18,000 oz) of gold and 278 kg (8,950 oz) of silver were
officially produced at realized grades exceeding 39 g/t Au and 20 g/t Ag, from
high-grade epithermal quartz-carbonate veins on six of eight mine levels.
There are two large shear zones and more than 25 known veins on the property;
only four veins have undergone limited production and exploration to date. All
shear zones and veins remain open at depth and little exploration has been
conducted deeper than 200 metres below surface.
About BCGold Corp.
BCGold Corp. (TSX VENTURE:BCG) is focused primarily on gold exploration and
development in under-explored historic and emerging mining districts in British
Columbia and Yukon. BCGold Corp. acquires and develops conceptual, early and
mid-stage exploration opportunities and advances them towards resource
development. Currently, institutional investors hold 21% of the Company's
outstanding shares and Kinross Gold Corporation holds 5%.
BCGold Corp. is unique in that it not only exposes investors to the prospects of
new discoveries, but is also positioned to offset exploration costs and minimize
dilutive share issuances for capital by monetizing/forward selling gold
concentrate recovered from on-site processing of bulk sample material at the
Company's high-grade gold Engineer Mine property.
BCG Waiting and watching---GLTA!
A HUNDRED YEARS FROM NOW IT WILL NOT MATTER WHAT MY BANK ACCOUNT WAS, THE SORT OF HOUSE I LIVED IN, OR THE KIND OF CAR I DROVE...BUT THE WORLD MAY BE DIFFERENT BECAUSE I WAS IMPORTANT IN THE LIFE OF A CHILD.
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