Exporation

Çöpler District Exploration

Alacer’s exploration licenses surrounding the Çöpler Gold Mine span across a 17 km by 25 km area. The exploration licenses are managed under two separate joint ventures. Alacer owns 80% of the licenses adjacent to Çöpler Mine under the Anagold Madencilik Sanayi ve Ticaret A.S. JV and 50% of the remaining licenses in the Çöpler District under the Kartaltepe JV, both in partnership with Lidya Madencilik Sanayi ve Ticaret A.S.

Operations Map

Alacer Gold announced a maiden Mineral Reserve at Çakmaktepe in the Çöpler District of 176,000 oxide ounces and a 70% increase to the Measured and Indicated Mineral Resource to 239,000 oxide ounces on December 18, 2017. Mineralization has been identified in several prospects that can potentially be mined as a series of satellite open pits within 5 km to 7 km of the existing Çöpler Mine facilities. Further information on this resource is available in the “Alacer Gold Announces Maiden Mineral Reserve and a 70% Increase in Measured and Indicated Mineral Resource for Çakmaktepe as well as Additional Exploration Results for Çakmaktepe” press release.

Mineral Resource for Çöpler Near-Mine Deposits (As of December 1, 2017)
Deposit
Material Type
Resource Category Material
Tonnes (x1000)
Au (g/t)
Ag (g/t)
Contained Au Ounces
Çakmaktepe & Bayramdere
Oxide
Measured
-
-
-
-
Indicated
3,965 
1.88 
12.51
239,000
Deposits

Measured + Indicated
3,965 
1.88 
12.51
239,000
Inferred
1,464 
1.06 
8.01
50

Mineral Resources that are not Mineral Reserves have not demonstrated economic viability. Mineral Resources are shown on a 100% basis, of which Alacer owns varying amounts ranging from 50% to 80%. Alacer’s attributable Measured and Indicated portion is 120,000 contained ounces and 29,000 Inferred contained ounces. Rounding differences will occur. The appendices to the announcement provides information on the data, assumptions and methodologies underlying these estimates.

On December 18, 2017, a maiden Mineral Reserve of 176,000 oxide ounces and a Measured and Indicated Mineral Resource of 239,000 ounces for Çakmaktepe and Bayramdere were announced along with the initial drill results for Çakmaktepe Far North. Pending approval of the revised Environmental Impact Assessment, mining is expected to begin at Çakmaktepe in 2018. This initial Çakmaktepe material will be trucked to the existing Çöpler processing facility and is estimated to contribute approximately 50,000 ounces of recoverable gold production, predominantly in 2019. Pasture permit applications have been submitted for the other areas of Çakmaktepe defined as Pasture land. The mine access road connecting Ҫӧpler to the Çakmaktepe deposits is under construction and connects to the new tailings storage facility haul road. The mineralization style is similar to the Çöpler deposit and exploration continues at Çakmaktepe. Many areas of the Çakmaktepe deposit remain open and the updated Mineral Resource does not include drilling after June 21, 2017. Initial drilling of Çakmaktepe Far North is encouraging and exploration of the area has been accelerated. The in-pit exploration program at Çöpler will also continue and is focused on finding additional oxide ore. 
Çöpler DistrictÇakmaktepe Prospect Location Plan: Çakmaktepe Project:  North, Central, East and Southeast; SE = Çakmaktepe Southeast; B = Bayramdere. Red outlines define mineralization envelopes. Blue shapes define resource pit shells. ÇFN: Çakmaktepe Far North exploration property.

The Çakmaktepe North and Central deposit is located on the 50% Alacer-owned (Kartaltepe) tenement. The northern mineralization is confined to a major sub-vertical shear zone. Oxide mineralization is characterized by silica-iron-carbonate rich ‘jasperoid‘, iron rich gossan, and brecciated limestone. Mineralization also occurs along flat thrust structures and lithological contacts which can be cut by the shear zone. Contacts between ophiolite / limestone and lithologies in contact with intrusive granodiorite dykes are generally mineralized.

  • The North deposit is confined to two major NW-SE trending fault zones. The western fault, Çakmaktepe Fault, delineates the western extent of Çakmaktepe North and separates it from the Çakmaktepe ophiolitic units.
  • The shear fault separates the mineralization from ophiolite to the west.
  • A thrust fault delineates the eastern extent of Çakmaktepe Central and separates it from the Çakmaktepe ophiolitic units.
  • The listwanite horizon is the most favorable host rock for gold.
  • Granodiorite intrusions show evidence of hydrothermal activity. This can take the form of iron replacement or sheeted quartz veins with jasperoid closer to granodiorite contacts.

A majority of the mineralization within the Ҫakmaktepe North pit boundary is steeply dipping and extends to a depth of nearly 180 meters. The local topography and near vertical mineralization results in a high open pit strip-ratio. Conversely, mineralization within the Ҫakmaktepe Central pit boundary is found at shallower depths and is oriented nearly horizontal. This orientation results in a low strip-ratio with favorable conditions for rapid ore extraction and minimal pre-strip. The mine plan considers mining in the lower strip-ratio pit first.

The Çakmaktepe East deposit is on the 50% Alacer-owned (Kartaltepe) tenement area and is a gold-copper deposit with mineralization occurring near surface in stacked iron rich gossans and associated oxidized host rocks. Most of mineralization occurs along the contacts of diorite and shear zone between ophiolites and calc-hornfels with the highest grades in proximity to diorite contacts. The Çakmaktepe East zone is now considered to be fully defined to a depth of 100m below surface.

The Çakmaktepe Southeast deposit is on an 80% Alacer-owned (Anagold) tenement and is characterized by gold-copper-silver mineralization, mainly hosted within iron rich gossans and altered wall rocks developed along shallow dipping contacts between diorite, ophiolite and limestone lithologies. Mineralization is from surface to a depth of 50m. The zone was fully defined by resource drilling in 2015 upon which 2017 Mineral Resource estimates are based.

The Çakmaktepe Far North Prospect is located immediately north (about 1.5 km) of Çakmaktepe North.  The Çakmaktepe Update included initial drill results for Çakmaktepe Far North. Five holes have been drilled with each showing good mineralization and grade continuity. Exploration of the mineralized trend has just commenced, and it is hoped that the mineralization extends further along the trend. The exploration area is predominantly in the Anagold 80:20 lease area. All the drilling to date is in the 80:20 lease area.

The deposits are hosted in a sequence of stacked, shallow-dipping fault-bounded slices of ultramafic rocks and sedimentary rocks (dominated by dolomites), apparently intruded by porphyritic granodioritic rocks. Gold mineralization is hosted at shallow depths (commonly <20 m below surface) in silicified carbonaceous rocks and gossanous ironstones and dolomites. Gold mineralization is largely present as oxide material but there are zones of less- or little-oxidized sulfides. Listwanites appears to be mineralized at the fault contact and unmineralized at the surface.

The Bayramdere deposit is on the 50% Alacer-owned (Kartaltepe) tenement area and is an oxide gold and copper deposit. Mineralization is localized within three stacked shallow dipping lodes. The mineralization has formed at the contacts of limestone and ophiolite lithologies with mineralization replacing limestone along the contacts. The limestone / ophiolite contacts are low-angle thrusts, with limestone typically being trapped as wedges of material within a dominantly ophiolite stratigraphy. Mineralization occurs within iron rich gossan horizons. Although a small deposit, Bayramdere is higher-grade and can support a high strip-ratio to access mineralization. A total of 10,709 m of drilling for Bayramdere was included into the Mineral Resource estimate, inclusive of metallurgical and geotechnical holes.

The Demirmagara prospect is on the 80% Alacer-owned (Anagold) tenement area and is characterized by epithermal gold mineralization, confined to NW-SE trending fault system with extensive jasperoids at the hornfels/bleached limestones and intrusive (mostly dioritic) contacts. Carbonate replacement epithermal outcrops give elevated gold grades. Road construction is ongoing to support the subsequent drilling program. 

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