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Sisorta Project
The Sisorta project, located in Sivas province, north-central Turkey, is covered by a 2,670 hectare EMX exploration license. EMX entered into a Sisorta project joint venture with Chesser Resources Limited (ASX: CHZ) ("Chesser") in October, 2007.
The geology is dominated by intensely altered volcanic and intrusive rocks with multiple zones of hydrothermal brecciation and silicification. These altered volcanic rocks and breccias are associated with significant levels of gold and copper mineralization.
The alteration and geochemistry of the system are consistent with a high sulfidation gold-enriched deposit model. From the Company's drill results, oxide gold mineralization generally occurs from the surface to depths ranging from 23 to over 100 meters, with tenors over significant intervals ranging from 0.47 g/t to over 5 g/t gold. In addition, drill holes targeting the deeper extent of the system intersected porphyry-style alteration and anomalous copper mineralization.
Maden Tetkik ve Arama ("MTA"), Turkey's General Directorate of Mineral Research and Exploration, conducted a drill exploration program on the Sisorta property from 1995 through 1998, resulting in a 1,459.95 meter, ten hole core program. However, MTA employed atomic absorption analysis for their gold assays, which may not report the "total" gold content. As part of the EMX's technical due diligence assessment, drill sample pulps were acquired from MTA and submitted to ALS Chemex for re-analysis by fire assay to determine the "total" gold content.
A total of 907 out of 1,142 original MTA sample pulps (79.4%) were located and re-assayed (no pulps were recovered for holes ES-5 or ES-7/1). The Company's fire assay re-analysis yielded an average grade of 1.822 g/t gold, representing a 29.2 percent increase in the mean grade for significant gold intervals with available pulp material. A revised table of significant MTA gold intercepts is summarized below.
Significant MTA drill intervals at a nominal 0.3 g/t Au cutoff and minimum length of 7 meters.
EMX's initial 2004 core drill program focused on the zones of intensely altered and gold mineralized volcanic rocks drilled by MTA. These zones are characterized by extensive hydrothermal brecciation, silicification, and vuggy silica that host gold in the mineralized system. The 2004 program totaled 965.05 meters in eight diamond drill holes (Sis-1 through Sis-8). The mineralized system is typically oxidized from the surface to depths of 50 to 100 meters, with mixed oxide and sulfide intervals encountered as pods and lenses.
The Company's 2005 drilling consisted of four core holes totaling 520 meters (Sis-9 through Sis-12). All four holes were drilled to the northwest of previously drill-defined gold mineralization, and were collared in Quaternary colluvium that conceals the underlying alteration system. The 2005 holes all encountered anomalous gold or copper intercepts.
Two of the holes, Sis-10 and Sis-11, are step-outs to the northwest that intersected extensive hydrothermal brecciation, silicification, vuggy silica and oxide gold mineralization. The other two holes, Sis-9 and Sis-12, targeted the deeper "roots" of the system. These holes were collared up to 140 meters topographically below Sis-10 and Sis-11, and intersected advanced argillic alteration transitioning to phyllic alteration with anomalous copper. The alteration and mineralization intersected in Sis 9 and Sis12 is typical of the transition from upper level gold mineralization to a deeper copper zone.
EMX's 2007 drill program totaled 955.85 meters in six diamond drill holes (Sis-13 through Sis-18), and was designed to test extensions to the East and West mineralized zones. Drill holes Sis-13, Sis-14, Sis-15, and Sis-18 were drilled in the East Zone.
Three of the East Zone holes (Sis-13, -14, and -15) encountered significant oxide gold mineralization starting at the surface, and extend the zone 50 to 75 meters up-dip and to the west. Sis-14, -15, and -18 also intersected anomalous copper and/or molybdenum porphyry-style mineralization at depth.
The West Zone drilling consisted of holes Sis-16 and Sis-17, and tested rock chip-channel and soil gold anomalies hosted by the Evliya Tepe silica cap topographic high. Sis-16 encountered significant gold mineralization starting from the surface. Sis-17 intersected multiple zones of significant oxide gold mineralization. Both West Zone holes extended the drill defined gold mineralization over 100 meters down-dip and to the west, and also intersected anomalous molybdenum and/or copper porphyry-style mineralization at depth.
EMX's 2008 Sisorta drill program continued to extend the size of the drill-defined oxide gold zones and provided further data to support the presence of a copper porphyry target at depth. The mineralized zones remain open in all directions, as only a small portion of the broader target region has been drilled. Significant drill intervals calculated at a nominal 0.300 g/t gold cutoff and minimum length of 7.0 meters, with a maximum of 3.5 meters contiguous dilution. Reported intervals are approximately true thickness.
EMX's 2009 drill program recommenced drilling on the property in June. The emphasis of the program will be on the drill-testing of extensions to the existing resource area, where geology, geochemistry and IP geophysics indicate zones with similar characteristics to currently drill defined gold mineralization. A detailed summary of drilling intercepts can be found at the following link (Sisorta drill summary.pdf).
Eurasian Minerals Inc. (the "Company" or "EMX") is pleased to announce the initial NI 43-101 mineral resource estimate for the Sisorta joint venture project totaling 91,000 indicated and 212,000 inferred gold ounces (see summary tables below). Near-surface, oxide mineralization represents 76% of the indicated gold ounces, and 73% of the inferred gold ounces. Preliminary metallurgical test work suggests that the oxide material is amenable to heap leach extraction. The East Zone hosts 83,000 indicated gold ounces (2.81 million tonnes averaging 0.92 g/t Au at a 0.4 g/t cutoff), where mineralization starts directly at the surface. Scoping is to be carried out on the amenability of this zone for a small scale heap leach operation. The Sisorta property has additional drill ready targets that are scheduled for follow-up during the 2009 field season. Please see news release dated June 16, 2009 for more details or click here.
Indicated mineral resources at 0.4 g/t gold cutoff.*
Inferred mineral resources at 0.4 g/t gold cutoff.*
*Differences in tonnes, average grade, or total gold ounces may occur due to rounding.
The NI 43-101 and JORC compliant mineral resource was estimated by independent Qualified Person, Gary Giroux, of Giroux Consultants Ltd., Vancouver, Canada. The drill delineated resource area measures 1.10 by 1.45 kilometers, and includes five separate gold mineralized zones. The Sisorta resource estimate is reported at a 0.4 g/t gold cutoff.
EMX, in conjunction with joint venture partner Chesser Resources Limited, initiated a 8000 meter drilling program at Sisorta in May 2008. The 2008 program is designed to delineate the shallow, oxide gold resource potential, and will be funded by Chesser as part of their earn-in commitment. Chesser is continuing exploration at Sisorta into 2009 and has made arrangements to pay EMX the next tranche of cash (US $100,000) and shares (1,150,000).
The geology is dominated by intensely altered volcanic and intrusive rocks with multiple zones of hydrothermal brecciation and silicification. These altered volcanic rocks and breccias are associated with significant levels of gold and copper mineralization.
The alteration and geochemistry of the system are consistent with a high sulfidation gold-enriched deposit model. From the Company's drill results, oxide gold mineralization generally occurs from the surface to depths ranging from 23 to over 100 meters, with tenors over significant intervals ranging from 0.47 g/t to over 5 g/t gold. In addition, drill holes targeting the deeper extent of the system intersected porphyry-style alteration and anomalous copper mineralization.
Maden Tetkik ve Arama ("MTA"), Turkey's General Directorate of Mineral Research and Exploration, conducted a drill exploration program on the Sisorta property from 1995 through 1998, resulting in a 1,459.95 meter, ten hole core program. However, MTA employed atomic absorption analysis for their gold assays, which may not report the "total" gold content. As part of the EMX's technical due diligence assessment, drill sample pulps were acquired from MTA and submitted to ALS Chemex for re-analysis by fire assay to determine the "total" gold content.
A total of 907 out of 1,142 original MTA sample pulps (79.4%) were located and re-assayed (no pulps were recovered for holes ES-5 or ES-7/1). The Company's fire assay re-analysis yielded an average grade of 1.822 g/t gold, representing a 29.2 percent increase in the mean grade for significant gold intervals with available pulp material. A revised table of significant MTA gold intercepts is summarized below.
|
EMX Fire Assay Results |
|
MTA Atomic Absorption Results |
||||||
Hole ID |
From |
To |
Interval (meters) |
Au (g/t) |
% re-assayed |
From |
To |
Interval (meters) |
Au g/t |
ES-1 |
No significant intervals |
99 |
No significant intervals |
||||||
ES-2 |
No significant intervals |
94 |
No significant intervals |
||||||
ES-3 |
0.00 |
27.90 |
27.90 |
2.999 |
91 |
0 |
24.85 |
24.85 |
2.54 |
Including |
0.00 |
20.80 |
20.80 |
3.794 |
0 |
20.80 |
20.80 |
2.90 |
|
ES-3 |
36.85 |
44.70 |
7.85 |
0.394 |
No significant intervals |
||||
ES-4 |
4.35 |
49.05 |
44.70 |
1.138 |
87 |
4.35 |
48.05 |
43.70 |
1.06 |
Including |
4.35 |
13.85 |
9.50 |
2.022 |
4.35 |
13.85 |
9.50 |
1.81 |
|
ES-5 |
No samples available for re-assay |
0 |
1.00 |
15.45 |
14.45 |
0.63 |
|||
ES-6 |
0.00 |
26.40 |
26.40 |
1.766 |
76 |
0.0 |
24.25 |
24.25 |
1.74 |
Including |
0.00 |
12.65 |
12.65 |
3.267 |
0.0 |
12.65 |
12.65 |
3.02 |
|
ES-7/1 |
No samples available for re-assay |
0 |
No significant intervals |
||||||
ES-7/2 |
0.80 |
14.30 |
13.50 |
0.320 |
45 |
No significant intervals |
|||
ES-8 |
0.00 |
15.20 |
15.20 |
0.922 |
100 |
1.05 |
10.5 |
9.45 |
0.54 |
ES-9 |
1.30 |
61.8 |
60.50 |
1.493 |
100 |
|
|
|
|
Including |
1.30 |
21.25 |
19.95 |
3.280 |
1.3 |
22.65 |
21.25 |
2.15 |
|
EMX's initial 2004 core drill program focused on the zones of intensely altered and gold mineralized volcanic rocks drilled by MTA. These zones are characterized by extensive hydrothermal brecciation, silicification, and vuggy silica that host gold in the mineralized system. The 2004 program totaled 965.05 meters in eight diamond drill holes (Sis-1 through Sis-8). The mineralized system is typically oxidized from the surface to depths of 50 to 100 meters, with mixed oxide and sulfide intervals encountered as pods and lenses.
The Company's 2005 drilling consisted of four core holes totaling 520 meters (Sis-9 through Sis-12). All four holes were drilled to the northwest of previously drill-defined gold mineralization, and were collared in Quaternary colluvium that conceals the underlying alteration system. The 2005 holes all encountered anomalous gold or copper intercepts.
 |
EMX's 2007 drill program totaled 955.85 meters in six diamond drill holes (Sis-13 through Sis-18), and was designed to test extensions to the East and West mineralized zones. Drill holes Sis-13, Sis-14, Sis-15, and Sis-18 were drilled in the East Zone.
 |
The West Zone drilling consisted of holes Sis-16 and Sis-17, and tested rock chip-channel and soil gold anomalies hosted by the Evliya Tepe silica cap topographic high. Sis-16 encountered significant gold mineralization starting from the surface. Sis-17 intersected multiple zones of significant oxide gold mineralization. Both West Zone holes extended the drill defined gold mineralization over 100 meters down-dip and to the west, and also intersected anomalous molybdenum and/or copper porphyry-style mineralization at depth.
EMX's 2008 Sisorta drill program continued to extend the size of the drill-defined oxide gold zones and provided further data to support the presence of a copper porphyry target at depth. The mineralized zones remain open in all directions, as only a small portion of the broader target region has been drilled. Significant drill intervals calculated at a nominal 0.300 g/t gold cutoff and minimum length of 7.0 meters, with a maximum of 3.5 meters contiguous dilution. Reported intervals are approximately true thickness.
EMX's 2009 drill program recommenced drilling on the property in June. The emphasis of the program will be on the drill-testing of extensions to the existing resource area, where geology, geochemistry and IP geophysics indicate zones with similar characteristics to currently drill defined gold mineralization. A detailed summary of drilling intercepts can be found at the following link (Sisorta drill summary.pdf).
Eurasian Minerals Inc. (the "Company" or "EMX") is pleased to announce the initial NI 43-101 mineral resource estimate for the Sisorta joint venture project totaling 91,000 indicated and 212,000 inferred gold ounces (see summary tables below). Near-surface, oxide mineralization represents 76% of the indicated gold ounces, and 73% of the inferred gold ounces. Preliminary metallurgical test work suggests that the oxide material is amenable to heap leach extraction. The East Zone hosts 83,000 indicated gold ounces (2.81 million tonnes averaging 0.92 g/t Au at a 0.4 g/t cutoff), where mineralization starts directly at the surface. Scoping is to be carried out on the amenability of this zone for a small scale heap leach operation. The Sisorta property has additional drill ready targets that are scheduled for follow-up during the 2009 field season. Please see news release dated June 16, 2009 for more details or click here.
Class |
Metallurgy |
Tonnes |
Au g/t |
Au ounces |
Indicated |
Oxide |
2,280,000 |
0.94 |
69,000 |
Indicated |
Mixed/sulfide |
890,000 |
0.76 |
22,000 |
Total |
Ox/Mix/Sulf |
3,170,000 |
0.89 |
91,000 |
Class |
Metallurgy |
Tonnes |
Au g/t |
Au ounces |
Inferred |
Oxide |
7,750,000 |
0.62 |
154,000 |
Inferred |
Mixed/sulfide |
3,630,000 |
0.49 |
58,000 |
Total |
Ox/Mix/Sulf |
11,380,000 |
0.58 |
212,000 |
The NI 43-101 and JORC compliant mineral resource was estimated by independent Qualified Person, Gary Giroux, of Giroux Consultants Ltd., Vancouver, Canada. The drill delineated resource area measures 1.10 by 1.45 kilometers, and includes five separate gold mineralized zones. The Sisorta resource estimate is reported at a 0.4 g/t gold cutoff.
EMX, in conjunction with joint venture partner Chesser Resources Limited, initiated a 8000 meter drilling program at Sisorta in May 2008. The 2008 program is designed to delineate the shallow, oxide gold resource potential, and will be funded by Chesser as part of their earn-in commitment. Chesser is continuing exploration at Sisorta into 2009 and has made arrangements to pay EMX the next tranche of cash (US $100,000) and shares (1,150,000).