On July 12, 2010, Stans announced the first results of its geophysical program. Given the visual nature of geophysical images, Stans had its consultants create a video for the press release.
The following is a detailed explanation of the geophysical images and their significance to the potential of the Aktyuz Ore Field.
Chargeability Bird’s Eye View at 2293 m
First Drill Target – Cross Section 63 - Kutessay III
The geophysical survey done over Kutessay II and Kutessay III was a dipole-dipole induced polarization survey along with a magnetometer and surface gamma-spectrometry done by Tien Shan Ltd. T, K, U, KT, and M represent Thorium, Potassium, Uranium, the relationship between Potassium and Thorium, and Magnetism, respectively. These measurements are taken on surface. When compared to Kutessay II, and other explored areas in the Aktyuz Ore field along the major east-west fault, spikes in Thorium, combined with magnetic lows have proven to be a good indication of rare earths coming to surface.
Chargeability – In time domain IP measurements, the ratio of the secondary voltage measured during the current off-time to the primary voltage measured during the current on-time is related to the electrical polarizability of the rock and is called chargeability. A high chargeability response is an indication of the presence of metallic sulphides and oxides.
Resistivity – Resistivity is the property of a material that resists the flow of electrical current. The resistivity image is created through the observation of electric fields caused by current introduced into the ground.
(Note that generally, rare earths are not correlated with sulphide mineralization, but given that Kutessay II’s polymetalic structure is mixed with the rare earths, these deposits are unique, and should not necessarily be compared to other rare earth deposits around the world. Given the proximity of Kutessay II and III, in this case, rare earths could be associated with sulphides that are indicated in the chargeability highs)
This chargeability image depicts the horizon at 2338 m above sea level. The black outline indicates the planned outline of the edge of the Kutessay II pit, with the shaded area representing the bottom. Each cross cut number 58 through 76 was run to create vertical images to a depth of roughly 400 m. Crosscuts 62-65 represent the newly defined drill target
This chargeability image depicts the horizon at 2293 m above sea level. The black outline indicates the planned outline of the edge of the Kutessay II pit, with the shaded area representing the mineralization in the bottom of the pit. Each cross cut number 58 through 76 was run to create vertical images to a depth of roughly 400 m. Crosscuts 62-66 represent the newly defined drill target. When compared to horizon 2238, one can see that the chargeability levels widen and strengthen to depth.
This map is used to compare the geophysical results in Kutessay III, to the past producing mine, Kutessay II. Thorium spikes correspond with magnetic lows and acts as a good indicator of rare earths of surface. The chargeability high, corresponding with the resistivity low suggests a highly conductive zone of sulphides with strong levels of mineralization.
Elevated thorium levels between 500 and 750 matches the magnetic low, and suggests the presence of rare earths. The chargeability high matches the resistivity low that suggests a metallic presence that expands to depth. There also appears to be a corresponding deep zone off the map to the right. The tip of this structure appears to graze the surface, and so surface work could help to indicate what is below.
Thorium levels between 1250 and 750 indicate a slight raise that corresponds to a magnetic low. This image suggests the dome-shaped mineralization does not actually reach the surface though, and so compared with other cross-sections in the area, elevated thorium levels should not be expected. The resistivity high suggests a change in the rock type to perhaps a quartz-rich mineralization, compared to cross section 65. The chargeability high is quite broad compared to the Kutessay II pit, but similar in that it also expands and strengthens at depth.
This area is the location of the first planned drill hole. A Thorium high corresponds to a magnetic low. The chargeability indicates sulphides reaching the surface, and strengthening to a depth of below 400 m. Extreme resistivity highs indicate a unique rock structure compared to its surroundings and suggests there is a cap rock 75 m below surface that prevented mineralization from penetrating through to the surface. The separation of the intense resistivity zones is likely caused by the main east-west fault.
The high spikes in Thorium content, in combination with the magnetic lows indicate that rare earth mineralization likely comes to surface. The chargeability image indicates a pipe of sulphide mineralization reaches the surface. Extreme resistivity highs indicate a unique rock structure and suggest there is a cap rock 75 m below surface that prevented mineralization from penetrating through to the surface.
The main east-west fault represents the priority target for the ‘Aktyuz Ore Field’s’ exploration program. The theory from Soviet geologists was that this fault zone is the source of most mineralization in the area, and dome-shaped mineral structures could exist in many areas below the surface. The geophysical results from Kutessay III suggest Soviet geologists were correct, but they never drilled deep enough to find additional significant zones as seen in these current surveys as most holes were only drilled vertically to 50 meters.
For a detailed explanation of the Geophysics used, please download the following translated document:
Link to document Geophysical Methodology.doc
PROGNOSTICATED RESOURCES OF THE AKTYUZ LICENSED AREA
Geological Sketch Map of the Aktyuz licensed area
1 – Quaternary sediments; 2 – Middle Paleozoic rhyolite; Precambrian metamorphic rocks: 3 – schist and amphibolite of Paleoproterozoic Kuperlisai Formation; 4 – gneiss of Archean Aktyuz Formation; Permian-Triassic intrusive rocks: 5 – granophire; 6 – subalkali leucogranite of the Kuperlisai pluton; 7 – syenite; Middle Paleozoic intrusive rocks: 8 – diorite and quartz diorite; 9 – granodiorite and granite; Precambrian metabasic rocks: 10 – amphibolite and gabbro-amphibolite; 11 – metagabbro and metadiabase; 12 – postmineral quartz lenses; 13 – faults; 14 – section line; 15- Aktyuz licensed area contour.
Major faults (letters on the map): (A) West Kuperlisai, (B) East Kuperlisai, (C) Kutessai, (D) Cholonsai, (E) Anjilga, (G) Aktyuz-Karabatnak, (L) Rudny, (K) Kvartsevy, (M) Yuzhny, (N) Sienitovy.
Ore deposits and prospects (numerals on the map): (I) Kutessai-I, (II) Kutessai-II, (III) Kutessai-III, (IV) Kuperlisai, (V) Kolesai, (VI) Aktyuz, (VII) Anjilga.
“A qualified person has not done sufficient work to classify the historical estimate as current mineral resources, Stans Energy Corp. is not treating the historical estimate as current mineral resources and the historical estimate should not be relied upon.” Dr Gennady Savchenko QP for Stans Energy Corp., and managing Director for Stans Energy KG.
Geological opinion translated from Russian
This report is long out of date, and should not be relied on for resource calculations. “A qualified person has not done sufficient work to classify the historical estimate as current mineral resources, Stans Energy Corp. is not treating the historical estimate as current mineral resources and the historical estimate should not be relied upon.” Dr Gennady Savchenko QP for Stans Energy Corp., and managing Director for Stans Energy KG was Deputy Chief, Department of Geology & Investment, Kyrgyz State Geology & Mineral Resources Agency; member of Kyrgyz State Mineral Reserves Committee.
Inv. № 0444. Funds of Institute of Geology
of National Academy of Sciences
of the Kyrgyz Republic.
Kharchenko A.D., Khokhlov, A. T., Kim, V.F., Komissarov V.A.
Detailed Information is currently being translated and will be made available soon. In the meantime, please refer to these geological maps.