Kaminak Identifies Favourable Alteration and Shearing on its Hemlo

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Jan. 10, 2008) - Kaminak Gold Corporation (TSX VENTURE:KAM) today announced the company has completed its initial field program on its 100% owned Hemlo North Gold Project. A three week mapping and prospecting program was followed by an overburden sampling program that targeted hydrothermally altered shear zones.

Key Point Summary

- Field mapping and overburden sampling successfully recognized sulphide bearing shear zones within felsic volcanic host rocks

- Favourable trace element enrichment of Ag, As, K, Ba and Mo within shear zones could indicate proximity to Hemlo-style gold mineralization

- Gold grain counts, sulphide mineralogy and assay results of overburden sampling are expected in the coming weeks

The Hemlo gold camp represents one of the most prolific gold camps in Canada and has remained in continuous production since 1985. In the spring of 2007, Kaminak staked a 21,000 acre land position located directly north of the current Hemlo mine leases and patented claims owned by Teck Cominco Limited, Barrick Gold Corporation and Newmont Mining Corporation. Kaminak's exploration rationale at Hemlo is based on a structurally controlled "shear-zone model". Kaminak's technical team believes that there has been a lack of exploration directed towards shear zones models at Hemlo, thereby creating a new exploration opportunity in this district.

Initial Fieldwork Identifies Altered Shear Zones

Kaminak's field work was completed over a three week period in October 2007 and was supervised by Geovector Management Inc. of Ottawa, Ontario. The main objective of the program was to ground truth interpreted shear zones and areas of interest that were identified in Kaminak's initial desktop study. This field work successfully identified three separate outcropping zones displaying alteration and shearing. A total of 76 rock samples were collected from various outcrops and submitted to ALS Chemex for assay. Although results from all surface samples assayed below 100 ppb Au, ICP analyses from observed shear zones indicated variable enrichment in important pathfinder elements including, As, Ag, K, Ba and Mo which could indicate proximity to "Hemlo-style" gold mineralization.

Much of the Hemlo North property is covered by thick glacial overburden which has prohibited previous companies from efficiently testing the gold potential of the property. Therefore, Kaminak initiated an overburden sampling program in the fall of 2007 over priority shear zone targets. The sampling device drills or penetrates through the unconsolidated overburden and collects samples of basal till and rock samples from the bedrock interface. A total of 15 sites were tested and samples were sent to Overburden Drilling Management (ODM) of Nepean, Ontario for analysis. ODM is expected to complete gold grain counts, identification of sulphide and alteration minerals and assays on till samples and will complete assays on bedrock samples. Results are expected in the coming weeks.

Kaminak's disclosure of a technical or scientific nature is prepared under the supervision of Rob Carpenter, Ph. D., P. Geo., Kaminak's President and CEO. Joe Campbell, P.Geo. of Geovector Management of Ottawa, Ontario is the Qualified Person for the Hemlo North Project under the definition of National Instrument 43-101.

ALS Chemex Analytical Technique

A total of 76 grab samples were collected and shipped to ALS Chemex for geochemical analyses. Rock samples are weighed, dried and finely crushed with a split of up to 250g pulverized. The prepared sample is subjected to four acid digestion (0.4g is digested with nitric, perchloric, and hydrofluoric acids with Hydrochloric acid subsequently added for further digestion. This solution is analyzed by inductively coupled plasma - atomic emission spectrometry. Results are corrected for spectral inter element interferences. QA/QC consists of the insertion of one method blank, two standards and one duplicate sample. This analysis was followed by a gold analysis using a 50g fire assay with ICP-AES finish.

About Kaminak

Kaminak Gold Corporation is a prospect generator employing a joint venture strategy that maximizes opportunities for discovery while attempting to minimize exploration risk to Kaminak. A critical component of Kaminak's business model is working with strong project partners to advance Kaminak's exploration projects. Covering several million acres, Kaminak holds one of the largest land positions in Canada devoted to metallic mineral exploration. Kaminak's projects offer world-class exploration potential and present exposure to strategic commodities including, gold, uranium and nickel.

On behalf of the Board of Directors

Rob Carpenter, Ph. D., P. Geo., President and CEO

Kaminak Gold Corporation

Certain disclosures in this release, including management's assessment of Kaminak's plans and projects, constitute forward-looking statements that are subject to numerous risks, uncertainties and other factors relating to Kaminak's operation as a mineral exploration company that may cause future results to differ materially from those expressed or implied in such forward-looking statements. Readers are cautioned not to place undue reliance on forward-looking statements. Kaminak expressly disclaims any intention or obligation to update or revise any forward-looking statements whether as a result of new information, future events, or otherwise.

The TSX Venture Exchange has not reviewed and does not accept responsibility for the adequacy or accuracy of this release.

Scanning electron microscope design idea and principle, as early as in 1935 had been raised. 1942, the United Kingdom made the first laboratory with a scanning electron microscope, but due to the poor resolution imaging and photography. Long time, so little practical value. Through the efforts of all scientific workers, especially with the advent of electronic industrial technology level has continued to grow,

1956 started the production of goods scanning electron microscope. The last few decades, scanning electron microscopy has been widely used in biology, medicine, metallurgy, and other disciplines in the field, and promote the development of relevant disciplines.

1.n

C) in the sample can be room for three-dimensional samples of the translation and rotation, therefore, of the samples from various angles were observed.

(D) depth of field, three-dimensional images rich flu. SEM depth of field than several hundred times the optical microscope, transmission electron microscope than a few times.

(5) enlarge images of a wide range of relatively high resolution. Can be more than 10 times magnification to hundreds of thousands of times, it basically from the magnifying glass, optical microscope until TEM enlarge the scope. Resolution range between optical microscopy and transmission electron microscopy, up to 3 nm.

(6) the electron beam on the sample smaller degree of damage and pollution.

(7) observed in the morphology at the same time, you also can use a sample from the other signal for micro-components analysis.

2. Scanning electron microscopy of the structure and working principle

(A) Structure

1. Bellows Bellows including electronic guns, condenser, and the lens scanning system. Its role is a very small electron beam (few nm diameter), and so that the electron beam scanning the sample surface, at the same time inspired by various signals.

2. Electronic signals collection and disposal system in the sample room, scanning electron beam interaction with the sample after a variety of signals, including secondary electron, backscattered electrons, X-rays, electronic absorption, Auger (Auger) and electronics. In the above-mentioned signal, it is secondary electron, it is inspired by the incident electron atoms in the samples from the outer electron, in a sample surface following dozens nm nm to the region, mainly depend on its production rate sample morphology and composition. What is commonly known as scanning electron image refers to the secondary electron image, it is to study the sample surface the most useful electronic signals. Detection of the secondary electron detector (Figure 15 (2) of the probe is a scintillator, when the electronic hit on the scintillator, which have a light on, this light is transmitted to the catheter-photomultiplier tubes, optical signal shall into current signal, then the preamp and video amplification, the current signals into voltage signals, the tube was finally sent to the gate.

3. Electronic signals in the display and recording system scanning electron microscope images displayed on the cathode ray tube (CRT), the camera recorded by the camera. There are two tubes, one for observation, the lower resolution is long afterglow of the tube; another camera used to record high resolution, a short afterglow pipe.

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CRT tubes and modulation brightness. tubes in the electron beam on the screen-also for grating scanning, and this movement and the sample surface scanning electron beam scanning strict campaign synchronization, this is being received by the contrast with the relative signal intensity of the scanning electron should be like, which reflects the image of the sample surface morphology. section scanning electron microscopy of biological sample preparation techniques are the majority of biological samples containing water, and Comparison of soft, therefore, in scanning electron microscopy, the samples should be dealt with accordingly. scanning electron microscopy sample preparation is the key requirements: to enable the sample surface structure preservation, no deformation and pollution, and a sample drying excellent conductive properties.

1. Initial processing of samples

(1) the basic requirements based based TEM sample preparation and the same can refer to chapter 14 of ultrathin sections mentioned in the technical requirements.n

For easy curly samples such as blood vessels, gastrointestinal mucosa, can be fixed in the filter paper or card, to be seen to fully exposed surface of the organization.

(B) samples by scanning electron microscope cleaning is often the site of the sample surface, the organization of free surface. The samples taken from the biopsy, the surface often blood, tissue fluid or mucus attachment, which will cover samples of the surface structure and impact of observation. Therefore, in the fixed samples before, it is necessary to clean these fixtures. Cleaning methods are as follows:

1. With isotonic saline or buffer cleaning;

2. 5% of the soda cleaning;

3. Ultrasonic shock or enzyme digestion method for processing.n

Cleaning method is to soak in the samples with good cleaning fluid, and at the edge shocks soak 30 minutes bell, with the final double distilled washed three times. by any cleaning method, pay attention to when not in the washing injury samples.

(C) Fixed fixed by the TEM sample preparation reagents and the same common dual-acid glutaraldehyde and osmium fixed. The sample size, fixed period of time should be extended. Can also be frozen quickly fixed.

(4) dehydration after the sample was rinsed with higher concentration levels of alcohol or acetone dehydration, and then enter the intermediate solution, which tends to be used isoamyl acetate solution for the middle.

2. Scanning electron microscope samples of dry samples require high vacuum. Whether water or dehydration solution, in a high vacuum will be keen to vaporize, not only affects the vacuum, contaminated samples, the samples will be destroyed micro-structure. Therefore, the sample must be carried out by electron microscopy before drying. Drying method as follows:

(1) air drying air drying method known as natural drying method, that is, the dehydration of samples exposed to the air so dehydrating agent will move gradually drying volatile. The biggest advantage of this method is simple, convenient and time-saving; Its main shortcoming is in the drying process, the organization will be volatile because of dehydration when the role of surface tension arising from contraction deformation. Therefore, the method is generally applicable to a hard surface samples.

(B) the critical point drying critical point drying method is to use material in the critical state, and its surface tension of zero to complete vaporization of the liquid sample, and to swap gas Pai way to achieve the purpose of completely dry. Surface tension so as to prevent the impact of better preserved samples of micro-structure. This method is more convenient, by the time not long, generally about 2 to 3 hours to complete, it is the most commonly used method of drying. However, this method requires special equipment.

Critical point drying is the critical point drying in the instrument, the steps are as follows:

1. Fixation, dehydration: According to conventional methods. Samples such as the dehydration of ethanol is used in the dewatering to 100% after use pure acetone replacement 15 to 20 minutes.

2. Into the middle of: pure acetone into the middle of isoamyl acetate, for about 15 to 30 minutes.

3. Samples moved to Room: samples from isoamyl acetate extracted Add to sample box, and then moved to the critical point drying the sample-indoor, back cover and tightened to prevent leakage.

4. Liquid carbon dioxide replacement isoamyl acetate: to achieve critical state (31 (C, 72.8 atm), the temperature will rise to 10 (C, the liquid carbon dioxide gasification, and then open a gas valve, gradually emit gases, completely dry samples.

(C) The freeze-drying method is to freeze-drying of samples frozen under high vacuum, the samples removed by sublimation of water or dehydrating agent process. Freeze-drying is based on the sublimation of ice from the sample, that is, water directly from the solid into gaseous, liquid through the middle, does not exist between the gas and liquid surface tension on the role of samples, thus reducing the drying process in the sample damage. Freeze-drying method there are two types, namely, water samples and samples directly freeze-drying dehydration after freeze-drying.

1. Freeze-drying water samples directly Law

1.1 based fixed: According to conventional methods.

1.2 Protection of frozen in place: The samples were frozen under the protection of immersion in a few hours.n

After dealing with the protection of the sample quickly put to use pre-cooling liquid nitrogen (150 (C of Freon refrigerants, so that samples of the water to freeze quickly.

1.4 Drying: the samples have been frozen, freeze drying has been moved to the pre-cooling the sample stage, vacuum, as a few hours or a few days, that is to dry samples.

This method does not require dehydration and avoid the organic solvent extraction composition of the samples, the samples will not contraction, but also the methods used earlier. However, due to spend a long time and liquid nitrogen consumption, prone to ice damage, it is not widely used.

2. Samples dehydration after freeze-drying samples with ethanol or acetone dehydration after the transition to some volatile organic solvents, these solvents together with the then frozen and vacuum distillation and drying reached. And the former method of comparison, this method has the advantage that no ice damage,

And drying time is short. Inadequacies of the organic solvent extraction components of the samples, resulting in loss of contents. Acetonitrile (acetonitrile) vacuum drying method: This is a use of acetonitrile in the rapid evaporation cooling curing will be the nature of the sample drying method. His steps are as follows:

(1). Fixed, washed: According to conventional methods.

(2). Acetonitrile replacement: the use of 50%? 70% - 80% - 90% acetonitrile solution replacement, the last 100% acetonitrile replaced every 15 steps to 20 minutes.

(3). Drying: self-purity and self acetonitrile, Add-vacuum coating vacuum, acetonitrile and samples in a vacuum quickly refrigeration and frozen (freezing temperature (45 (C), into solid ice-like . vacuum and continue to freeze the sublimation of acetonitrile, about 30 minutes, which amounts to dry samples.

Visco-dried samples in the sample to the stage. For non-coated samples and direct observation, we must use a conductive adhesive to cement For coating to the sample, the glue can be used to replace or Monaijiao, tiny samples such as powders, fibers can also be used to double-sided adhesive tape paste.

3. Conductive sample handling biological samples after dehydration, drying, the surface is not charged, conductive poor performance. Using scanning electron microscopy, when the incident electron beam hitting the sample, the sample surface in the accumulation of charge, a charge and discharge effects, impacts on the image of observation and photographing record. Therefore, in a conductive observed prior to treatment, the sample surface conductivity. Conductive commonly used method as follows:

(1) metal coating of metal coating used is the special devices will be small resistivity of metals, such as gold, platinum, palladium, and other coverage after evaporation method in the sample surface. Samples of metal plating membrane, can not only prevent the charge, discharge effect, electron beam can also reduce the damage of the samples, the increase in secondary electron production rate, and good image.

1. Vacuum coating method vacuum coating method is the use of vacuum-the membrane. Its principle is under high vacuum to be depositing the metal heating, when heated to above the melting point, will be evaporated into extremely small particles sprayed on the sample to the sample surface of a metal film, the sample conductivity. Spraying with the metal material should choose low melting point and chemical properties stability under high temperature and high tungsten ineffective and the secondary electron production rate, the film does not have a structure. Now generally used gold or gold and carbon. In order to obtain fine particles useful platinum or gold - palladium and platinum - palladium alloy. Metal film thickness of 10 nm to 20nm. Law vacuum coating formed by membrane, coarse particles of metal, not even film, the more complex and time-consuming operation, has seldom use.

2. Ion sputtering deposition in low vacuum (0.n

Zhe) state, in the anode and cathode electrodes between the two hundreds supremacy kV DC voltage, between the electrodes will produce glow discharge. In the discharge process, the gas molecules are ionized into with the positively charged cations and the negative with electronics, and the role of the electric field, was Jiasubo cation to the cathode, anode to the electronic be Jiasubo. If the cathode electrode with a metal (often referred to the target pole), then the impact on its cationic surface, the surface will be made of metal particles, a phenomenon known as sputtering. At this time was sputtering of metal particles is neutral, that is not the role of the electric field, and on the role of gravity whereabouts. If the samples will be placed below the sputtering of metal particles will reach the sample surface, forming a layer of metal film, use this method to the sample surface coating, known as ion sputtering deposition method, Figure 15 (3 shows The principle of the Act.

Figure 15 (3 ion sputtering deposition method schematic and vacuum coating method, the ion sputtering deposition method has the following advantages: (1) As from splashing out on the cathode of the metal particles are inconsistent with the direction and, therefore, metal particles access to the sample surface cracks and depression, so that the sample surface evenly plated with a layer of metal film, the uneven surface samples, but also to create good metal membrane, and the smaller particles (2) the impact of radiant heat small, the damage to small sample (3) consume less metal (4) the low vacuum, and save time.

(B) organization of conductive metal coating surface conductivity of the samples, require special equipment, operating more complicated, the samples at the same time a certain degree of injury. In order to overcome these deficiencies, some of conductive tissue (also known as the conductivity method), namely, the use of certain metal in the solution of biological samples of protein? Lipids and carbohydrates, such as the combination of ingredients, so that the sample surface or a conductive ionized good performance of metal salts compounds, thereby enhancing electron beam bombardment samples tolerance and the ability of conductivity.

This method is the basic process will be fixed after cleaning the samples with a special reagent can be observed after treatment. Because without a metal coating, can not only save time, but also improve resolution, but also with tenacity organizations to strengthen the role of the fixed effect.

Conductive Organization Act mainly potassium iodide staining conductive, potassium iodide - conductive lead acetate, tannins - osmium acid conductive law. More common is the tannins - osmium acid conductivity, the specific methods of operation are as follows:

(1). Sample: based on conventional methods, washing and using glutaraldehyde fixation.

(2). Conductive staining: sample Add 2 to 4 percent tannins in the soaking solution. If you look at the surface structure, soak for 30 minutes; If you look at the internal structure, soaking time for eight hours can be overnight. In the immersion process, a solution can be replaced.

(3). Cleaning and re-fixed: phosphate buffer fully cleaned, and then Add 1% osmium acid fixed 2 to 4 hours, and then phosphate buffer cleansing.

(4). Dewatering and drying: According to conventional methods.

(5). Scanning electron microscopy.

4. Several special sample preparation technique

(1) the internal structure of cells frozen cut law

1972, a Japanese scholar Tanaka King resin used frozen cells will be open cut method by scanning electron microscopy of the internal structure. Later, he once again DMSO instead of resin frozen cut off the success of the method is simple and clear structure has been widely used. Its methods of operation are as follows:

1. Based and fixed: In order to make clear cell structure, not too much blood cells pollution, based in the perfusion method used before washing. That the first animal anesthesia, the saline injected into the abdominal aorta or low molecular weight on the right side, cut the inferior vena cava blood to a blood date.n

M phosphate buffer solution (pH7.4) cleaned twice, each time for 10 minutes.

2. Dimethyl sulfoxide soak: Add samples were 25%, 50% DMSO solution, soak 30 minutes.

3. Cut: TF-1 device frozen sever cut. Then the samples will be cut into 50% DMSO, such as melting after using 1 / 15 M phosphate buffer immersion, each 10 minutes, 5 times of change.

4. After softening and fixed: 0.1% osmium samples Add acid softening temperature 20 (C, in 48 to 72 hours. Then fixed with 1% 8 1 hour, double-distilled water immersion 1 hour, for several of need thoroughly cleaned.

5. Conductive staining: Add 2% of the sample tannins in two hours (or overnight), double-distilled water to clean one hour, for several liquid. Then fixed with 1% 8.30 30 to 60 minutes, double distilled water to clean one hour.

6. Dewatering, drying and coating: According to conventional methods.

(B) In order to study the technical mold cavity organs especially the vascular system of complex three-dimensional distribution, a first cavity injection forming substances, the question of the organization after hardening corrosion removed, and the rest of forming blood vessels that can display The three-dimensional distribution system, the technology that casting technology. If it is on vascular system, known as vascular casting. Casting techniques used specimens, after coating, allows for scanning electron microscopy.

Casting agents have used methyl acrylate, polystyrene and ABS, etc., as well as copolymers. ABS is a kind of resin, acrylic, sunny, butadiene and styrene copolymer, and is regarded as more ideal casting agent. Below brief produced by ABS vascular casting specimens:

1. Perfusion agent and injection mold first will be ready to remove the organ perfusion or maintaining natural position, to find artery, vein or glass tube inserted needle, and ligation of coarse thread, using ordinary water or brine temperature of the blood vessels will be clean .n

Injection mold of the organ can be on 50 (C-60 (C soaking in the warm water about six hours, this prototype can maintain the organ, but also help mold the hardening agent.

2. Corrosion and cleaning specimens were Add 10% to 20% sodium hydroxide or potassium hydroxide solution corrosion, but also put 20% to 30% hydrochloric acid corrosion. Generally 5 to 7 days.n

C, mold can become soft, easy anatomy and cut.

4. Drying and coating will be cut from the mold washed with distilled water, after using the filter drain release 37 (C-box 30 to 60 minutes, the final release in the drying cylinder preservation. Wet vacuum coating can be used, can also be used ion plating film, with the former method. coating can be used after the scanning electron microscope.

(C) hydrochloride chemical digestion method to be observed on the cell surface and deep basal cell surface, hydrochloric acid can be prepared by chemical digestion samples.

1. Fixed and cleansing: with the conventional method.

2. Hydrochloric acid digestion: 8 mol / L HCl digest and corrosion, temperature and time varies according to different organizations.

3.n

Field Ion Microscopy (FIM) ultrahigh vacuum atomic level 30 to 80 K with atoms thickness In addition, the technology itself, the SPM is a relatively simple device, the size of filial piety cheaper, lower environmental requirements on the installation of the sample without special requirements, like the system easy to detect fast, simple features such as SPM at the same time the day-to-day maintenance and operation costs are very low, therefore, the invention of an SPM technology, nano-technology driven rapid development, and in a very short period of time to be widely applied.

Additional information :

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