Vancouver, B.C., February 10, 2016. Desert Star Resources Ltd. (TSX-V: DSR) (“Desert Star” or the “Company”) has completed 760.17 meters of exploration drilling on the Copper King project in the Superior district of Pinal County, Arizona. The Company completed two drill holes (Table 1) within a large porphyry-style alteration footprint that contains historic copper workings and a coincident IP geophysical anomaly.The distribution and intensity of high temperature alteration (e.g., secondary biotite and potassium feldspar) decreases down-hole in CKD-001, and sulphide mineralization (e.g., pyrite, trace chalcopyrite) is weak throughout the hole.CKD-002 intersected unaltered to weakly altered rock with trace to weak pyrite.These two drill holes spaced approximately 450 meters apart do not contain sufficient evidence supporting porphyry copper mineralization at depth to warrant continued drilling at this time. The Company will continue to review the results from the Copper King project, and drill sites CKD-001 and CKD-002 have been reclaimed in a manner that will permit Desert Star to re-enter the holes in the event that a deeper target is identified in the future.
Desert Star expects to commence drilling on its Red Top project in the next few weeks (pending receipt of its drill permit), and will provide updates accordingly.
|Drill Hole||Easting||Northing||Elevation||Azimuth||Dip||Length||Start Date||End Date|
Table 1. Collar data for Copper King drilling.
The Copper King project contains largely phyllic-related alteration mineral assemblages (marble-serpentine-calc-silicates and quartz-sericite-pyrite) in the east at high elevations, to phyllic with local zones of potassic alteration (secondary biotite) to the west at lower elevations.In the south-central portion of the Copper King claim block at the lowest elevations, this alteration is present in Pinal Schist, diabase and quartz diorite, which are all considered prospective host rocks for Laramide-age mineralization.This area also contains a marked IP chargeability high (up to 25ms) feature that is coincident with a resistivity low (<10 to 600 ohm-m).
Diamond drilling was conducted in this area in order to test for porphyry copper mineralization associated with the surface alteration at depth.A total of two holes were drilled at a spacing of approximately 450 meters.Porphyry deposits form from large hydrothermal systems which produce systematic changes in alteration, metal zonation, sulphide volume percent, and sulphide minerology which are discernible through core logging and geochemical analyses.Diamond drill core from the Copper King project was carefully examined both visually, as well as geochemically through the use of a portable X-Ray Fluorescence (XRF) analyser. The drill core was examined for positive systematic changes down-hole (e.g. increasing intensity/temperature of alteration, pyrite content, pyrite:chalcopyrite ratio, copper:zinc ratio, and lead:zinc ratio etc.).
Diamond drill hole CKD-001 was drilled to a total depth of 428.85 meters.The top 107 meters contained high temperature, moderate to strong potassic alteration (secondary biotite) in diabase, quartz diorite, and Pinal Schist, centered on a porphyritic diorite intrusion (70.50-74.1 meters). This interval contained pyrite disseminations, veins and clots (~2% by volume), in addition to trace chalcopyrite.
Figure 1.Copper King geology and IP chargeability (-500 meter depth).
Below this interval, the drill hole transitioned into lower temperature alteration (chlorite-epidote-magnetite-carbonate) with sporadic intervals of pyrite hosted in Pinal Schist and subordinate diabase.The lower temperature alteration assemblage and inconsistently developed pyrite mineralization in CKD-001 led to the decision to abandoned the hole at 428.8 meters, after drilling ~96.5 meters into the chargeability feature (starting at 332 meters depth). DSR concludes that the chargeability feature at depth at CKD-001 is a result of 0.5-2% pyrite.
Drill hole CKD-002 is located approximately 450 meters southwest of CKD-001 and has been drilled in order to test a different region of the coincident favourable geology, alteration and IP geophysical features.CKD-002 contains low temperature alteration (chlorite-epidote-magnetite-carbonate) in quartz diorite, andesite and minor intervals of diabase.This alteration is consistent with that which forms distal to porphyry copper mineralization.In order to ensure the alteration and sulphide mineral content was not increasing systematically down hole, drilling was completed to a total depth of 331.32 meters.CKD-002 did not intercept significant sulphide mineralization (trace to locally up to 1%), and is dominated by low temperature alteration mineral assemblages with no systematic change down hole.
Daniel MacNeil, MSc PGeo, a Qualified Person as defined by National Instrument 43-101, has read and approved all technical and scientific information contained in this news release. Mr. MacNeil is the Company’s Vice President, Exploration.
About Desert Star
Desert Star is a Vancouver-based mineral exploration company focused on the identification, acquisition and development of copper and gold projects located in top-tier mineral belts in the southwestern United States that contain significant historical production, existing mining infrastructure and an established mining culture.
President and CEO, Desert Star Resources Ltd.
Cautionary Note Regarding Forward-Looking Statements
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This news release contains certain statements that may be deemed “forward-looking statements”. Forward-looking statements are statements that are not historical facts and are generally, but not always, identified by the words “expects”, “plans”, “anticipates”, “believes”, “intends”, “estimates”, “projects”, “potential” and similar expressions, or that events or conditions “will”, “would”, “may”, “could” or “should” occur. Although Desert Star believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance, are subject to risks and uncertainties, and actual results or realities may differ materially from those in the forward-looking statements. Such material risks and uncertainties include, but are not limited to, Desert Star’s ability to raise sufficient capital to fund its obligations under its property option agreements, to maintain its mineral tenures and concessions in good standing, to explore and develop its projects, to repay its debt and for general working capital purposes; changes in economic conditions or financial markets; the ability of Desert Star to obtain the necessary permits and consents required to explore, drill and develop the projects and if obtained, to obtain such permits and consents in a timely fashion relative to Desert Star’s plans and business objectives for the projects; the general ability of Desert Star to drill test its projects and find mineral resources; if any mineral resources are discovered or acquired, the Company’s ability to monetize any such mineral resources; and changes in environmental and other laws or regulations that could have an impact on the Company’s operations.Forward-looking statements are based on the reasonable beliefs, estimates and opinions of Desert Star’s management on the date the statements are made. Except as required by law, Desert Star undertakes no obligation to update these forward-looking statements in the event that management’s beliefs, estimates or opinions, or other factors, should change.