English J.M.,University of Victoria |
Mihalynuk M.G.,British Columbia Ministry of Energy and Mines |
Johnston S.T.,University of Victoria
Canadian Journal of Earth Sciences | Year: 2010
The northern Cache Creek terrane in the Canadian Cordillera includes a subduction complex that records the existence of a late Paleozoic - Mesozoic ocean basin and provides an opportunity to assess accretionary processes that involve the transfer of material from a subducting plate to an upper plate. Lithogeochemical data from basaltic rocks indicate that the northern Cache Creek terrane is dominated by two different petrogenetic components: (1) a dominant suite of subalkaline intrusive and extrusive rocks mostly of arc affinity and (2) a volumetrically less significant suite of alkaline volcanic rocks of within-plate affinity. The subalkaline intrusive and extrusive rocks constitute a section of oceanic lithosphere that is interpreted to have occupied a fore-arc position during the Late Triassic and Early Jurassic before it was accreted during collisional orogenesis in the Middle Jurassic. Alkaline volcanic rocks in the northern Cache Creek terrane are stratigraphically associated with carbonate strata that contain Tethyan fauna that are exotic with respect to the rest of North America; together, they are interpreted as remnants of oceanic seamounts and (or) plateaux. The volcanic rocks are a minor component of the carbonate stratigraphy, and it appears that the majority of the volcanic basement was either subducted completely at the convergent margin or underplated at greater depth in the subduction zone. In summary, accretion in the northern Canadian Cordillera occurred principally by the accretion of island arcs and emplacement of fore-arc ophiolites during collisional orogenesis. The transfer of oceanic sediments and the upper portions of oceanic seamounts from the subducting plate to an accretionary margin accounts for only small volumes of growth of the upper plate.
Simandl G.J.,British Columbia Ministry of Energy and Mines |
Simandl G.J.,University of Victoria
Mineralium Deposita | Year: 2014
China started to produce rare earth elements (REEs) in the 1980s, and since the mid-1990s, it has become the dominant producer. Rare earth element export quotas first introduced by the Chinese government in the early 2000s were severely reduced in 2010 and 2011. This led to strong government-created disparity between prices within China and the rest of the world. Industrialized countries identified several REEs as strategic metals. Because of rapid price increases of REE outside of China, we have witnessed a world-scale REE exploration rush. The REE resources are concentrated in carbonatite-related deposits, peralkaline igneous rocks, pegmatites, monazite ± apatite veins, ion adsorption clays, placers, and some deep ocean sediments. REE could also be derived as a by-product of phosphate fertilizer production, U processing, mining of Ti-Zr-bearing placers, and exploitation of Olympic Dam subtype iron oxide copper gold (IOCG) deposits. Currently, REEs are produced mostly from carbonatite-related deposits, but ion adsorption clay deposits are an important source of heavy REE (HREE). Small quantities of REE are derived from placer deposits and one peralkaline intrusion-related deposit. The ideal REE development targets would be located in a politically stable jurisdiction with a pro-mining disposition such as Canada and Australia. REE grade, HREE/light REE (LREE) ratio of the mineralization, tonnage, mineralogy, and permissive metallurgy are some of the key technical factors that could be used to screen potential development projects. As REEs are considered strategic metals from economic, national security, and environmental points of view, technical and economic parameters alone are unlikely to be used in REE project development decision-making. Recycling of REE is in its infancy and unless legislated, in the short term, it is not expected to contribute significantly to the supply of REE. © 2014, Her Majesty the Queen in Right of Canada.
News Article | November 2, 2016
VANCOUVER, BC--(Marketwired - November 02, 2016) - Rokmaster Resources Corp. ("Rokmaster" or the "Company") (TSX VENTURE: RKR) is pleased to announce that it has entered into a property purchase agreement dated November 2, 2016 (the "Purchase Agreement") with John (Jack) Denny, Robert Denny and Graeme Haines (collectively, the "Sellers") to acquire (the "Acquisition") a 100% interest in the Duncan Lake Zinc-Lead Property located in the Slocan Mining Division in southeast British Columbia, Canada (the "Property") approximately 64 km north of Kaslo, British Columbia. The Property consists of 9 contiguous mineral claims covering 1,648 hectares along the strike extension of Teck Resources Ltd.'s ("Teck") historical Duncan Mine property and 148 km by road northeast of Teck's smelter in Trail, British Columbia. Closing of the Acquisition is subject to receipt of TSX Venture Exchange ("TSXV") approval. Under the Purchase Agreement, Rokmaster is to provide the following aggregate consideration to the Sellers at closing in exchange for the Property: All of the aforementioned Special Warrants (the "Special Warrants") are subject to an accelerated exercise provision that would result in the Special Warrants being exercised automatically into Common Shares if and when there is: (a) a consolidation, amalgamation, merger or take-over of the Company with, into or by another body corporate that results in the acquisition of at least 66 2/3 of the issued and outstanding shares of the Company for cash consideration, or if for non-cash consideration, as long as the acquisition price is at least a 25% premium to the volume weighted average trading price of the the Company's shares on the TSXV for the five consecutive trading days ending on the trading day prior to the first public announcement of such consolidation, amalgamation merger or take-over; or (b) a transfer of the undertaking or assets of Rokmaster as an entirety or substantially as an entirety to another corporation or entity that is subject to shareholder approval of Rokmaster. In the case of the Series C Special Warrants, if any of the aforementioned events occurred within 10 years from the date of issue thereof, only an aggregate of 6 million Common Shares would be issued to the holders of the Series C Special Warrants upon exercise thereof. The Common Shares to be issued with respect to the Acquisition are to subject to a hold period of four months and one day in accordance with applicable securities legislation. The Consolidated Mining and Smelting Company of Canada, Limited ("Cominco"), a predecessor of Teck, conducted four phases of exploration work on the Property from 1989 to 1997 included coring of 8,333.9 meters in 12 diamond drill holes. The work encountered significantly higher grade zinc-lead mineralization (see below Table of Selected Mineralized Drill Intersections) than was typically encountered at the Duncan Mine and confirmed that altered and mineralized carbonate strata extends from the Duncan Mine northward more than 2.3km and is open to the north, the west limb of Duncan Anticline and to depth on the Property. A further phase of drilling (8,800 meters in 8 holes) was recommended for 1998 but not conducted, possibly due to the steep decline in lead and zinc prices at the time and Teck's increasing involvement in Cominco which had begun in 1986. A re-assessment of the current area covered by the Property north of the Duncan Mine by Cominco geologists indicated that an additional "900 meters of strike length of the structure has the potential to host 5 MMT ("Million Metric Tonnes") of 11.5% Zn and 1% Pb in No. 7 Zone and 2 MMT of 7% Zn and 0.3% Pb in the No. 8 Zone. If the known mineralization is projected 2,100 meters north (in the persistent plunge direction) to Jubilee Point, there is room for 16 MMT at 10% Zn." (D.W. Moore (1997): "Duncan Mine Property: Proposal to Test Attractive Zinc Potential Close to Trail"). It was also noted that the 7 northward plunge of the mineralized zone would be amendable to decline access and underground drilling as proven at the Duncan Mine. The potential quantity and grade stated above is conceptual in nature and there has been insufficient exploration to define a mineral resource. This represents a target for further exploration and it is uncertain if such further exploration will result in the target being delineated a mineral resource. The scientific and technical information about the Property set out in this news release was obtained from a Technical Report for the Property dated July 27, 2016 and prepared for Jack Denny, one of the Sellers, by R.A. (Bob) Lane, M.Sc., P. Geo. (the "Technical Report"). Mr. Lane advises that the geological data set out in the Technical Report was predominantly generated by Cominco during the 1989-1997 period and were recorded exploration assessment reports that were submitted to the British Columbia Ministry of Energy and Mines for property assessment credits. While Mr. Lane advises that he has made no attempt to verify the data, he states in the Technical Report that there is no reason to doubt its accuracy or veracity. Mr. Lane advises that he attempted to examine the drill core from 1989 to 1997 but advised that the observed racked or stacked core was quite disheveled. He stated that more than three-quarters of the core boxes could be recovered and re-racked and following that, the intact core could be verified. Mr. Lane advised that he collected some character core samples and had MS Analytical Laboratories in Langley, British Columbia, analyze the core. Mr. Lane advises that the historic drill data for the Property was adequate and that it provides a sound technical framework upon which future exploration programs could be built. Mr. Lane stated in the Technical Report that the level of QA/QC instituted by Cominco during its four phases of drilling was not known. Mr. John Mirko, President, CEO and Director of Rokmaster, states "This acquisition presents a unique opportunity in a rising zinc market and a stable mining jurisdiction where I have been involved in permitting and constructing several metal mines in the area. This acquisition comes with no cash payments, no work commitments and the significant exploration potential comes drill ready." R.A. (Bob) Lane, M. Sc., P. Geo., a consulting geologist, is a Qualified Person as defined by National Instrument 43-101 Standards of Disclosure for Mining Projects and has reviewed and approved of the technical disclosure in this news release. In connection with the Acquisition, the Company announces that it intends to complete a non-brokered private placement (the "Private Placement") for proceeds up to $1,500,000 through the issuance of 30,000,000 units (the "Units") at a price of $0.05 per Unit. Each Unit will consist of one Common Share and one common share purchase warrant ("Warrant"), with each Warrant being exercisable to purchase one Common Share at a price of $0.06 per share for a period of two years after the date of issuance. The Warrants are subject to accelerated expiry provisions which come into effect when the trading price of the Common Shares on the TSXV closes at or above $0.10 per share during any 10 consecutive trading day period commencing four months plus one day after the date of issuance. In such an event, the Company will give an expiry acceleration notice ("Notice") to Warrant holders and the expiry date of the Warrants will be 30 days from the date of the Notice. The Private Placement is subject to certain conditions, including regulatory acceptance. It is anticipated that officers and directors of the Company will participate in the Private Placement. Finder's fees may be payable in connection with the Private Placement in accordance with TSXV policies. Proceeds raised from the Private Placement will be used to fund initial exploration work on the Property and for general working capital purposes. The Company announces that it is in the process of negotiating share for debt settlement agreements to settle outstanding debt in the aggregate of $1,450,111.25 (the "Debt") owed to directors, officers and certain arm's length creditors. The Company intends to issue 29,002,225 common shares ("Debt Shares") at a deemed price of $0.05 per share to settle the Debt in full (the "Debt Settlement"). The Debt Settlement is subject to TSXV approval. The Debt Shares, if issued, will be issued in reliance on certain prospectus exemptions available under applicable securities legislation and will be subject to a hold period of four months and one day in accordance with applicable securities legislation and TSXV requirements. On behalf of the Board of Directors of ROKMASTER RESOURCES CORP. Neither the TSXV nor its Regulation Services Provider (as that term is defined in the policies of the TSXV) nor any other regulatory authority accepts responsibility for the adequacy or accuracy of this release. This news release may contain forward-looking information within the meaning of applicable securities laws ("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. Information inferred from the interpretation of drilling results may also be deemed to be forward-looking statements, as it constitutes a prediction of what might be found to be present when and if a project is actually developed. These forward-looking statements are subject to a variety of risks and uncertainties which could cause actual events or results to differ materially from those reflected in the forward-looking statements, including, without limitation: risks related to fluctuations in metal prices; uncertainties related to raising sufficient financing to fund the planned work in a timely manner and on acceptable terms; changes in planned work resulting from weather, logistical, technical or other factors; the possibility that results of work will not fulfill expectations and realize the perceived potential of the Company's properties; risk of accidents, equipment breakdowns and labour disputes or other unanticipated difficulties or interruptions; the possibility of cost overruns or unanticipated expenses in the work program; the risk of environmental contamination or damage resulting from Rokmaster's operations and other risks and uncertainties. Any forward-looking statement speaks only as of the date it is made and, except as may be required by applicable securities laws, the Company disclaims any intent or obligation to update any forward-looking statement, whether as a result of new information, future events or results or otherwise.
Johnson M.F.,National Energy Board |
Walsh W.,British Columbia Ministry of Energy and Mines |
Budgell P.A.,National Energy Board |
Davidson J.A.,National Energy Board
Society of Petroleum Engineers - Canadian Unconventional Resources Conference 2011, CURC 2011 | Year: 2011
The Horn River Basin of northeastern British Columbia, Canada, contains natural gas in three Devonian shale units. Isopachs, depths, and net-to gross-pay ratios were determined from well logs for the Muskwa, Otter Park, and Evie Shales and then gridded. Pressure gradients were determined from well test and production data and then gridded into a single grid shared between shales. Because grid points were shared between each grid, volumetric and adsorbed gas equations could be integrated into each grid point. Static values or distributions could then be applied to equation variables and Monte Carlo simulations run to determine probabilistic gas in place (GIP) and marketable resources for each grid point, which were then summed for each shale. Grid points for the isopach and depth maps were treated as static values in the equations while net-to-gross and pressure gradient grid points became most likely values in Beta distributions where end points were assigned using regional low and high values. Most non-mapped variables in the equations were filled with Beta distributions based on typical values in the area and then applied across the basin without any local variations. On each distribution, whether based on mapped or unmapped variables, a second, overlying distribution was applied on a basin scale. This made entire iterations run a full range from pessimistic to optimistic. A few non-mapped variables in the equations were given static values. Recoverable gas resources were estimated by applying a recovery factor to free GIP estimates. Recoverable volumes from adsorbed GIP estimates were determined from a recovery factor applied to the portion of gas that would desorb during production as pressure decreased to the assumed well abandonment pressure. To determine marketable gas, gas impurities and fuel gas that would be used for processing and transport were estimated and subtracted from the recoverable estimates. Further, certain lower quality areas of the basin were excluded from the assessment, based on a low likelihood of being developed. The Horn River Basin shales are estimated to contain 10 466 10 9m 3 (372 Tcf) to 14 894 10 9m 3 (529 Tcf) of GIP with the expected outcome of 12 629 10 9m 3 (448 Tcf). The marketable resource base is expected to be 1 715 10 9m 3 (61 Tcf) to 2 714 10 9m 3 (96 Tcf), with an expected outcome of 2 198 10 9m 3 (78 Tcf). ©Her Majesty the Queen in Right of Canada 2011.
Paradis S.,Geological Survey of Canada |
Keevil H.,University of British Columbia |
Keevil H.,Colorado School of Mines |
Simandl G.J.,British Columbia Ministry of Energy and Mines |
Raudsepp M.,University of British Columbia
Mineralium Deposita | Year: 2015
Many carbonate-hosted sulphide deposits in the Salmo district of southern British Columbia have near-surface Zn- and Pb-bearing iron oxide-rich gossans. The gossans formed when carbonate-hosted, base metal sulphides were subjected to intense supergene weathering processes and metals were liberated by the oxidation of sulphide minerals. Two types of supergene carbonate-hosted nonsulphide deposits, direct replacement (‘red ore’) and wallrock replacement (‘white ore’), are present in the Salmo district. The direct replacement deposits formed by the oxidation of primary sulphides; the base metals passed into solution and were redistributed and trapped within the space occupied by the oxidized portion of the sulphide protore. Depending on the extent of replacement of the sulphides by Zn-, Pb- and Fe-bearing oxides, silicates, carbonates and phosphates, the resulting ore can be called ‘mixed’ (sulphides and nonsulphides) or simply ‘nonsulphide’. The wallrock replacement deposits formed when base metals liberated by the oxidation of sulphides were transported by circulating supergene solutions down and/or away from the sulphides to form wallrock replacement deposits. The direct replacement nonsulphide zones of the Salmo district overlay the sulphide bodies in which they replaced the sulphides and carbonates, forming large irregular replacement masses, encrustations and open-space fillings. They consist predominantly of hematite, goethite, hemimorphite [Zn4Si2O7(OH)2·H2O], minor hydrozincite [Zn5(CO3)2(OH)6], cerussite [PbCO3] and traces of willemite [Zn2SiO4]. The wallrock replacement zones consist mainly of hemimorphite with local occurrences of iron oxides, hopeite [Zn3(PO4)2·4H2O] and tarbuttite [Zn2(PO4)(OH)]. No remnants of sulphides were observed in the replacement zones. The Salmo nonsulphide deposits were formed by prolonged weathering of Mississippi Valley-type (MVT) mineralization that underwent dissolution and oxidation of the pyrite, sphalerite and galena protore. The weathering also leached out highly mobile Zn, less mobile Pb and left behind the iron oxides, precipitating Zn and Pb silicates within the protore or at a distance from the protore. © 2015 Her Majesty the Queen in Right of Canada
Walsh W.,British Columbia Ministry of Energy and Mines |
Tu A.,BC Hydro
Transactions - Geothermal Resources Council | Year: 2014
Although most commonly associated with young volcanic terranes and active hot springs, sedimentary basins hold tremendous geothermal potential. Several factors make many sedimentary basins ideal locations to explore for geothermal energy: low thermal conductivity of sedimentary rocks results in higher than average geothermal gradients; porous and permeable regional aquifers are conducive to the production of geothermal fluids; and existing oil and gas exploration results are available to characterize and evaluate potential fields. The Clarke Lake gas field south of the city of Fort Nelson in northeastern British Columbia, Canada, is hosted by Middle Devonian carbonate rocks that have long been known to exhibit remarkable permeability and temperatures in excess of 110°C. This permeable dolomite aquifer is controlled by the diagenetic alteration of the original depositional trend of reef facies in the Keg River through Slave Point formations, and is over 200m at its thickest. Estimates of the recoverable thermal energy within the aquifer at Clarke Lake using a Volume Method Monte-Carlo model indicate the resource is significant in size (mean 10.1 X 1014 kJ; standard deviation 3.2 X 1014 kJ). Using binary geothermal technology, this thermal energy can be used to generate electricity. It is estimated that purpose-built wells would be able to access enough thermal energy to generate more than 1MW of electricity each. Geothermal plants could be supplied by multiple directional wells to provide greater capacity than is capable from a single well. The resource assessment indicates that the Clarke Lake field could be used to generate between 12 to 74 MW (mean 34MW; standard deviation 10.8MW) of electricity. Copyright © (2014) by the Geothermal Resources Council.
News Article | February 15, 2017
VANCOUVER, BC--(Marketwired - February 14, 2017) - Rokmaster Resources Corp. (TSX VENTURE: RKR) ("Rokmaster" or the "Company") is pleased to announce that it has received a Mines Act Permit (the "Permit") from the British Columbia Ministry of Energy and Mines authorizing exploration activities including surface diamond drilling on the Company's 100% owned Duncan Lake Zinc-Lead Property (the "Property"). The Permit expires in September 2019. Prior to drilling the Property, the Company commenced a preliminary program consisting of further data collection and compilation. This work includes recovery, re-organization and re-logging of selected historical drill core, analysis of selected core intervals for silver and gold and structural study to target initial drill holes. Drilling is expected to commence in early summer 2017. For additional information on the Company and its properties, please visit the Company's website www.rokmaster.com or call (604) 632-9602. On behalf of the Board of Directors of ROKMASTER RESOURCES CORP. Neither the TSXV nor its Regulation Services Provider (as that term is defined in the policies of the TSXV) nor any other regulatory authority accepts responsibility for the adequacy or accuracy of this release. This news release may contain forward-looking information within the meaning of applicable securities laws ("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. These forward-looking statements are subject to a variety of risks and uncertainties which could cause actual events or results to differ materially from those reflected in the forward-looking statements, including, without limitation: risks related to fluctuations in metal prices; uncertainties related to raising sufficient financing to fund the planned work in a timely manner and on acceptable terms; changes in planned work resulting from weather, logistical, technical or other factors; the possibility that results of work will not fulfill expectations and realize the perceived potential of the Company's properties; risk of accidents, equipment breakdowns and labour disputes or other unanticipated difficulties or interruptions; the possibility of cost overruns or unanticipated expenses in the work program; the risk of environmental contamination or damage resulting from Rokmaster's operations and other risks and uncertainties. Any forward-looking statement speaks only as of the date it is made and, except as may be required by applicable securities laws, the Company disclaims any intent or obligation to update any forward-looking statement, whether as a result of new information, future events or results or otherwise.