March 31, 2016
TSX Venture Exchange
Trading Symbol: BHK.V
David Underwood, Vice President Exploration of BHK Mining Corp. (“BHK” or the “Company”) is pleased to announce that BHK has completed a trench sampling exercise to test the manganese content and mineralogy of the North East Target of BHK’s Ndjole Licence in Gabon. The XRF results from Trench NDTR001 returned 11 metres at 36.1% Mn including 4 metres at 50.24 % Mn (between samples L09306 to L09309). See Table 1 below. The high grade portion has a low iron content of less than 7% Fe.
Trench Sampling and Assay
A single trench was excavated at the North East Target to evaluate the supergene enriched portion of the primary manganese mineralization intersected in drill holes NDDD0028, 35 and 40. The trench was approximately 2 metres wide and 11 metres in length although the mineralization was open both to the southeast and the northwest. The trench was excavated perpendicular to strike into the weathered rock which is visible at a depth varying between 1.5 and 3 metres.
A continuous channel sample was collected using a geological hammer along the side wall and floor depending on exposure. The rock chips from the channel were collected at 1m intervals in a plastic bag and submitted to ALS Chemex of Johannesburg, South Africa for XRF analysis. The results from this analysis are presented in Table 1.
Table 1. XRF Assay Results for Trench Sample NDTR001
|SAMPLE||Mn %||Fe %||SiO2 %||Al2O3||K2O %||SO3 %||P2O5 %||Total %||LOI %|
Mineralogical Test Work
Sub-samples from two metallurgical bulk samples (results pending) were submitted to Microanalysis of Perth, Australia for mineralogical testing by XRD. Two additional samples were sent to confirm the mineralogy of the manganese carbonate and oxidized manganese carbonate zones – see Table 2.
Table 2. Mineralogical Samples
|BHK_Ndjole07||NDMin01||NDDD0040: 20 -48m||Primary Mn Head Feed - Bulk sample sent to Nagrom|
|BHK_Ndjole07||NDMin02||NDDD0040: 20 -48m||Primary Mn +1mm 3.8SG Bulk sample sent to Nagrom|
|BHK_Ndjole15||NDMin03||NDTR001||Supergene Mn Ore Trench NDTR01|
|BHK_Ndjole15||NDMin04||NDDD0028: 30m||Oxidized primary ore from 30m deep|
|BHK_Ndjole15||NDMin05||NDDD0046: 42m||Primary Mn zone - check sample|
Samples NDMin01, 02 and 05: These samples are from low grade primary manganese mineralization which was intersected in drill holes NDDD0040 and NDDD0028. The primary manganese mineral present is manganese carbonate – rhodocrosite (MnCO3). The gangue mineral species in this sample are quartz, siderite (Fe(CO3)) and muscovite. Manganese carbonate is a highly sought after direct feed ore if it can be mined at a grade of 30% Mn.
Sample NDMin04: This is from the oxidized zone of the primary manganese mineralization. The primary carbonate is oxidized and the manganese forms various oxide species. In this sample the dominant manganese oxides are cryptomelane (K(Mn8016)) and pyrolusite (MnO2). The gangue minerals are dominantly illite, quartz and muscovite.
Sample NDMin03: This is from the high grade supergene manganese in Trench NDTR01. The main manganese bearing mineral is nsutite (Mn(O,OH)2), with lesser cryptomelane (K(Mn8016)) and other manganese oxides and hydroxides. Gangue minerals present are gibbsite, goethite, muscovite and quartz.
David Underwood commented as follows: “The style of mineralization at Ndjole appears to be similar to the Moanda ore body in Franceville, Gabon. At Moanda, the parent rock is also an organic-rich black shale, which contains manganese carbonate as well as quartz, pyrite and illite. The supergene portion of this world class ore body is mined where it is exposed under the manganese poor (iron-rich) laterite”.
All technical information in this press release has been reviewed, approved and prepared under the supervision of David Underwood, Vice President Exploration who is the Company’s “Qualified Person” under the definitions set forth in the National Instrument 43-101 - Standards of Disclosure for Mineral Projects.
Methodology and Quality Control
Procedure for Trench Channel Sampling
Collection of Samples: Continuous channel samples were collected from the sidewall and footwall of Trench NDTR001. The channel was cut using a geological hammer and mallet at a constant thickness. The channel samples were bagged at 1m intervals. The weathering and outcrop of the supergene material varies along the length of the trench and there is dilution of the high grade material with soil and highly weathered material. The trench is orientated on azimuth 130 and the northwest start point and length is recorded using a GPS. All locations were recorded in UTM Zone 32S, WGS-84.
Preparation: Login of samples into the ALS Chemex tracking system, weighing, drying fine crushing of entire sample to 70% -2mm, split off 250g and pulverise split to better than 85% passing 75 microns.
Analysis: Analysis at ALS Chemex of Manganese ore samples by fused disc / XRF. Method Precision: ±5%. Samples were analysed for Al2O3, BaO, CaO, Cr2O, Fe2O3, K2O, MgO, MnO, Na2O, P2O5, SO3, SiO2, TiO2, V2O5 and LOI1000.
Quality Control: Manganese standards and blanks were inserted into the sample batch.
Procedure for Mineralogical Analysis by XRD
Mineralogical samples were submitted to Microanalysis in Perth, Australia. The procedure is as follows:
A representative sub –sample was removed and lightly ground such that 90% was passing 20 µm. Grinding to this size helps eliminate preferred orientation. Only crystalline material present in the sample will give peaks in the XRD scan. Amorphous (non-crystalline) material will add to the background. The search match software used is Eva 3.1. An up-to-date ICDD card set was used. The X-ray source is cobalt radiation. No standards are used in the quantification process.
The concentrations are calculated using the peak area integration method where the area of the 100% peak for each mineral phase is summed and the relative percentages of each phase calculated based on the relative contribution to the sum. This method allows for some attention to be paid to preferred orientation but is limited in considering substitution and lattice strain.
The ICDD match probability is reported as an indication as to how well the peak positions and relative intensities for the sample matched those in the published literature (www.icdd.org) for that particular compound.
BHK is a TSXV-listed junior exploration company with operations primarily in Gabon at the Ndjole Licence, where a new discovery of high-grade, near-surface manganese mineralization has recently been made. In addition to the manganese mineralization, BHK has implemented a drill program to follow up high-grade gold zones previously discovered at the Ndjole License by the former owner of the property. BHK’s operations at the Ndjole Licence open the door to further opportunities in this Central African country, which is among the top four manganese producers in the world (Manganese Investing News, June 8, 2015).
On behalf of the Board of Directors:
Chairman & Interim President and Chief Executive Officer
Information in this news release that is not current or historical factual information may constitute forward-looking information within the meaning of securities laws. Such forward looking information may include, among other things, statements regarding the potential exploration and development of the Ndjole Licence, the future plans and objectives for the Ndjole Licence, future opportunities in Gabon, the negotiation and completion of transactions and the future operating results and economic performance of the Company. Such forward-looking information and statements are based on a number of assumptions, including that the exploration and development activities at the Ndjole Licence will continue as planned and that the Company will be able to continue raising the necessary capital to finance its operations. Although we consider these assumptions to be reasonable at the time of preparation, they may prove to be incorrect. Readers are cautioned that the actual future exploration results, operating results and economic performance of the Company are subject to a number of risks and uncertainties. These risks include the inherent risks involved in the exploration and development of mineral properties, the uncertainties involved in interpreting drilling and exploration results and other geological data, the potential for unsuccessful exploration results, changes in project parameters as plans continue to be refined, fluctuating metal prices, the possibility of project cost overruns or unanticipated costs and expenses, uncertainties relating to the availability and costs of financing needed in the future, defects in title at the Ndjole Licence, the availability of personnel, materials and equipment on a timely basis, accidents or equipment breakdowns, uninsured risks, political instability, regulatory changes, delays in receiving government approvals, changes in general economic, market or business conditions and other risks as may be described herein and from time to time in the filings made by the Company with securities regulatory authorities in Canada. For more exhaustive information on these risks and uncertainties you should refer to our annual filings which are available on www.sedar.com.
Forward-looking information contained in this news release is based on our current estimates, expectations and projections, which we believe are reasonable as of the current date. You should not place undue importance on forward-looking information and should not rely upon this information as of any other date. While we may elect to, we are under no obligation and do not undertake to update this information at any particular time except as required by applicable securities law.
Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.