Mr. Robin Dow reports
NEVADA ORGANIC PHOSPHATE REPORTS CONTINUED EXCELLENT LOW HEAVY METAL ASSAYS FOR DRILL HOLE MM26-9 AT MURDOCK MOUNTAIN
Nevada Organic Phosphate Inc. has released heavy metal contaminant assays from the Upper Phosphatic zone in drill hole MM26-9 at Murdock Mountain continue to demonstrate results well below the maximum allowed limits for organic fertilizer certification.
In the attached table, please note the Murdock Mountain weighted average row and compare those values with the SUIP No. 25 and the California values. NOP's Upper Phosphate zone is significantly lower than the maximum heavy metal values allowed.
Note: The assays displayed above are the actual assays for each sample interval; the weighted averages are calculated over the whole intersection.
Robin Dow, chief executive officer, stated:
"This is another solid intersection from MM26-9
demonstrating that the Upper Phosphatic zone continues to deliver predictable, consistent P2O5
grades and thicknesses, while also meeting the clean, very low heavy metals content criteria for organic certification. We continue to meet our objectives, positioning NOP as a genuinely differentiated entrant in the fertilizer market."
Garry Smith, PGeo and director,
added:
"MM26-9 intersected a strong 10.73 per cent P2O5
over 4.48 metres (true thickness) of Upper Phosphate zone, reinforcing both the grade continuity we are working to define across the trend plus confirming continued clean, very low heavy metal contaminant assay results. We are excited to continue advancing Murdock Mountain in the coming months and to begin evaluating the Upper Phosphate zone on our additional permit application areas."
In the United States, organic certification
is governed by the USDA National Organic Program (USDA-NOP). The USDA-NOP does not publish its own numeric heavy-metal limits for mineral fertilizers like rock phosphate. Instead, certifiers rely on two things:
-
USDA-NOP 205.203(c) soil and plant amendments must not contaminate soil or crops with heavy metals.
-
State fertilizer laws can vary, but almost universally adopt AAPFCO's SUIP No. 25 heavy metal rule for determining whether a fertilizer is adulterated (AAPFCO, Association of American Plant Food Control Officials, created SUIP No. 25 to give states a consistent, science-based method for regulating heavy metals in fertilizers. It is not a law, but most states adopt it into their fertilizer programs).
USDA organic certification: for organic production, a rock phosphate fertilizer must:
-
Be mined, not chemically processed;
- Not contain synthetic additives;
- Not exceed heavy-metal levels that would contaminate soil or crops;
- Typically meet SUIP No. 25 limits (this is what certifiers check).
If a product meets these limits, it is generally acceptable for organic certification.
These are the maximum allowable concentrations before a phosphate fertilizer is considered adulterated under U.S. state fertilizer laws.
Lab assaying methods and QA/QC (quality assurance/quality control)
All sample preparation and analytical work was carried out by ALS Laboratories (ALS), an independent commercial laboratory accredited to ISO/IEC 17025:2017 for mineral analysis. Samples were delivered to the ALS Geochemistry in Elko, Nev., preparation facility and then forwarded to ALS Geochemistry in Vancouver for analysis. ALS operates under rigorous quality management systems and is regularly audited by recognized accreditation bodies, including the Standards Council of Canada (SCC) and the Canadian Association for Laboratory Accreditation (CALA).
Heavy metal assaying was by ME-MS61 trace element analysis: Samples were digested using a near-total four-acid procedure (HF; HNO; HClO; HCl) and analyzed by ICP-MS and ICP-AES. This technique delivers ultratrace detection of a broad suite of elements, including deleterious or contaminant metals such as arsenic, cadmium, mercury and lead, supporting environmental and processing assessments.
ALS maintains strict internal QA/QC protocols, including the insertion of certified reference materials, blanks and duplicates with each batch of samples. These measures ensure that analytical results meet internationally recognized standards of accuracy and reliability, consistent with the requirements of NI 43-101 reporting.
Company quality assurance/quality control (QA/QC)
The company implemented a rigorous QA/QC protocol consistent with NI 43-101 standards, including the insertion of blanks and certified reference materials into the sample stream.
Blanks: The company regularly inserted a blank comprised of generically sourced sand every 11 samples (or 9.3 per cent) to monitor potential contamination during sample preparation and analysis.
Certified reference materials (CRM): CRMs used in mineral exploration are used to assess analytical accuracy and are usually rock powders comprised of known concentrations of the metal(s) of interest. CRMs are usually obtained from commercial suppliers who provide the average of many analyses of the CRMs by multiple labs, which is referred to as the certified value, and a standard deviation of the analyses from which the certified value is determined. A typical criterion for accepting the analyses of CRMs in the mineral industry is that they should fall within a range determined by the certified (or target) value plus or minus three standard deviations (three STD). Analytical accuracy was verified against BAM 826-1, a certified reference material for phosphate slags issued by Germany's Federal Institute for Materials Research and Testing (BAM). The company inserted BAM 826-1 CRM standards every 22 samples (or 4.5 per cent), or about two per drill hole.
The company is satisfied that the QA/QC results demonstrate the reliability of the assay data and support the integrity of the phosphate grades reported herein.
Qualified person
The interpretation of the technical information in this news release has been reviewed and approved by Garry K. Smith, PGeo, a director of Nevada Organic and a qualified person as defined under National Instrument 43-101 -- Standards of Disclosure for Mineral Projects.
All assays and detailed core logging interpretation has been provided by the independent qualified person for this drill program, Kenneth N. Tullar, AIPG certified professional geologist (CPG 11142). Mr. Tullar has reviewed and approved the technical data in this news release.
About Nevada Organic Phosphate Inc.
Nevada Organic is a junior exploration company with an organic sedimentary raw rock phosphate bed, 6.6 kilometres long, in northeast Nevada. Additional applications extend the potential strike of rock phosphate to over 30 kilometres. This is believed to be the only known large-scale organic sedimentary phosphate project in North America. It is situated close to the main highway to Montello/Elko, Nev., and near the rail head to California or the East Coast.
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