Millrock Receives First Mineralogical Positive Results From Alaska’s Nikolai (Ni-Cu-Co-PGE) Project, The Canadian Business Journal

VANCOUVER, British Columbia, Sept. 29, 2022 (GLOBE NEWSWIRE) — Millrock Resources Inc. (TSX-V: MRO) (“Millrock”) announced that it has completed a mineralogical evaluation of a historic drill core from Upper Eureka. We are pleased to report the positive initial results obtained. Nickel (Ni) – Copper (Cu) – Cobalt (Co) – Platinum Group Element (PGE) Zone (“UEZ”) and Core Eureka Zone (“CEZ”) of the wholly owned Nikolai Project to host prospects. The Nikolai Project is located within Alaska’s Delta Mining District, approximately 130 kilometers by road south of Delta Junction and approximately 280 kilometers southeast of Fairbanks. Eurekazone is a disseminated Ni-Cu-Co-PGE initially discovered by his INCO subsidiary and further expanded by Pure Nickel Inc., as reported in press releases from 2007 to 2014. Consists of mineralization.

Mineralogical assessment highlights include:

• 94% of the nickel in the CEZ is found in nickel sulfide (pentlandite) and nickel alloy minerals.
• 72% of the copper in the CEZ is found in copper sulfides (chalcopyrite, bornite and chalcosite).
• 80% of the nickel in the UEZ is found in nickel sulfide (pentlandite) and nickel alloy minerals.
• 75% of the copper in the UEZ is found in copper sulfides (chalcopyrite, bornite and chalcosite).

Millrock President and CEO Gregory Beischer commented: “This is an encouraging result! For large tonnage low-grade deposits, it is important to fully understand the potential recoveries of valuable metals. It shows a mineral form that allows for strong recovery with common processing methods.”

Methodology – metal content
Two composite samples from Hall FL-003 were made for UEZ and CEZ. Each composite consisted of six quarter-core sample intervals spread across the mineralized zone. In 1997 he used historical analysis of studies conducted by INCO to calculate the expected metal content of each composite sample (Table 1). Historical recording and sampling of INCO drill cores was made under the direct supervision of Gregory Beischer, who is responsible for this disclosure. Historical assays were performed at Chemex, Inc., Reno, NV. The chemical analysis of the composites for this study was completed prior to the mineralogical studies and verified the results of previous analyzes completed by INCO (Table 1). The concentrations measured by INCO and Millrock were found to be similar.

table 1. Sample intervals, historical grades, calculated composite grades, and actual analytical results from mineralogical studies of selected samples from hole FL-003 to create composites for CEZ and UEZ.

Composite 1 – Core Eureka Zone (CEZ)
sample	Hall ID	from feet	to feet	Ni ppm	Cu ppm	Coppm	palladium ppb	platinum ppb	Au ppb
FX536263	FL-003	758	763	1900	1800	290	164	105	Ten
FX536264	FL-003	763	768	1900	1870	260	162	80	14
FX536270	FL-003	793	798	2500	1270	220	164	80	Ten
FX536274	FL-003	813	818	3000	1560	240	206	80	52
FX536277	FL-003	828	833	2300	820	180	118	50	16
FX536281	FL-003	848	853	3200	1460	210	132	50	twenty four
CEZ calculation grade (historical assay)				0.25	0.14	0.02	0.157	0.072	0.023
New assay results from complex samples				0.25	0.16	0.02	0.173	0.043	0.068
Composite 2 – Upper Eureka Zone (UEZ)
sample	Hall ID	from feet	to feet	Ni ppm	Cu ppm	Coppm	palladium ppb	platinum ppb	Au ppb
FX536768	FL-003	257	262	1690	385	141	82	42.5	2
FX536772	FL-003	283	288	1500	340	120	71	33	2
FX536084	FL-003	347	350	2397	938	146	128	55	14
FX536086	FL-003	400	405	2636	918	154	132	65	16
FX536798	FL-003	415	420	1975	630	133	83	36	12
FX536253	FL-003	708	713	the year of 2000	940	220	146	70	twenty four
UEZ Calculated Grade (Historical Assay)				0.20	0.07	0.02	0.104	0.049	0.009
New assay results from complex samples				0.23	0.06	0.02	0.135	0.031	0.095

Methodology Mineralogical studies
Mineral processing work was completed by Bureau Veritas Metallurgical Laboratories in Richmond, British Columbia, Canada. Each composite was ground to approximately 125 µm according to standard grind calibration procedures. The ground composite was sized using a wet screen and cyclone sizer and sized into four fractions for chemical and QEMSCAN analyses. QEMSCAN particle mineral analysis was performed on each size fraction of the sized composites to determine nickel and copper behavior and fragmentation properties.

Early mineralogical findings
Nickel sulfide and nickel alloys accounted for approximately 94% of the total nickel in the CEZ composite samples (only 5.1% of the total nickel in the silicate). Pentrandite was the major nickel-bearing sulfide, accounting for approximately 92% of the total nickel in the CEZ composites. The pentlandite content was measured at 0.68 wt%. The remaining potentially recoverable nickel was in nickel alloys and nickel metal, accounting for about 2% of total nickel. The CEZ is high in sulfur (1.32%) and rich in pyrrhotite (1.78% by weight). Linkages between pentlandite and pyrotite are rarely observed, favoring the separation of pentlandite from pyrotite.

Nickel sulfide and nickel alloys accounted for approximately 80% of total nickel in the UEZ composite samples (18.9% of total nickel in silicate). Pentrandite was the major nickel-bearing sulfide, accounting for approximately 64% of the total nickel in the CEZ composites. The pentlandite content was measured at 0.44 wt%. The remaining potentially recoverable nickel was in the form of nickel alloys and nickel metal, accounting for about 16% of total nickel. UEZ has lower sulfur (0.49%). This is probably due to the depletion of pyrrhotite. These results are summarized in Table 2 below.

Table 2. Summary of Ni-Fe-S analysis of Eurekazone composites

nickel deportment	CEZ		UEZ
Ni-Fe sulfide	92.2	%	64.1	%
Ni-Fe alloy	2.1	%	16.7	%
sulfide hydroxide	0.6	%	0.3	%
silicate (olivine)	5.1	%	18.9	%
Total potentially recoverable nickel	94.3	%	80.8	%
% Ni by chemical analysis	0.25	%	0.23	%
% S by chemical analysis	1.32	%	0.49	%
% Pentlandite by weight	0.68	%	0.44	%
Weight % Pyrhotite	1.78	%	0.55	%

Copper sulfide accounted for approximately 71% to 75% of the total copper within the CEZ and UEZ composites. Chalcopyrite is the major copper sulfide, accounting for approximately 67% to 71% of the copper in the composite sample. Bornite, chalcosite, cuprite, malachite and azurite were also included in the composite sample. The remaining copper (about 24% to 28%) was contained in valerite (Cu-Fe-Mg sulfate). The copper sulfide content was 0.31 wt% for CEZ and 0.14 wt% for UEZ. These results are summarized in Table 3 below.

Table 3. Summary of reports on Cu-Fe-S in Eurekazone composites

copper grade	CEZ		UEZ
chalcopyrite	66.8	%	70.7	%
Bornite	1.0	%	1.7	%
chalcosite/corbelite	3.5	%	2.9	%
cuprite, malachite, azurite	1.1	%	0.2	%
Valerite	27.5	%	24.5	%
total potential recoverable copper	72.4	%	75.5	%
% Cu by chemical analysis	0.16	%	0.07	%
Weight % Cu Sulfide	0.31	%	0.14	%

An additional composite sample from the Lower Eureka Zone (“LEZ”) was submitted to Bureau Veritas and an identical mineral analysis was completed. The results of the LEZ analysis were reported in a September 26, 2022 Millrock press release.

Quality Control – Quality Assurance
Millrock adheres to strict Quality Assurance – Quality Control (“QA/QC”) standards. Core samples are always kept in a secure location. In this case, the samples were analyzed at the Bureau’s Veritas Laboratories in Vancouver, Canada. The preparation and analytical methods are described in further detail here. Analytical methods used include MA270 – ICP-ES with 4-acid digestion ICP-ES/MS Finish and FA330 – Fire assay fusion Au, Pt, Pd. Qualified persons are of the opinion that the results reported in this press release are reliable.

qualified person
The technical information in this document has been reviewed and approved by Millrock’s President, CEO and Director, Gregory A. Beischer. Mr. Beischer is a qualified person as defined by NI 43-101.

About Milrock Resources
Millrock Resources Inc. is the mining industry’s leading project generator. By identifying, packaging and operating large joint venture projects, Millrock provides shareholders with the benefits of mineral discovery without the usual financial risks of most exploration companies. The company is recognized as Alaska’s premier generating rover, holds royalty interests in British Columbia, Canada and Sonora, Mexico, and is a major shareholder in junior rover ArcWest Exploration Inc. Major shareholder of Resolution Minerals Limited. Drilling funding for Millrock’s exploration projects is primarily provided by his partners in his joint venture. Millrock’s business partners include some of the major companies in the mining industry. EMX Royalty, Centerra Gold, First Quantum, Teck, Kinross, Vale, Inmet, Altius, and Junior Explorers Resolution, Riverside, PolarX, Felix Gold, and Tokuban.

On behalf of the Board of Directors
“Gregory Basher”
President and CEO Gregory Basher

Please contact us for more information.
Melanie Henderson, Investor Relations
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Certain statements in this news release contain forward-looking information. This includes, but is not limited to, conducting further deport investigations. These statements address future events and circumstances and involve known and unknown risks, uncertainties and actual results, performance or achievements, either expressed or implied by future results, performance or achievements. accompanied by other factors that may differ materially from those stated. statement. Such factors include, but are not limited to, completion of planned expenditures, ability to complete exploration programs on time, and success of exploration programs.

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