Millrock Commences Drilling Program at LA Navidad GOLD Project, Sonora State, Mexico
MILLROCK RESOURCES INC. | Suite 2300 – 1177 West Hastings St. | Vancouver, BC V6E 2K3
Tel: 604 638 3164 | Fax: 907 677 3599 | www.millrockresources.com
NR: 17-22
MILLROCK COMMENCES DRILLING PROGRAM AT LA
NAVIDAD GOLD PROJECT, SONORA STATE, MEXICO
VANCOUVER, BRITISH COLUMBIA, November 9, 2017 - Millrock Resources Inc. (TSX-V:
MRO, OTCQX: MLRKF) ("Millrock") is pleased to report that the first phase of surface
exploration on the La Navidad gold project is near completion, and a drilling program has
begun. The project, located in Sonora State, Mexico, 100 km north of the City of Hermosillo,
targets orogenic gold deposits. Highlights of a rock sampling program include:
• 24 meters grading 0.9 grams per tonne gold;
• 12 meters grading 1.1 grams per tonne gold;
• 14 meters grading 0.8 grams per tonne gold.
A drilling program consisting of approximately 2,000 meters in nine drill holes is in progress and
is planned for completion in December.
Since forming an option to purchase agreement with the underlying mineral right owner in June
2017, and a simultaneous option to joint venture agreement with Centerra Gold Inc.
(“Centerra”), Centerra and Millrock have collaborated to execute a comprehensive exploration
program. Centerra is funding the exploration work to earn an interest in the project.
The La Navidad project targets bulk minable, run-of-mine, oxidized deposits that could be
processed by heap leaching. The prospects at La Navidad bear the characteristics of an
orogenic gold system similar in nature to other gold deposits being mined in the district,
including:
• Lluvia de Oro (Metallōrum Holding);
• Santa Gertrudis (Agnico Eagle Mines Limited); and the
• San Francisco Mine (Alio Gold Inc.).
Alio Gold’s San Francisco Mine is a prime example of the type of deposit sought by Millrock and
Centerra. On their website, Alio Gold reports:
• Measured & Indicated Resources (inclusive of Reserves) –74.8 million tonnes grading
0.541 grams per tonne gold, containing 1.3 million ounces of gold
• Proven & Probable Reserves – 54.8 million tonnes grading 0.527 grams per tonne gold
containing 0.9 million ounces of gold.
MILLROCK RESOURCES INC. | Suite 2300 – 1177 West Hastings St. | Vancouver, BC V6E 2K3
Tel: 604 638 3164 | Fax: 907 677 3599 | www.millrockresources.com
Millrock Begins Drilling at La Navidad
Page 2
Exploration Program and Summary Results:
Soil sampling across the entire property was successfully completed. In total, 1,082 samples
were collected and 886 samples have been analyzed. Results are still pending for 196 samples.
Of the samples that have results, multiple zones of anomalous gold in soil were identified, with
248 of the 886 analyzed samples containing in excess of 50 parts per billion gold.
Three main prospect areas have been identified – Anchor, Horseshoe, and Cobre – and these
are described in more detail below.
Magnetic geophysical surveys (82 kilometers) and dipole-dipole induced polarization (“IP”)
geophysical surveys (20 kilometers) were carried out to image bedrock features beneath
surface. Magnetics helped map the lithological units. IP identified zones of strong chargeability
and supports an interpretation of gently-dipping rock units. Known gold mineralization is hosted
in low to moderately resistive rock units, enclosed above and below by moderately resistive
rocks.
Geological mapping was carried out across the entire property. The geology is complex and
contains multiple deformed rock types. Biotite gneiss and metasediments are intruded by
granodiorite, diorite and granite. Hydrothermal alteration is widespread in these rocks and
corresponds to northwest trending and northeast trending structural zones. Mineralization
appears to be associated with iron carbonate minerals (siderite predominantly), fine
disseminated pyrite, with sericitization and silicification of the metasedimentary and gneissic
host rocks.
The numerous roads and trails present on the property were upgraded and refurbished with a
bulldozer, creating continuous rock exposures in altered and mineralized zones. Detailed
mapping was done along rock exposures in road cuts. Continuous chip-channel rock sampling
was also done along the road cuts and strongly anomalous gold was detected over significant
widths, as outlined under the prospect descriptions below. A total of 575 rock samples were
collected. Of these, 83 samples contained gold grades above 0.5 parts per million (ppm) and 49
of the samples contained more than 1.0 ppm.
Anchor Prospect
A strong gold anomaly (with silver, lead, zinc, arsenic, antimony, tellurium and bismuth – a suite
typical of orogenic deposits) was detected at the Anchor prospect. The anomaly is strongest in
the vicinity of prior drilling but extends northward for a distance of 800 meters. Prior workers
reported reverse circulation drill holes with significant gold grades and intervals, as indicated in
MILLROCK RESOURCES INC. | Suite 2300 – 1177 West Hastings St. | Vancouver, BC V6E 2K3
Tel: 604 638 3164 | Fax: 907 677 3599 | www.millrockresources.com
Millrock Begins Drilling at La Navidad
Page 3
an earlier press release. These drill holes were drilled in the southernmost portion of the 800
meter long gold-in-soil anomaly that has been recently delineated.
Gold mineralization is predominately controlled by low angle structures containing siderite-
quartz-calcite veinlets, striking in a northwesterly direction. Alteration is controlled by structures
and lithology. In the areas containing biotite gneiss, the predominant alteration is sericite, iron
carbonate and weak chloritization. In quartz feldspar gneiss, the predominant alteration is weak
to moderate sericitization. These rocks also contain iron carbonates (predominantly siderite)
and sulfide box works. The altered zones are oxidized.
While some sample results are pending, some of the better chip-channel intervals include:
The intervals reported represent apparent width. True width cannot be confidently determined at present.
Horseshoe Prospect
A strong gold anomaly (with silver, lead, bismuth arsenic, and zinc) was detected at the
Horseshoe prospect. This is in an area which appears not to have been previously identified as
prospective. The anomaly measures approximately 500 meters long by 450 meters wide. The
Horseshoe area is underlain by medium grained biotite gneiss and fine grained quartz feldspar
gneiss and metasediments. To the north these rocks are in contact with hornblende gabbro.
Gold mineralization is associated with quartz - sericite - pyrite alteration and occurs in quartz –
calcite - siderite veins and veinlets.
Sample numbers Length
(meters)
Gold
(ppm) Comments
Anchor South Road
122101-122105 15 0.7 includes 3 meters of 1.2 ppm Au
124939-124942 12 1.1 includes 3 meters of 3.1 ppm Au
124946-124949 12 1 includes 6 meters of 1.3 ppm Au
Anchor N-S Road
120825-120829 15 0.3 includes 3 meters of 0.6 ppm Au
124503-124504, 319851-318856 25 0.3 includes 3 meters of 0.6 ppm Au
Anchor Middle Road
1208578-120864 24 0.9 includes 3 meters of 2.1 ppm Au
and 6 meters of 1.7 ppm Au
MILLROCK RESOURCES INC. | Suite 2300 – 1177 West Hastings St. | Vancouver, BC V6E 2K3
Tel: 604 638 3164 | Fax: 907 677 3599 | www.millrockresources.com
Millrock Begins Drilling at La Navidad
Page 4
While some sample results are pending, some of the better chip-channel intervals include:
The intervals reported represent apparent width. True width cannot be confidently determined at present.
Cobre Prospect
A large, strong, gold and copper anomaly was also detected at the Cobre prospect. The
anomaly measures approximately 2,000 meters by 1,000 meters. Rock types include gneiss
with limestone and metasediment lenses. An east-west trending quartz - sericite alteration zone
contains copper showings. Chip channel samples have been collected in select areas and
results are pending. Systematic trenching and road cut sampling is in progress.
Quality Control – Quality Assurance:
The technical information within this document has been reviewed and approved by Gregory A.
Beischer, President, CEO and a director of Millrock Resources. Mr. Beischer is a Qualified
Person as defined in NI 43-101.
Millrock adheres to stringent Quality Control – Quality Assurance standards. Rock samples
were delivered from the project site by Millrock personnel to Bureau Veritas lab in Hermosillo,
Mexico for analysis. Samples were kept in a secure location prior to delivery to the laboratory.
Analysis methods used include FA430 (30 gr/Fire Assay/AAS) and AQ-200 (Aqua Regia –
ICP/MS). For every 20 rock samples a blank sample known to contain no gold and a standard
sample of known gold concentration were also analyzed. Three different standards were utilized
including MEG-Au 11.15 (3.4 ppm Au), MEG-Au 12.11 (1.5 ppm Au) MEG-Au 13.01 (0.31 ppm
Au). All results from blanks, standards and duplicates were reviewed and found to be accurate
within acceptable tolerances for results obtained to date.
Sample numbers Length
(meters)
Gold
(ppm) Comments
North Horseshoe - Crossover Area
120560-120564 15 0.6 includes 3 meters of 1.2 ppm Au
Horseshoe Quartz Breccia Zone
120651-120656 14 0.8 includes 3 meters of 1.9 ppm Au
MILLROCK RESOURCES INC. | Suite 2300 – 1177 West Hastings St. | Vancouver, BC V6E 2K3
Tel: 604 638 3164 | Fax: 907 677 3599 | www.millrockresources.com
Millrock Begins Drilling at La Navidad
Page 5
About Millrock Resources Inc.
Millrock Resources Inc. is a premier project generator to the mining industry. Millrock identifies,
packages and operates large-scale projects for joint venture, thereby exposing its shareholders
to the benefits of mineral discovery without the usual financial risk taken on by most exploration
companies. The company is active in Alaska, British Columbia, the southwest USA and Sonora
State, Mexico. Funding for drilling at Millrock’s exploration projects is primarily provided by its
joint venture partners. Business partners of Millrock have included some of the leading names in
the mining industry: Kinross, Centerra Gold, First Quantum, Teck, Vale, Inmet, Altius, and
Riverside. Millrock is a significant shareholder of junior explorers PolarX Limited and Sojourn
Exploration Inc.
ON BEHALF OF THE BOARD
“Gregory Beischer”
Gregory Beischer, President & CEO
FOR FURTHER INFORMATION, PLEASE CONTACT:
Melanee Henderson, Investor Relations
(604) 638-3164
(877) 217-8978 (toll-free)
Some statements in this news release contain forward-looking information. These statements
address future events and conditions and, as such, involve known and unknown risks,
uncertainties and other factors which may cause the actual results, performance or
achievements to be materially different from any future results, performance or achievements
expressed or implied by the statements. Such factors include without limitation the completion of
planned expenditures, the ability to complete exploration programs on schedule and the
success of exploration programs.
"NEITHER 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."