Hannan Radiometric Dating Confirms Miocene Porphyry Belt at the Previsto Copper-GOLD Project, PERU
1305 – 1090 West Georgia Street, Vancouver, BC, V6E 3V7
Phone: +1 604 685 9316 / Fax: +1 604 683 1585
NEWS RELEASE NOVEMBER 04, 2021
HANNAN RADIOMETRIC DATING CONFIRMS MIOCENE PORPHYRY BELT AT THE
PREVISTO COPPER-GOLD PROJECT, PERU
Vancouver, Canada – Hannan Metals Limited (“Hannan” or the “Company”) (TSXV: HAN) (OTCPK:
HANNF) is pleased to report that U-Pb zircon dating on four porphyry i ntrusive centres within an area of 140
by 50 kilometres has defined a previously unrecognized Miocene metallogenic belt associated with significant
BLEG, float and outcrop Cu-Au geochemical anomalism at its 100%-owned Previsto project in Peru.
Highlights:
Radiometric dating work by Hannan has identified a previously u nrecognized Miocene copper-gold
metallogenic belt in the sub-Andean zone of central Peru, with eight porphyry samples within an area
of 140 by 50 kilometres yielding ages ranging from 21.5 Ma to 12.2 million years (“Ma”; early to mid-
Miocene).
This new district overlaps in age with the Miocene magmatic arc in the Western Cordillera of Peru,
where some of Peru’s largest porphyry copper+/-gold and epither mal gold deposits were formed at
the same time. This work ‘re-draws’ the map of where such deposits can be found and verifies Hannan’s
assumptions that Previsto represents a new search space in a co untry thought to be mature in its
exploration potential. (Figure 2).
Hannan has continued to stake additional ground and increased i ts land position by 7% for a total of
113,200 ha (1,132 sq km). Fourteen mining concessions for 13,500 ha (135 sq km) are now granted
(Figure 3).
The Company is currently working with local stakeholders to plan next steps.
Michael Hudson, CEO, states “Through boots on the ground exploration and modern scientific
methods, Hannan has defined a gr eenfield porphyry copper exploration district in non-traditional
areas of the Peruvian sub-Andean region. All dates are interpre ted to represent the timing of
emplacement of the porphyry intr usions and associated mineraliz ation. The presence of Miocene
magmatic rocks in the sub-Andean zone of Previsto is considered regionally unusual and a
potentially significant finding for future discovery. The case for “young” porphyry deposits located
i n a b a c k - a r c s e t t i n g , t h a t i s t o s a y , f a r i n b o a r d o f t h e i r v o lcanic arc contemporaries is best
exemplified by the case of Bajo de la Alumbrera (pre-mining measured resource 695 Mt @ 0.51%
Cu, 0.66 g/t Au) in Argentina, which lies some 150 kilometres east of contempo raneous porphyry
d e p o s i t s i n t h e C h i l e a n A n d e s . W e l o o k f o r w a r d t o w o r k i n g c l o sely with local stakeholders to
advance exploration in the area”.
The Previsto project, located 300 kilometres south of Hannan’s 100% -controlled San Martin sediment-hosted
copper-silver project, defines a previously unknown mineralized belt within a 140 by 50 kilometre area (Figures
1 and 2). The area comprises sh allow marine to continental sed imentary rocks of Upper Permian to Miocene
age that have experienced considerable WNW-ESE-directed shorten ing, though folding an d thrusting, during
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multiple events of Andean deformation. Theis dating suggests that moderately oxidised, medium- to high-K calc-
alkaline intrusions, rock types c ommonly associated with porphy ry copper-gold deposits globally, intruded this
deformed sedimentary package during the early to mid-Miocene, s ome 140 kilometres east of the coeval
magmatic arc in the Peruvian Cordillera.
At Previsto, regional exploration has identified seven porphyry /skarn targets with associated coincident Cu-Au-
Mo-Ag and lesser Pb-Zn-Sn-W anomalism from multiple datasets in cluding stream sediment,, outcrop and
boulder geochemical sampling, geological mapping and regional a irborne magnetics. The nature of the targets
is at an early stage. The entire area is under thin cover, and it is estimated that <1% of the bedrock outcrops.
The most advanced of these prospects is located at Previsto Nor te where a large number of copper-bearing
boulders comprising a variety of porphyry intrusions occur with strong hydrothermal alteration and quartz
veining. Assays up to 25.6% copper and 28 g/t silver (previousl y report) have been returned. Gold anomalous
boulders are also present, with 0.9 g/t gold and 0.12% copper a ssayed from a strongly leached hydrothermal
breccia with porphyritic clasts.
Hannan is working closely with local stakeholders in the area a nd regional government to plan the next steps
on the project now that 14 mining concessions for 13,500 ha (13 5 sq km) have recently been granted (Figure
3).
Technical Background
Uranium–lead (“U–Pb”) dating is a well-established and accurate radiometric dating method used to determine the age of
rock formation. The method is usually applied to zircon as this mineral incorporates uranium and thorium atoms into
its crystal structure, elements that then produce lead by radiogenic decay at a rate that is well established. As zircon strongly
rejects lead when forming during magmatic processes, measurement of the ratio of lead to uranium in a rock sample can
be used to determine its accurately and precisely determine its age.
Hannan contracted Zirchron LLC, Tucson AZ, USA to perform the dating work at Previsto. Zircons were separated from the
rock matrix using an Electro Pulse Disaggregator, sieving and Wilfley water table, Frantz paramagnetic separator and heavy
liquid MEI separation, before being mounted in epoxy resin disc s and polished. Zircon U-Pb ages were measured at the
Radiogenic Isotope and Geochronology Lab (RIGL) at WSU using an Analyte G2 193 excimer laser ablation system coupled
with a Thermo-Finnigan Element 2 single-collector, inductively coupled, plasma mass spectrometer.
Of the ten samples dated, eight yielded dates ranging from 21.5 Ma to 12.2 Ma (early to mid-Miocene), while two samples
recorded dates of older intrusions, being 119.5Ma +/1 1.4Ma (Early Cretaceous) and 298.3Ma +/3.3Ma (Early Permian).
All mineralized samples from Pr evisto were collected by Hannan geologists. Samples were transported to ALS in Lima via
third party services using traceable parcels. At the laborato ry, rock samples were prepared and analyzed by standard
methods. The sample preparation involved crushing 70% to less t han 2mm, riffle split off 250g, pulverize split to better
than 85% passing 75 microns. The crushers and pulverizes were cleaned with barren material after every sample. Samples
were analyzed by method ME-MS61, a four acid digest preformed o n 0.25g of the sample to quantitatively dissolve most
geological materials. Analysis is via ICP-MS.m Channel samples are considered representative of the in-situ mineralization
samples and sample widths quoted approximate the true width of mineralization, while grab samples are selective by nature
and are unlikely to represent average grades on the property.
About Hannan Metals Limited (TSXV:HAN) (OTCPK: HANNF)
Hannan Metals Limited is a natural resources and exploration co mpany developing sustainable resources of metal needed
to meet the transition to a low carbon economy. Over the last d ecade, the team behind Hannan has forged a long and
successful record of discovering, financing, and advancing mine ral projects in Europe and Peru. Hannan is a top ten in-
country explorer by area in Peru.
Mr. Michael Hudson FAusIMM, Hannan’s Chairman and CEO, a Qualified Person as defined in National Instrument 43-101,
has reviewed and approved the technical disclosure contained in this news release.
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On behalf of the Board,
"Michael Hudson"
Michael Hudson, Chairman & CEO
Further Information
www.hannanmetals.com
1305 – 1090 West Georgia St., Vancouver, BC, V6E 3V7
Mariana Bermudez, Corporate Secretary,
+1 (604) 685 9316, [email protected]
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