Avrupa Minerals Updates Drilling Results at the Sesmarias VMS target, Alvalade JV, Portugal

Nov 28, 2023 | 2023, News

  • Company completes drilling at Sesmarias for 2023
    • Five holes drilled in the Sesmarias Central area targeting potentially high-grade hinge zone of Sesmarias synform-shaped VMS target;
    • One hole drilled to test potential west limb mineralization in the Sesmarias South area.
  • Company completes IP-Res geophysical survey over Sesmarias Central and North areas: results pending.
  • Partners Avrupa Minerals and Sandfire Minerals making plans for continued work at Sesmarias in 2024.

Avrupa Minerals Ltd. (AVU:TSXV) (OTC:AVPMF) (FRANKFURT:8AM) is pleased to update the investor community concerning progress at the Sesmarias copper-zinc massive sulfide prospect, located within the Alvalade Joint Venture Project in the Iberian Pyrite Belt of Portugal.  The program is a joint venture between Avrupa Minerals (“AVU” or “Company”) and Minas de Aguas Teñidas, S.A. (“Sandfire MATSA” or “MATSA”) through their local subsidiaries.  Avrupa continues to operate the project through the JV entity PorMining Lda., and MATSA continues to fund the exploration work.  Previously, through the JV, during 2020-2021, the Company drilled 17 diamond drill holes at Sesmarias, totaling 8,900 meters, on six different fences along a strike length of 400 meters in the Sesmarias North Zone.

The JV returned to drilling at Sesmarias in mid-April 2023, targeting the Central Zone, where Avrupa drilled the high-grade discovery hole, SES002, in 2014 (see February 27, 2014 News Release).  Follow-up drilling in the immediate discovery area at that time unsuccessfully targeted shallow extensions of the mineralization seen in SES002 at a depth of about 150 meters.  Armed with a significantly upgraded targeting model, constructed from 46 holes, totaling nearly 20,000 meters at Sesmarias since 2014, the JV geological team aimed deeper to 400 meters depth to attempt to locate further high-grade mineralization.

As reported in June (see June 12, 2023 News Release), the JV intersected strong copper-zinc massive sulfide mineralization in SES23-047.  Since completion of that hole, the JV drilled a further five holes, totaling 2,766 meters, in the Sesmarias Central and South Zones.  Total drilling at Sesmarias is now at 22,612 meters in 52 diamond drill holes, over a mineralized strike length of 1,700 meters.

The following general schematic section demonstrates how the target is perceived after 52 drillholes, geological and structural interpretation, surface geochemistry, and a variety of geophysical surveys since the original discovery in 2014.

Figure 1.  Schematic cross section of the Sesmarias massive sulfide target.  Note that the field of view is 500 meters SW to NE and encompasses 1,400 meters of strike length of mineralization from SE to NW.  Most of the drilling in the just-completed phase targeted the hinge zone of the Sesmarias synform in the Central area.  Due to small, but important, post-mineral structural complications and drilling difficulties, three of five holes intersected the hinge zone massive mineralization and/or stockwork, feeder-style mineralization, while one hole intersected the synform above targeted mineralization, and one hole missed below the hinge zone.  The sixth hole targeted massive sulfide mineralization on west limb of the synform in the Sesmarias South area.  The schematic section suggests that there is significant, un-explored target area in the hinge zone along strike and in both limbs of the synform, as well, along strike.


Encouraging results continued in the 6-hole phase of drilling in the Central and South areas on five separate fences over 600 meters of mineralized strike length.  The following diagram shows the extent of drilling in the Sesmarias North and Central Zones from SES019 northwest to SES21-036 as shown in the general schematic section.  The six recently-completed drill holes are highlighted in red.

Figure 2.  Drill hole locations and sections for Sesmarias North and Central (2014-2023).


The following tables summarize the most important results from the most recent drilling in the Sesmarias massive sulfide target area:


Drillhole   Interval From To Cu (%) Pb (%) Zn (%) Ag (g/t) Au (g/t)
SES23-047 26.95 393.80 420.75 2.18 2.58 5.60 88.2 0.33
w/i 43.40 392.80 436.20 1.51 2.15 4.78 64.1 0.26

Table 1.  Previously-reported high-grade results from SES23-047.  The hole intersected massive sulfides near the presumed bottom of the hinge zone on Section 650 South.


Figure 3.  Section 650 South showing SES002, SES003, SES23-041, and SES23-047.Note that SES23-041 crossed the Sesmarias synform above the hinge zone, and missed mineralization.  It appears that the high grade SES002/003 mineralization may have been displaced from the larger hinge zone target intersected by SES23-047.



Drillhole   Interval From To Cu (%) Pb (%) Zn (%) Ag (g/t) Au (g/t)
SES23-048 9.20 419.10 428.30 1.20 1.46 3.05 30.1 0.43
and 8.30 428.30 436.60 0.31 anom. 0.33 anom. 0.43
total 17.50 419.10 436.60 0.78 0.43
also 0.25 348.40 348.65 1.01 0.74 1.32 39.2 0.14

Table 2.  New results for SES23-048.  The hole intersected 9.2 meters of massive sulfide mineralization, followed by 8.3 meters of stockwork sulfide mineralization near the presumed top of the hinge zone, or possibly on the western, upright limb of the Sesmarias synform on Section 800 South.


Figure 4.  Section 800 South showing SES23-048.



Drillhole   Interval From To Cu (%) Pb (%) Zn (%) Ag (g/t) Au (g/t)

no significant results

0.70 332.55 333.25 0.29 0.19 0.32 anom. anom.

Table 3.  SES23-049 did not cut significant mineralization, as the hole crossed too high in the Sesmarias synform, much like SES23-041, drilled in 2021.  Fragments of massive sulfide mineralization are present in the major thrust fault that bounds and cuts the eastern, overturned limb of the Sesmarias synform.


Figure 5.  Section 500 South showing SES23-049 and SES23-051.  SES23-049 crossed the synform above the hinge zone, while SES23-051 crossed zinc-rich stockwork sulfide mineralization below the hinge zone.  Significant results for SES23-051 are found below in Table 5.



Drillhole   Interval From To Cu (%) Pb (%) Zn (%) Ag (g/t) Au (g/t)
SES23-050 samples in lab — no significant results expected, though crossed faulted east limb at 397.50 to 398.70 meters, below hinge zone

Table 4.  SES23-050 did not intersect any significant visible mineralization, as the hole crossed beneath the Sesmarias synform.  It did cross the eastern limb fault containing abundant disseminated and fragmented pyrite.


Figure 6.  Section 950 South showing SES23-050 crossing below the hinge zone.  Folding of the hinge zone is possible, as shown in the section, but not yet confirmed.



Drillhole   Interval From To Cu (%) Pb (%) Zn (%) Ag (g/t) Au (g/t)
SES23-051 9.00 456.80 465.80 anom. 0.99 2.35 11.7 anom.
and 8.00 467.80 475.80 anom. 3.04 3.47 50.7 wk anom.
strong stkwk 19.00 456.80 475.80 1.77 2.61 27.3
total stkwk 30.70 456.80 487.50 1.18 1.88 17.8
remainder of samples in lab — no significant results expected, below hinge zone

Table 5.  SES23-051 crossed 30.7 meters of zinc-rich stockwork sulfide mineralization beneath the hinge zone.  This included an intercept of 9 meters of semi-massive to massive sulfide mineralization and a further zone of 8 meters of semi-massive sulfides, followed by another 11.7 meters of stockwork sulfide mineralization.  The cross section for SES23-051 is shown above in Figure 4.



Drillhole   Interval From To Cu (%) Pb (%) Zn (%) Ag (g/t) Au (g/t)
SES23-052 5.60 358.60 364.20 0.45 0.33
and 7.00 366.20 373.20 anom. 0.84 2.72 24.8 wk anom.
incl. 4.00 368.20 372.20 anom. 3.40 wk anom.
3.00 370.20 373.20 anom. 1.33 wk anom.
2.00 370.20 372.20 anom. 45.1 wk anom.
w/i 28.40 358.60 387.00 total zone of sulfides, including insipient stkwk to massive mineralization
now cutting remainder of samples — no significant intervals of high-grade results expected, though several zones of stkwk exist

Table 6.  SES23-52 crossed the western, upright limb of the Sesmarias synform in the Sesmarias South area.  This is the first deeper intersection of the western limb in the Central and South zones at Sesmarias.  The intersect included 28.4 meters of variable sulfide mineralization from stockwork to massive mineralization.


Figure 7.  Section 1100 South showing SES022 and SES23-052 cutting the western limb of the Sesmarias synform.


Paul Kuhn, President and CEO of Avrupa Minerals, commented, “Geochemical and geological results from drilling in the Sesmarias Central and South Zones this year are a really positive revelation after nine years of working at Sesmarias.  The Team has put together a great, drillable massive sulfide target, and the results are confirming the robustness of that target.  It is clearly zoned along strike and proximity to the hinge zone in the central area, yet still has close to 2000 meters of mineralized strike length potential.  We are looking forward to continuing upgrade of the mineralization in the coming months.”

The Joint Venture just completed a 6-line, 2100-meter-long IP-Resistivity survey covering the North and Central Zones.  The hope is that the survey can assist in identification of stockwork sulfide mineralization in proximity to massive sulfides.  We expect final results before the end of the month and these will be reported in due time.

Minas de Aguas Teñidas, S.A. (“Sandfire MATSA” or “MATSA”) is a mining company which owns and operates the MATSA Mining Operations in the Huelva province of Spain. With a processing plant located to the north of the Iberian Pyrite Belt that sources ore from three underground mines, Aguas Teñidas and Magdalena Mines in Almonaster la Real and the Sotiel Mine in Calañas, Sandfire MATSA produces copper, zinc and lead mineral concentrates that are sold from the port of Huelva. Sandfire MATSA also holds an extensive portfolio of exploration tenements in both Portugal and Spain. Sandfire MATSA is a wholly-owned company of Sandfire Resources Limited, one of the largest copper-focused companies on the Australian Securities Exchange (ASX:  SFR).

Avrupa Minerals Ltd. is a growth-oriented junior exploration and development company directed to discovery of mineral deposits, using a hybrid prospect generator business model.  The Company holds one 49%-owned license in Portugal, the Alvalade VMS Project, presently optioned to Sandfire MATSA in an earn-in joint venture agreement.  The Company now holds one 100%-owned exploration license covering the Slivova gold prospect in Kosovo, and is actively advancing four prospects in central Finland through its in-process acquisition of Akkerman Finland Oy.  Avrupa focuses its project generation work in politically stable and prospective regions of Europe, presently including Portugal, Finland, and Kosovo.  The Company continues to seek and develop other opportunities around Europe.

For additional information, contact Avrupa Minerals Ltd. at 1-604-687-3520 or visit our website at www.avrupaminerals.com.

On behalf of the Board,

“Paul W. Kuhn”


Paul W. Kuhn, President & Director

This news release was prepared by Company management, who take full responsibility for its content.  Paul W. Kuhn, President and CEO of Avrupa Minerals, a Licensed Professional Geologist and a Registered Member of the Society of Mining Engineers, is a Qualified Person as defined by National Instrument 43-101 of the Canadian Securities Administrators.  He has reviewed the technical disclosure in this release.  Mr. Kuhn, the QP, has not only reviewed, but prepared and supervised the preparation or approval of the scientific and technical content in the news release.

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.



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