Fredonia Mining Inc. (TSX-V: FRED), is pleased to announce that it has received the remaining assays from the recently completed drilling programme at the Company’s El Dorado Monserrat property, located in Santa Cruz, Argentina.
As previously reported, 10 HQ diamond drill core holes were drilled at LH, with a further drill hole on the ‘Gladys’ prospect, 4.5 km to the northwest. In total 11 holes were drilled for 2,482.80m.
“We are extremely pleased and encouraged with the results obtained in the recent drilling campaigns,” commented Estanislao Auriemma, CEO of Fredonia. “The drilling results confirm the presence of high grades and the possibility for increases in both the strike and depth potential at La Herradura; especially at depth confirming and further increasing the economic potential of La Herradura. We anticipate that drilling will recommence in October and will focus on confirming the extensions of the prospect’s mineralization and grades. Drilling in October is also designed to test other prospective areas within EDM. The primary objective remains to confirm and increase the overall potential of the El Dorado Monserrat property and advance LH and the Main Veins to a compliant maiden resource.”
Table of the completed June 2022 drill program
The Fredonia technical team is now focussed on the interpretation of the drill sections and the assimilation of this information with the assays in order to plan a further drill programme targeting the potential high grade extensions.
The Company anticipates drilling at LH will recommence in October. Preparations are already underway for this 2,500m follow-up drilling phase, which will also include further exploration drilling on other areas considered prospective targets on the EDM property.
Drill holes have intercepted hydrothermal breccias, veins and stockworks, hosted in a phreatomagmatic breccias, felsic domes and dykes that intrude the andesite flows which form the country rock.
The geological model for the mineralisation being developed by the exploration team is constantly being refined as drilling and mapping information is integrated. The data continues to support the presence of a potential diatreme surrounded by an extensive brecciated host system, the dimensions of which are as yet undefined being geologically open in all directions. The Fredonia geological team believe further drilling is warranted to define this model and extend the zone of known mineralisation.
The final assay results for all the drill holes at LH are now available. The significant intersections are tabled below. The drilling has added additional credibility that the potential for a large tonnage Au-Ag occurrence with included high grade zones exists at LH.
The results to date further support and indicate the geological model of a low sulphidation epithermal Au-Ag mineralised system within an extensive lower grade breccia halo hosted in a predominantly andesitic, variably brecciated formation.
Table of best intersections
|Hole ID||From||To||Interval||Au Eq g/t||Au g/t||Ag g/t|
|Not previously reported|
The recent drilling continues to enhance the resource potential at LH and the assays have confirmed the presence of wide intersections of mineralised material with higher grade inclusions. This is specifically evident in hole HDDH 40 with 7m @ 1.88g/t Au with an included 0.4m @ 26.4g/t Au.
Historical drillholes in the same prospect area, including previous drilling by Fredonia are:
Table of (selected) historic drill intersections, La Herradura
|Hole ID||From||To||Interval||Au g/t||Ag g/t|
Gold mineralisation is related to a quartz + sericite alteration and minor bladed calcite and adularia, interpreted as evidence of a boiling zone in an epithermal system. The shallow and distal zones show a chlorite + hematite + pyrite alteration, while in the deeper sections there are veins of platy calcite + fluorite. Superimposed on the system is an alteration halo of kaolinite + alunite and vuggy quartz, which occurs in shallow and medium-deep sectors.
Drill hole (geological) interpretations are now underway and once completed the updated interpretations of the LH drill sections will assist in determining the hole by hole detail of the next phase of drilling at LH. The objective of the follow-up programme remains to advance LH towards a maiden resource estimate.
The drill programme was primarily to target the extensions, both down dip and along strike of the high grade intervals in drill holes HDDH013 and HDDH011 and their potential depth extensions. These historic drill holes are about 250m apart along a defined roughly west – east strike of the mineralised trend identified to date. The drill holes drilled further along strike to the east, including HDDH40, 41 and 43 have geologically and geochemically extended the mineralised trend by potentially 300m to the east and remains open. Mineralisation is also identified to depths of >200m.
The interpretation of the geological intersections in holes HDDH 41 and 43 and the low ratio of Ag:Au relative to the higher grades and ratios in HDDH40 may indicate that there is potential at depth. If this is conclusive, step-backs to HDDH41 and 43 are warranted as well as further deeper drilling to the east. The IP survey conducted over the area last year also indicates deeper IP anomalies to the east of drill hole HDDH40. These vectors point to significant potential to the east and down plunge.
Based on drill intersections to date the mineralised system is interpreted to remain open in all directions and Fredonia believes more drilling is warranted.
Drilling the southwest area of LH, specifically holes DHHD39 and 44 has proved gold (and silver) mineralisation is both present and remains open in the southern LH block, an area which has not previously been targeted. This mineralisation hosted in andesitic rock represents a new area for discovery.
A single drill hole, GLDDH001, targeted the Gladys vein which outcrops over 1km located near the Abanico veins which are a southern continuation of the Main Veins. Gladys occupies a regional west northwest transtensional shear corridor. A historical barite pit of 100m long and 8m wide, shows a dacitic dike intruding in andesites, related to hydrothermal breccias and veins, thickness up to 2.4m. Previous exploration included sawn channel samples, which were anomalous in gold and silver.
GLDDH001 is the first drilling carried out in this corridor, and intercepted, from 86.0m, 4.0m@ 16.94g/t Ag, in a fault zone filled with gouge, clays and chalcedonic clasts with poor drill core recovery, gold values were generally low to below level of detection.
Quality Assurance/Quality Control
All core samples were submitted to the principal Alex Stewart Laboratories in San Julián city for preparation, and in Mendoza city for the analysis. Alex Stewart Laboratories is independent of Fredonia. All samples were analysed for Au and Ag by fire assay/ AA finish 50 g, plus a 39-element ICP-AR finish. Fredonia followed industry standard procedures for the work with a quality assurance/quality control program. Blanks and reference material of High grade/ Low grade Gold and High grade/ Low grade Silver standards were included with all sample shipments to the principal laboratory. Field duplicates were made from coarse reject. Fredonia detected no significant QA/QC issues during review of the data. Mr. Marc J. Sale, is an independent qualified person as defined by Canadian National Instrument 43-101 and has read and approved the technical contents of this release.
Mr. Sale has previous experience with the EDM property and the historical QA/QC procedures undertaken for the preparation of previous results, and has previously conducted the verification activities on drilling and sampling results described in Fredonia’s technical report entitled “Technical Report on the El Dorado-Monserrat Property In Santa Cruz Province, Argentina” dated February 15, 2021, subject to the limitations described therein. Mr. Sale was not physically present to inspect and take verification samples from drill core in the most recent drilling campaign, but did conduct desktop-based verification of drill results against data-base information provided by management to ensure the assays results presented are those in the database. Digital ‘original’ final assay reports (certificates) were provided to the QP at the time of disclosure for verification.
Fredonia indirectly owns a 100% interest in certain license areas (totalling approximately 18,300 ha.), all within the Deseado Massif geological region in the Province of Santa Cruz, Argentina, including the following principal areas: El Aguila, approx. 9,100ha, Petrificados, approx. 3,000ha, and the flagship, advanced El Dorado-Monserrat property covering approx. 6,200ha located close to Anglo Gold Ashanti’s Cerro Vanguardia mine, subject to a 1.5% net smelter return royalty on the EDM project, 0.5% net profits interest on Winki II, El Aguila I, El Aguila II and Hornia (ex Petrificados).
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We acknowledge the [financial] support of the Government of Canada.