Terra Balcanica Intercepts 607 g/t Ag Eq. Over 3.0 m and 670 g/t Ag Eq. Over 3.9 m At Cumavici in Bosnia and Herzegovina
Rhea-AI Summary
Terra Balcanica (OTC:TEBAF) reported high‑grade drill results from Cumavici Ridge on March 17, 2026, including 607 g/t AgEq over 3.0 m and 670 g/t AgEq over 3.9 m. Results support a tabular, silver‑antimony dominant body traced over ~180 m along strike and tested to ~200 m down dip.
Drill intercepts remain open down dip and to the NW, with the company planning follow‑up drilling to test linkage to Cumavici Crest and a 2026 program at nearby Cumurnica (~1.5 km SW).
Positive
- High‑grade intercepts of 607 g/t AgEq over 3.0 m and 670 g/t AgEq over 3.9 m
- Continuity: >24 positive holes over 180 m strike and tested to >200 m down dip
- Planned follow‑up drilling to test linkage could extend mineralization to >650 m strike
- Sample recoveries at reported collars show 100% core recovery
Negative
- Reported lengths are drilled intervals; true widths are undetermined, increasing geometric uncertainty
- Mineralization remains open down dip, requiring additional drilling to confirm continuity and tonnage
- AgEq values use assumed metal prices and recoveries, introducing price/recovery sensitivity to reported grades
News Market Reaction – TEBAF
In the Mar 17 session, TEBAF gained 2.50%, reflecting a moderate positive market reaction.
Data tracked by StockTitan Argus on the day of publication.
AI-generated analysis. How Rhea-AI works. Not financial advice.
Vancouver, British Columbia, March 17, 2026 (GLOBE NEWSWIRE) -- Terra Balcanica Resources Corp. (“Terra” or the “Company”) (CSE:TERA; FRA:UB1; OTC:TEBAF) is pleased to announce additional high-grade assay results from the Phase III drill campaign at the Cumavici Ridge polymetallic, epithermal vein target within its Viogor-Zanik project in eastern Bosnia and Herzegovina.
Highlights
- Drillhole CMV25005 intersected 607 g/t Ag Eq. over 3.0 m including:
-
- 842 g/t Ag Eq which includes
3.05% Sb over 1.7m;
- 842 g/t Ag Eq which includes
- Drillhole CMV25006 intersected 670 g/t Ag Eq. over 3.9 m including:
-
- 2115 g/t Ag Eq which includes
9.58% Sb over 1.0 m;
- 2115 g/t Ag Eq which includes
- Step out drillholes located 65 m northwest of CMV25004 which reported 636 g/t Ag Eq. over 4.3 m and 38 m SW of CMVD005 which intercepted 326 g/t Ag Eq. over 10 m;
- Results confirm the high-grade nature and continuity of mineralisation at Cumavici Ridge along strike towards NW potentially linking it with the Cumavici Crest zone. Mineralization remains open down dip to southwest;
- Cumavici Ridge-Crest fault-hosted system is one of the four targets along the largely untested, 5 km long corridor of Ag-rich, base metal mineralization.
Terra Balcanica CEO, Dr. Aleksandar Mišković, commented: “Two additional drill intercepts confirm that we have begun to unequivocally define a tabular, high-grade body of silver-antimony dominant mineralization at Cumavici Ridge. With over two dozen positive drill holes spread over 180 m of along strike and testing the southwest-inclined structure to over 200 m down dip, Terra is now looking to drill test the linkage to the neighboring Cumavici Crest target and in doing so extend the mineralization to over 650 m along strike. Furthermore, in 2026, we are poised to drill previously untested Cumurnica target located only 1.5 km to the southwest.”
| Hole ID | From (m) | To (m) | Length (m) | Ag (g/t) | Au (g/t) | Sb (%) | Pb (%) | Zn (%) | Ag Eq. (g/t) |
| CMV25005 | 96.0 | 99.0 | 3.00 | 175 | 0.69 | 2.11 | 1.94 | 4.05 | 607 |
| including | 97.3 | 99.0 | 1.7 | 258 | 1.15 | 3.05 | 1.34 | 2.67 | 842 |
| CMV25006 | 91.4 | 95.3 | 3.90 | 168 | 0.72 | 2.84 | 0.66 | 0.56 | 670 |
| including | 92.7 | 93.7 | 1.00 | 461 | 1.84 | 9.58 | 1.39 | 1.11 | 2115 |
Table 1. Assay results from drillholes CMV25003 and CMV25004 with the interval lengths reported as drilled lengths, not true widths given that true morphology of the mineralized zone is undetermined. Silver equivalents (“AgEq”) are based on assumed metal prices of US
Figure 1. Photograph of PQ3 diameter core between 97.0 and 99.60 m downhole in CMV25005 (top) and between 90.8.0 and 93.60 m depth in CMV25006 (bottom). Massive, dark sulphide interval marked by green box in the lower box correlates to the high-grade Sb mineralization while banded, dark brown segment in the central part of the upper core box indicates Zn rich zone (click here to view image).
Drillcore Observations
The mineralized intervals intercepted by drillholes CMV25005 and CMV25006 are examples of the typical high grade, massive sulphides of polymetallic nature encountered at Cumavici Ridge since 2022. Mineralization is typified by massive sulphides which can be broadly grouped into a silver-antimony rich, sulphosalts-dominant interval and a colloform banded brown grey, Pb-Zn rich interval of massive sphalerite and galena. The Ag-Sb mineralization, which includes the reported drillholes, is an example of a series of underexplored polymetallic veins that form part of a regional NW-SE trending epithermal system. Others include: Cumurnica, Joseva, and Seoce.
| Hole ID | Easting | Northing | Elevation (m) | Dip | Azimuth (°) | Depth (m) | Recovery (%) |
| CMV25005 | 360133 | 4888481 | 610 | -81.81 | 41.58 | 115.4 | 100 |
| CMV25006 | 360133 | 4888481 | 610 | -71.92 | 33.50 | 106.1 | 100 |
Table 2. Collar location and DDH data for the CMV25003/CMV25004 drillholes (WGS84/UTM 34N).
Figure 2. Geological map illustrating the drillholes at the Cumavici Ridge locality. AgEq values are labelled for selected 2022, 2023 and 2025 drill intercepts (See Company’s new releases dated 13 November 2023, 27 February 2023). The coordinate reference system is WGS84/UTM Zone 34N (click here to view image).
Geology of Cumavici Ridge Target
The Cumavici license is dominated by volcanic rocks (tuffs and pyroclastic breccias) which have been crosscut by generally NW-SE trending structures and are part of a large epithermal mineral system. Mineralization is silver and antimony dominant with further gold-lead-zinc (Figure 1).
Terra’s drilling has confirmed three polymetallic systems so far: Joseva, Cumavici Crest, and the flagship vein system at Cumavici Ridge. The Cumurnica and Kazani targets remain to be drilled. Mineralisation is characterised by sphalerite-stibnite-galena and further sulphosalts minerals which are associated with quartz and calcite veining and breccia cement. The mineralisation occupies faults which crop out at surface as distinctive topographic lows, coinciding with magnetic lows and often with mineralisation visible within fault gouge.
QA/QC
Half PQ3 core samples were delivered to ALS Bor, Serbia for sample preparation and analysis at the ALS laboratory Loughrea, Ireland an ISO/IEC 17025:2017 certified testing laboratory. Sample preparation PREP-31BY method was used on all core samples. This involves crushing to
Qualified Person
Dr. Mišković is the President and CEO of the company and the Company’s designated Qualified Person within the meaning of National Instrument 43-101 Standards of Disclosure of Mineral Projects (“NI 43-101”). Dr. Mišković supervised the preparation of the information contained in this news release and validated that the information is factual and accurate.
About the Company
Terra Balcanica is a polymetallic and energy metals exploration company targeting large-scale mineral systems in the Balkans of southeastern Europe and northern Saskatchewan, Canada. The Company has
ON BEHALF OF THE BOARD OF DIRECTORS
Terra Balcanica Resources Corp.
“Aleksandar Mišković”
Aleksandar Mišković
President and CEO
For the complete information on this news release, please contact Aleksandar Mišković at amiskovic@terrabresources.com, +1 (514) 796-7577, or visit www.terrabresources.com/en/news.
Cautionary Statement
This news release contains certain forward-looking information and forward-looking statements within the meaning of applicable securities legislation (collectively “forward-looking statements”). The use of any of the words “will”, “intends” and similar expressions are intended to identify forward-looking statements. These statements involve known and unknown risks, uncertainties and other factors that may cause actual results or events to differ materially from those anticipated in such forward-looking statements. Such forward-looking statements should not be unduly relied upon. Actual results achieved may vary from the information provided herein as a result of numerous known and unknown risks and uncertainties and other factors. The Company believes the expectations reflected in those forward-looking statements are reasonable, but no assurance can be given that these expectations will prove to be correct. The Company does not undertake to update these forward-looking statements, except as required by law.
