(via TheNewswire)
Phase 1 work at Taquetren, this year included completing seventeen trenches and magnetometry, gradient-array IP and resistivity geophysical surveys. The work was spread across three prospects,
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Phase 2 trenching and geophysics to generate drill targets at
Highlights:
Rock chip results: 18.10 Au g/t, 13.43 Au g/t, 12.22 Au g/t, 11.48 Au g/t, and 9.92 Au g/t
Trench intersections include 5.2 m @ 1.8 g/t Au; 3.4 m @ 3.8 g/t Au; and 3.6m @ 1.0 g/t Au
Five clear resistivity anomalies are aligned with the vein and structural fabric orientation
Soil geochemistry and trenching are proving to be good and low-cost exploration tools. In addition, the geophysical survey identified five large resistivity anomalies consistent with buried veining or silicification typical of large epithermal gold systems seen elsewhere in
The aim is for Phase 2 work in 2023 to define targets that could be drill-tested in 2024. Additional trenching will focus on in-fill work. Extra geophysics could help to define a depth component to the five main resistivity anomalies.”
Taquetren, Rio Negro,
The Taquetren project encompasses an area of close to 59,000 hectares (Ha) and is located in the
Figure 1. Taquetren Location Map |
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Taquetren covers 58,667 hectares in six separate prospecting permits (Cateos). Most of the work to date has been focused on Cateos 1-4. Cateos 5 and 6 are more recent additions to the portfolio.
Work Summary
Initial reconnaissance mapping and sampling generated priority areas for follow-up work. The best results came from an area of long low hills where three prospects named
Robust rock chip and soil geochemistry results, and geological mapping, outline clear zones of anomalous mineralization. Subsequent activity included geological mapping, trenching and magnetometry, gradient array IP and resistivity geophysical surveys.
Geology
The main geological formations mapped at
In the southwest of the area, the Gastre Fault system traverses Taquetren in a northwesterly direction (see Figure 2, below). The Gastre fault system is a major or first-order crustal structure that hosts the Navidad silver deposit 120 km to the southeast. In the Taquetren project area a second-order structural fault system oriented to the northeast is evident. Gold-pyrite quartz veins, veinlets, and geophysical and geochemical anomalies are preferentially aligned northeast-southwest. The adjacent Calcatreau gold deposit is controlled by similar NE-SW oriented second-order structures.
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At Martha, there is evidence of a buried low-sulfidation epithermal system. Weak gold and arsenic anomalism in soil geochemistry are spatially related to rhyolitic domes and ignimbritic flows. There is silicification visible at surface, and notable rock float with well-defined lattice bladed textures that may represent the boiling zone of a typical epithermal system.
Figure 2. Taquetren Structural and Geological Setting |
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Stream Sediment and Rock Chip Sampling Program
Since 2021, a total of 270 stream sediment or soil samples and 565 rock chip samples have been taken (see Figures 3 and 4, below). The best results are clustered in the western area of Coiron 3, and into Coiron 2 and Coiron 4. Notable rock chip results from veins sampled in the
Figure 3: Taquetren soil sample results (Au) |
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Figure 4: Taquetren rock chip results (Au) |
Trenching
In 2023, seventeen trenches were excavated and sampled at Taquetren. Fifteen trenches were dug at
Figure 5. |
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Table 1. Trench results
Trench | Intersection | Comment | Note on Trench Location | ||
Length (m) | Au g/t | Pb % | |||
T01 | 5.2 | 1.80 | Including 1.00 m @ 4.37 g/t Au | Soil anomaly (163ppb Au) | |
Including 0.90 m @ 5.2g/t Au | |||||
T02 | 2.5 | 0.22 | Soil samples of 7ppb and 4 ppb Au. 30 mfrom a Qtz vein subcrop(0.5 m @ 3.13 g/t Au) | ||
T03 | 2.2 | 0.94 | Including 0.40 m @ 4.61 g/t Au | Soil anomaly (77 ppb and 23 ppb Au) 1 m from a Qtz vein subcrop (0.4m @ 11.0 g/t Au) | |
T04 | 0.1 | 13.43 | 1 m from a Qtz vein subcropand calcite (0.2m @4.08g/tAu) | ||
1.5 | 0.21 | ||||
3.1 | 0.51 | ||||
T05 | 0.6 | 0.12 | 3 m from a Qtz vein subcrop (0.1m @0.28 g/n Au). Soil anomaly (23ppb Au) | ||
0.6 | 0.12 | ||||
0.4 | 0.13 | ||||
0.4 | 0.13 | ||||
T06 | 3.6 | 1.06 | 10 m from a Qtz vein subcrop (0.2 m @2.46 g/t Au) | ||
T07 |
3.4 |
3.84 | Including 0.35 m @ 29.54 g/tAu | 5 m from a Qtz vein subcrop (0.2 m @18.28 g/t Au) Soil anomaly (21 ppb Au) | |
Including 0.45 m @ 4.08 g/t Au | |||||
T08 | 0.5 | 0.22 | On a Qtz vein subcrop 0.5 m in width | ||
T09 | 3.0 | 1.41 | 0.8 | Including 0.60 m @ 4.84 g/t Au | 1 m from a Qtz vein subcrop (0.9 m @6.58 g/t Au) |
T10 | 1.9 | 0.45 | 1 m from a Qtz vein subcrop (1.0 m@0.87g/t Au) | ||
T11 | 0.5 | 2.82 | Area with quartz float upto 10 cm in size. | ||
T12 | 0.7 | 1.20 | Oxidised veinlet swarm 2 m width. (0.2 m@12.22 g/t Au) | ||
T13 | 0.5 | 1.12 | Area with quartz float upto 5 cm in size and calcite veins upto 10 cm wide. | ||
T14 | 0.4 | 1.02 | 2.56 | 10 m from a Qtz vein subcrop (0.3 m@0.39 g/t Au) | |
T15 | No significant values | 15 m from a Qtz vein ‘Veta Juan’ | |||
T16 | No significant values | 40 m from a Qtz vein ‘Veta Nueva’ – Martha Prospect | |||
T17 | No significant values | Centro Prospect |
Multi-element assay results of arsenic and lead are also highly variable on a local level, reinforcing the erratic nature of mineralization at Taquetren. Gold is sometimes correlated with arsenic values, however in other cases it is correlated with lead values. Copper, zinc, and silver values are generally insignificant.
Another interesting feature is the presence of mineralization found in small quartz veinlets (3-10 mm wide). The veinlets are associated with chloritic and argillic alteration, and with a significant degree of oxidation (presumably from pyrite). When abundant these fine veinlets form swarms and are mapped as a vein set. Occasionally silicified wall-rock material exhibits gold mineralization without abundant quartz veinlets.
The trenching at Martha did not replicate the results that were previously reported in high grade copper grab samples. No significant values were encountered in trenches at Martha or Centro prospects.
Full trench results are shown in Table 1, above.
Figure 6. |
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Geophysics
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Figure 7. Taquetren Resistivity Map |
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The magnetometry survey shows lows in the Martha zone in the Total Field and Reduction to Pole results. The magnetic lows may represent magnetite destruction caused by hydrothermal fluid-flow. When coupled with the arsenical geochemical signature and the bladed crystal textures, it is possible to interpret Martha as the upper part of a low-sulfidation epithermal system. See Figure 8, below.
Figure 8. Taquetren Total Magnetic (left) and Reduction to Pole (right) Maps | |
Discussion of Results and Work Plan
The work to date shows that there are widespread gold occurrences at Taquetren over a large area. A potentially significant NE-SW mineralizing system has been identified. Soil geochemistry and trenching are proving to be good and low-cost exploration tools.
The large resistivity anomalies coincident with the main mineralizing trend suggest that there is a buried component to the mineral system that warrants further investigation. The Quantec geophysicists noted that the strength of the resistivity anomalies were comparable with the anomalies seen in the
It was concluded that the mineralization in the
Quality Assurance and Quality Control
As part of the QA/QC process, blanks and duplicate samples are inserted into the sample chain at the base camp and sample storage site located in the city of Ing. Jacobacci, Rio Negro province. From the base camp, all samples are transported securely by land through the company’s truck and submitted by the company’s staff to the
Qualified Person
The technical information in this news release was reviewed by
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Sean Hurd
President and CEO
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