Highlights
PNDH003 (La Ollita) intersected 256m of 0.53 g/t Gold Equivalent 'AuEq' from 84m. including 70m of 0.66 g/t AuEq from 84m including 20m of 0.76 g/t AuEq from 92m including 94m of 0.58 ag/t AuEq from 246m including 8m of 1.09 g/t AuEq from 254m
Ongoing drilling at La Ollita (holes PNDH004-PNDH006) is confirming the presence of a large mineralized advanced argillic epithermal lithocap telescoped on a porphyry gold - copper system.
Sendero Executive Chairman,
Discovery Hole PNDH003
After initial drilling at La Pena and Tamberias, attention was shifted to the La Ollita target where previous drilling in the 1990's by
The upper part of the hole intersected a phreatomagmatic breccia with intense pervasive residual vuggy silica and clays with alunite and returned 70m of 0.66 g/t AuEq from 84m . In this advanced argillic style alteration were pyrite-enargite-chalcocite and black sulfide veins with metal values up to Au (1.1g/t), Ag (7.3g/t), Mo (200ppm) and Cu (0.3%). In addition, late intermediate sulfidation epithermal style Zn-Pb-Ag-Cu veins overprint the porphyry Au-Cu mineralization.
Below 159m the hole intersected high sulfidation mineralization and advanced argillic alteration overprinting porphyry-style sericite and potassic (K-feldspar-biotite) alteration with A-type quartz veinlets. The early porphyry phase returned 94m of 0.58 g/t AuEq from 246m . Note that Au-Cu grades dropped off considerably when entering extensive post-mineral faults below 340m, with the reduction in grade due to displacements by the faults rather than a reduction in Au-Cu grades of the system itself. Despite extension drilling into this post-mineral fault zone, we were unable to pass and stopped the hole on advice of the drill contractor.
The results of PNDH003 and the ongoing drilling at La Ollita are demonstrating the existence of an extensive well preserved telescoped Au-Cu-Ag mineral system concealed beneath the moraine cover. This finding is comparable to other deposits in the
The mineralization in PNDH003 is richer in gold than copper with average grades of 0.294 g/t Au to 0.142% Cu across the 256m interval, with the highest metal grades of 1.11 g/t Au (110-112m), 1.35% Cu (254-256m), 9.4 g/t Ag (254-256m) and 200pm of Mo (86-88m). Copper could become dominant in some zones of the system but for now the Company is reporting in gold equivalent (AuEq) as gold has been observed to be the dominant metal in the system to date. If PNDH003 was being reported in Copper Equivalent it would be comparable in grade to the resource grade at the nearby Josemaria deposit.
The remainder of the current drill program will be completed at La Ollita with holes PNDH004, PNDH005 and PNDH006 now completed and PNDH007 currently being drilled. Drilling will continue to mid to late April, with approximately 3,100m drilled so far.
La Pena (PNDH001) and Tamberias (PNDH002)
Drilling started at the two targets, La Pena (PNDH001) and Tamberias (PNDH002), with the most compelling exposed geology, surface soil and rock geochemistry, and magnetic and IP signatures. In both PNDH001 & PNDH002, Au-Cu and intermediate sulfidation epithermal style mineralization was encountered associated with quartz-diorite porphyry cut by various breccia facies including both magmatic-hydrothermal and late phreatomagmatic breccias. The early magmatic-hydrothermal breccia is mainly polymictic containing clasts of country rock, including porphyritic and fragmental rhyolite, granite, microdiorite, andesite, and volcaniclastic rocks, as well as porphyry Cu clasts with A-style veins.
Assay results confirm low tenor but consistent Au-Cu-Mo grades & Ag at La Pena. This is reminiscent of the periphery of Maricunga style gold-rich porphyry systems, and the Company is evaluating future drill hole locations to test different parts of these systems.
Additional Lithocap Targets - Ritzuko, Punta Negra and Vicunita
Following the positive findings at La Ollita, the Company has been conducting initial field investigations on other lithocap targets on the property known to host gold mineralization from historic geochemistry: two at Ritzuko and two on the new joint venture ground at Punta Negra and Vicunita. In all four locations there is a similar structural setting to La Ollita with the intersection of NE-NW faults and all four targets show visible advanced argillic alternation (alunite-pyrophyllite-dickite-kaolinite) on ASTER images.
About
The Company is focused on copper-gold exploration at its 100% owned
Contact:
Executive Chairman
Email: michael@senderoresources.com
Forward-Looking information
This press release contains 'forward-looking information' and 'forward-looking statements' (collectively, 'forward-looking statements') within the meaning of applicable Canadian securities legislation. All statements, other than statements of historical fact, are forward-looking statements and are based on expectations, estimates and projections as at the date of this press release. Forward-looking information herein includes, without limitation, statements regarding the potential grade and quantity of deposits on the Property, the Company's anticipated drilling program and results of its current further drilling program, the inferred geometry and mineralization of the Property, and the development of the Property and prospects thereof. Any statement that involves discussions with respect to predictions, expectations, beliefs, plans, projections, objectives, assumptions, future events or performance (often but not always using phrases such as 'expects', or 'does not expect', 'is expected' 'anticipates' or 'does not anticipate', 'plans', 'budget', 'scheduled', 'forecasts', 'estimates', 'believes' or intends' or variations of such words and phrases or stating that certain actions, events or results 'may' or 'could, 'would', 'might' or 'will' be taken to occur or be achieved) are not statements of historical fact and may be forward-looking statements. Forward-looking statements are necessarily based upon several estimates and assumptions that, while considered reasonable, are subject to known and unknown risks, uncertainties, and other factors which may cause the actual results and future events to differ materially from those expressed or implied by such forward-looking statements. Such factors include, but are not limited to; general business, economic, competitive, political and social uncertainties; the delay or failure to receive shareholder, director or regulatory approvals and actual results of exploration at the
QA/QC Statement
Sendero Resources follows industry standard diamond core drilling and sample analysis procedures. Drilling is done with PQ and HQ-size tools. The drill core is cut in half with a diamond rock saw and then half of the core is taken as a sample for analysis and the other as a log. Sampling intervals are 2 m intervals, producing samples between 5 and 15 kg. Half-core samples are transported to
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