Zacatecas Silver (TSXV: ZAC) filed a National Instrument 43-101 Standards of Disclosure for Mineral Projects technical report for its Esperanza Gold Project in Mexico.
The report is called “Independent Technical Report, Esperanza Gold Project, Morelos State, Mexico” and it was dated December 30, 2020. It supports the company’s original Mineral Resource Estimate (MRE) for the project.
The estimate includes:
- Pit-Constrained Measured and Indicated Mineral Resource Estimate of 30.3 million tonnes at 0.97 g/t AuEq (0.92 g/t gold and 8.6 g/t silver) for 941 thousand ounces AuEq (899 thousand ounces gold and 8.4 million ounces silver).
- Also, Out-of-Pit Measured and Indicated Mineral Resource Estimate of 270 thousand tonnes at 1.73 g/t AuEq (1.58 g/t gold and 11.0 g/t silver) for 15 thousand ounces of AuEq (14 thousand ounces of gold and 96 thousand ounces of silver).
- Pit-Constrained Inferred Mineral Resource Estimate of 8.3 million tonnes at 0.93 g/t AuEq (0.86 g/t gold and 14.7 g/t silver) for 248 thousand ounces AuEq (229 thousand ounces gold and 3.9 million ounces silver).
- Additionally, Out-of-Pit Inferred Mineral Resource Estimate of 479 thousand tonnes at 1.83 g/t AuEq (1.77 g/t gold and 11.8 g/t silver) for 28 thousand ounces of AuEq (27 thousand ounces of gold and 182 thousand ounces of silver).
Zacatecas displays two key projects
Zacatecas two key projects are the Esperanza Gold Project and the Zacetecas Silver Project in the Zacatecas State. Both of which are in Mexico.
Esperanza is an advanced stage, low-cost, low-capital requirement and low technical risk growth project in Morelos state, Mexico. Alamos pushed the project through engineering, metallurgical work, and focused on stakeholder engagement, including community relations building.
Zacatecas announced a MRE at Esperanza for a measured and indicated mineral resource estimate of 30.5 million tonnes at 0.97 g/t gold equivalent (AuEq) for 956 thousand ounces AuEq and an inferred mineral resource estimate at 8.7 million tonnes at 0.98 g/t AuEq for 277 thousand ounces AuEq.
The company’s silver project is in the Fresnillo silver belt in the Mexican Zacatecas state. The Fresnillo silver belt has produced over 6.2 billion ounces of silver to date.
The company presently holds 7,826 hectares (or 19,338 acres) of land that is highly prospective for low-sulphidation and intermediate-sulphidation silver base metal mineralization and potentially low-sulphidation gold-dominant mineralization.
Zacatecas announced a MRE at the Panuco Deposit of 2.7 million tonnes at 187 g/t silver equivalent (Ag/Eq) for 16.4 million ounces AgEq.
The MRE generated using 3D block model
Zacatecas Silver generated the MRE using inverse distance cubed for gold and silver for grade interpolation within a 3D-block model. The model is constrained by mineralized zones defined by wireframe solid models. The company used 1.5 metre capped composites for grade interpolation, with ellipse ranges for measured and indicated mineral resource grade interpolation at 20 and 40 metres respectively.
The bulk density values used for the MRE came from 71 samples collected during historical drill core re-assaying .
The overall database for the MRE has 399 drill holes with 69,924 metres in total. Specifically, 341 holes totalling 15,034 metres intersected the mineralization wireframes used for the MRE. The drill hole database has both assays for silver and gold, but also other metals of no economic importance. The company verified data from the historical database by re-sampling 2,080 gold-silver mineralized historical sample intervals. Additionally, Zacatecas Silver completed drill hole collar location verification surveying and standard bulk density re-measurement. It confirmed the accuracy of collar locations and the validity of historical bulk density measurements.
The technical report can be found on SEDAR, including all qualifications, assumptions and exclusions to the MRE.