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Westminster's objective was to acquire and define under-explored targets that are drill ready and have the potential to evolve into large-scale discoveries. The company's first thrust has been achieved with its acquisition of a new mineral district-scale property near Navojoa, Sonora, Mexico. The state of Sonora contains world-class, precious and base-metal reserves and producing mines. This attractive region has a strong mining history and culture with favorable permitting and infrastructure that allow for aggressive year-round exploration.
Widespread mineralized skarns and surface alteration suggests that at least three potential porphyry systems occur within the district-scale Navojoa Property area. Topographic high outcroppings of malachite (copper) stained oxidized skarns in proximity to or at the contact with multiphase porphryritic granitoid bodies contain garnet, actinolite, tremolite, epidote, and magnetite mineral assemblages. Red box work limonite (after chalcocite) veins and fractures cross cut the skarn bodies. These oxidized leached veins contain remmanent copper values and upon crushing pannable gold is recovered. Although not yet mapped on a deposit scale, the district features widespread zones of hydrothermally altered metasediments and granitic bodies. Propylitic (chlorite-epidote), potassic (biotite), phyllic (sericite), and argillic (kaolinite-alunite) alteration zones typical of well developed gold-copper porphyry systems are proximal to the known skarns.
- Situated in the 70 sq mile New Copper & Gold Mineral District of Mexico
- Surrounded by Gold-Copper Porphyry Systems and operating mines
- i.e. Cananea, La Caridad, Piedras Verdes
- Within the 90-40 ma Laramide Granite Intrusion & Related Porphyry Belt
- Geologically inline with the "Great Cluster" Porphyry Copper Deposits
- Project claim size of 181 sq Km
- Supported by sound infrastructure
- Based in the politically stable NAFTA Country
- Opportunities for cost effective large scale discoveries
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- Copper Porphyry
- Copper + Molybdenum
- Molybdenum Porphyry
- Gold Porphyry
- Copper + Gold Porphyry
Most sought but RARE Especially with supergene enriched near surface blanket zone and associated skarns.
Phase I efforts in August of 2009 concentrated on a small part of one of three potential porphyry centers with gold-copper skarn and granite-hosted mineralization contained within the 19,362 hectare property. At the central Fafy-Yori target, an IP geophysical survey expanded a previously identified, strong chargeability anomaly which continues to be open in all directions, and now covers an area 2 1/2 kilometers by 3 kilometers. Fourteen Reverse Circulation drill holes totaling approximately 3,000 meters of drilling were centered on an area of approximately 800 meters in diameter, of the 3500 meter long IP geographic anomaly, and were restricted to drill locations adjacent to existing roads that were accessible and not affected by flooding. Management is pleased to report that initial drill results have intersected the outer shell of the large Fafy-Yori porphyry system. All holes returned anomalous silver and copper + zinc and molybdenum content within broad intervals of alteration and disseminated pyrite. Within the halo, silver content ranged to 20.4 g/t over 1.5 meters and copper to 0.54% over 4.5 meters with the broadest intercept being 205.7 meters of 0.35 g/t silver and 0.03% copper. One core hole was drilled at the Yori porphyry target, to a depth of 21 meters, where it was abandoned due to drill rig problems. This hole ended in sulphide mineralization with the final 0.35 meters assaying 720 gm/mt silver (23.15 ounces per mt). The results from this core hole further supports the interpretation that drilling completed to date has intersected the outer halo portion of a precious metal bearing copper porphyry system.
Phase I exploration also included regional prospecting and geological mapping which discovered new mineralized areas. Highlights include outlining a mineralized skarn over 1 1/2 kilometers of strike length at La Kala, the northern most porphyry target. Outside of the three main porphyry target areas, grab samples from newly discovered mineralization assayed gold ranging to 1.1 g/t and silver ranging to 54.3 g/t. These results prompted the staking of an addition mineral concession of 3,330 hectares by the Company. Approximately 90% of the Yori-Fafy IP target lies under young volcanic cover and remains undrilled. The expanded IP survey grid area was also covered by a Soil Gas Hydrocarbon (SGH) survey interpreted by Activation Laboratories Ltd., Ancaster, Ontario to have three separate high priority gold anomalous targets.
In 2011, limited drilling at the Saddle target identified silver-copper-zinc rich zones in pyrrhotite massive sulphide replacement styles of mineralization hosted in an extensive marble unit. A recent VTEM and Magnetic Airborne Survey in the area have identified more priority drill targets. The Company has assembled a strong professional Mexico based support team who will continue to assist in all phases of acquisition, permitting, exploration and development of the Navojoa Project.
The foregoing geological disclosure has been reviewed and verified by director Glen C. Macdonald P. Geo and a qualified person for the purpose of National Instrument 43-101, Standards of Disclosure for Mineral Projects.
More VTEM and IP geophysical surveys are planned to further identify the extent of the porphyry systems and associated copper-gold-silver skarns and replacements.
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