Size:72,820 hectares concession - one of the largest landholdings in the area
Metals:Gold, Silver, Copper
Target:Epithermal low sulphidation
Stage:Early Stage
Ownership:Application - Title Pending
Location:Located approximately 160 km east of Hermosillo in the prolific Sierra Madre Occidental gold belt, Sonora State, Mexico. The Mariana property is accessible from Hermosillo in a 3-hour drive on paved and well-maintained gravel roads.
Infrastructure:All year round water supply and high tension power lines are located on or near the property. The nearby town of Sahuaripa (pop. 3,000), has services such as electricity, water, hotels, banks, restaurants, and gas station.
Mines close by:The property is located in close proximity to several operating mines: Mulatos (Alamos Gold), La India (Agnico Eagle) and Dolores Mines (Pan American Silver).

Project Geology

The Mariana Project is located in the Sierra Madre Occidental area of Northern Mexico. The property area is more specifically located in the Sahuaripa District, which geologically consists of Cretaceous to Tertiary sedimentary and volcanic sequences. Marine sedimentary limestones, sandstones and siltstones belonging to the Lower Cretaceous El Palmar Formation are stratigraphically followed by Upper Cretaceous agglomerates, sandstones, and andesite tuffs. These El Palmar Formation sediments have been structurally sheared and thrust-faulted over the more recent sediments and andesite tuffs.

Overlaying the marine sediments and tuffs are a series of volcano-sedimentary rocks and andesitic flows. Regionally, this stratigraphy is known as the “Lower Volcanic Sequence”. Upper Cretaceous to Lower Tertiary granodiorite and andesite porphyries intrude these earlier marine sediment and volcano-sedimentary sequences. A Tertiary sequence of andesite-basalt flows and rhyolite tuffs known as the “Upper Volcanic Sequence” (likely post-mineral) overlays this stratigraphy.

Regionally, these units, particularly the interface between the Lower and Upper Volcanic Sequences, host several significant gold and silver deposits including the Mulatos, Dolores and La India mines amongst others.

Main Targets: Oregano and Corral

  • The Oregano and Corral are very similar low sulphidation vein systems with typical lattice-bladed, crustiform-colloform banded, and cockade quartz textures.
  • It appears that the surface erosional level at Oregano is a little deeper than at Corral.
  • The Oregano vein system is at least 3 km long, forms a zone approximately 400m wide and the main Oregano vein is up to approximately 3m wide. The Oregano vein system is open along the strike in both directions.
  • Surface sampling returned numerous anomalous gold assays with grab samples that returned up to 2.47 g/t Au and e.g. continuous chip samples that assayed up to 1.59 g/t Au and 34.7 g/t Ag over 3m.
  • Corral is located approximately 1 km to the east from Oregano.
  • The Corral vein system is at least 1.3 km long and over 400 m wide with the individual quartz veins that can reach up to 2 m in width. The Corral vein system is open in all directions.
  • At Corral, the reconnaissance composite rock sampling of quartz vein material over 10m returned 0.6 g/t Au.
  • There is no previous drilling on these properties and Oregano and Corral are drill-ready targets.
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