The company's North Sonora Exploration project consists of three claim areas - Cumaro, Oso Negro and La Lola. While Heliostar maintains the claims in good standing, they are not currently a focus for the company.
Cumaro
Snapshot
Status: Exploration
Location: Sonora, Mexico
Ownership: 100%
Metals: Gold/Silver
Royalty: 0%
Overview
Cumaro is a five square kilometre claim that lies along trend from Couer's El Picacho property. It hosts the extensions of the El Picacho, Dos Amigos, and Basaitegui Veins. In February SilverCrest Metals announced the completion of forty-two holes with twenty-one holes at the El Piacho project, reporting an average of4.1 metres estimated true width (ETW) grading 8.14 g/t gold and 49.7 g/tsilver1. The best hole returned 7.25 metres ETW grading 40.49 g/t gold and 260.4 g/t silver. These intercepts are approximately 1,800 metres along strike from Heliostar’s Cumaro claim.
The geology of the El Picacho - Cumaro district can be considered as two halves, with the western half comprising outcropping precious-metal bearing veins that project directly from the El Picacho claim on to the Cumaro claim. The eastern half is interpreted to have been downthrown relative to the western half, thus potentially preserving the El Picacho mineralized level at shallow depth. Surface alteration at Cumaro comprises corridors of clay, quartz and calcite; assemblages that support the shallow level geological interpretation of the western block at Cumaro.
In early2022, Heliostar announced results from eleven holes testing the Verde target on the eastern half of the property. Drilling returned results up to 1.65 g/t over3m within 0.89 g/t over 8.1m. Grades were lower at depth than at surface, due to a less brittle tuff host rock deeper in the system.
La Lola
Snapshot
Status: Exploration
Location: Sonora, Mexico
Ownership: 100%
Metals: Gold
Royalty: 0%
Overview
The La Lola property is a 6,360-ha land package in northern Sonora. This region is home to Bear Creek mining's Mercedes mine, First Majestic Silver’s Santa Elena mine, Coeur Mining's Las Chispas deposit, Silver Tiger Metals’ El Tigre project and Grupo Mexico’s giant La Caridad mine.
The property includes the prospective La Barra vein, a 5-kilometre-longquartz-carbonate-fluorite vein with elevated values of gold, silver and pathfinder elements. In outcrop, the vein is up to forty metres wide and has textures typical of shallow epithermal formation.
Broad clay alteration, fluorite and low temperature textures suggest that the surface expression of the La Barra vein is the top of an epithermal system and that the metal-rich zone of the epithermal system may exist at depth.
Values up to56.6 g/t gold and up to 424 g/t silver have been found within the larger vein zone and are believed to be a result of the stronger pulses of mineralization which were able to reach closer to the surface. Historic mining on the vein has focused on fluorite that occurs near the surface. This same feature is found at other productive systems such as at First Majestic's Los Gatos mine in Chihuahua.
Several other vein zones have been identified on the property but have received little historical sampling or mapping. These represent further exploration opportunities.
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Oso Negro
Snapshot
Status: Exploration
Location: Sonora, Mexico
Ownership: 100%
Metals: Gold
Royalty: 0%
Overview
Oso Negro is a historic mining district with outcropping veins returning samples up to 2,680g/t silver and 100.5 g/t gold from dump samples. Within the district, numerous veins are known and can be traced for hundreds of metres at surface, including the El Sahuaro, El Prospecto, Santa Rosa, Del Monte, Tere, and El Manchuri Veins.
Cumaro
Snapshot
Status: Exploration
Location: Sonora, Mexico
Ownership: 100%
Metals: Gold/Silver
Royalty: 0%
Overview
Cumaro is a five square kilometre claim that lies along trend from Couer's El Picacho property. It hosts the extensions of the El Picacho, Dos Amigos, and Basaitegui Veins. In February SilverCrest Metals announced the completion of forty-two holes with twenty-one holes at the El Piacho project, reporting an average of4.1 metres estimated true width (ETW) grading 8.14 g/t gold and 49.7 g/tsilver1. The best hole returned 7.25 metres ETW grading 40.49 g/t gold and 260.4 g/t silver. These intercepts are approximately 1,800 metres along strike from Heliostar’s Cumaro claim.
The geology of the El Picacho - Cumaro district can be considered as two halves, with the western half comprising outcropping precious-metal bearing veins that project directly from the El Picacho claim on to the Cumaro claim. The eastern half is interpreted to have been downthrown relative to the western half, thus potentially preserving the El Picacho mineralized level at shallow depth. Surface alteration at Cumaro comprises corridors of clay, quartz and calcite; assemblages that support the shallow level geological interpretation of the western block at Cumaro.
In early2022, Heliostar announced results from eleven holes testing the Verde target on the eastern half of the property. Drilling returned results up to 1.65 g/t over3m within 0.89 g/t over 8.1m. Grades were lower at depth than at surface, due to a less brittle tuff host rock deeper in the system.
La Lola
Snapshot
Status: Exploration
Location: Sonora, Mexico
Ownership: 100%
Metals: Gold
Royalty: 0%
Overview
The La Lola property is a 6,360-ha land package in northern Sonora. This region is home to Bear Creek mining's Mercedes mine, First Majestic Silver’s Santa Elena mine, Coeur Mining's Las Chispas deposit, Silver Tiger Metals’ El Tigre project and Grupo Mexico’s giant La Caridad mine.
The property includes the prospective La Barra vein, a 5-kilometre-longquartz-carbonate-fluorite vein with elevated values of gold, silver and pathfinder elements. In outcrop, the vein is up to forty metres wide and has textures typical of shallow epithermal formation.
Broad clay alteration, fluorite and low temperature textures suggest that the surface expression of the La Barra vein is the top of an epithermal system and that the metal-rich zone of the epithermal system may exist at depth.
Values up to56.6 g/t gold and up to 424 g/t silver have been found within the larger vein zone and are believed to be a result of the stronger pulses of mineralization which were able to reach closer to the surface. Historic mining on the vein has focused on fluorite that occurs near the surface. This same feature is found at other productive systems such as at First Majestic's Los Gatos mine in Chihuahua.
Several other vein zones have been identified on the property but have received little historical sampling or mapping. These represent further exploration opportunities.
Oso Negro
Snapshot
Status: Exploration
Location: Sonora, Mexico
Ownership: 100%
Metals: Gold
Royalty: 0%
Overview
Oso Negro is a historic mining district with outcropping veins returning samples up to 2,680g/t silver and 100.5 g/t gold from dump samples. Within the district, numerous veins are known and can be traced for hundreds of metres at surface, including the El Sahuaro, El Prospecto, Santa Rosa, Del Monte, Tere, and El Manchuri Veins.
All technical disclosure for the Oso Negro Project has been reviewed by Mr. Stewart Harris, P.Geo., who is a Qualified Person, as such term is defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects. Mr. Harris is employed as Exploration Manager of the Company.
All technical disclosure for the La Lola Project has been reviewed by Mr. Stewart Harris, P.Geo., who is a Qualified Person, as such term is defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects. Mr. Harris is employed as Exploration Manager of the Company.
All technical disclosure for the Cumaro Project has been reviewed by Mr. Stewart Harris, P.Geo., who is a Qualified Person, as such term is defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects. Mr. Harris is employed as Exploration Manager of the Company.
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