Sienna Resources: High-grade Energy Metal Deposits in Politically Stable, Environmentally Responsible Mining Jurisdictions

Prospective for Lithium in Clayton Valley

This Sienna Resources profile is part of a paid investor education campaign.*

Sienna Resources (TSXV:SIE, OTC:SNNAF) is an exploration and development company targeting high-grade deposits in politically stable, environmentally responsible and ethical mining jurisdictions. The company owns a trio of properties with exposure to the emerging battery metals market, including the Slättberg Project in Sweden, the Clayton Valley lithium project in Nevada and the Marathon North palladium project in Ontario.

Sienna Resources company highlights:

  • Sienna Resources has acquired the 2,500 acre Marathon North palladium property in Northern Ontario directly bordering Generation Mining Ltd.’s (CSE:GENM) Marathon palladium project
  • Sienna Resources is currently formulating a 2020 Drill Program on its Flagship Slättberg Platinum-Palladium-Nickel Project in Sweden
  • During its 2019 Drill Program, Sienna Resources Intersected Significant Platinum/Palladium on its Flagship Slättberg Platinum-Palladium-Nickel Project in Sweden
  • Drill hole SIE-19-002 was drilled to test a strong EM response to the west of drill hole SIE-18-003 in the center of the trend of mineralization. Drill hole SIE-19-002 intersected a PGE rich vein 0.55 meters wide (from 88.0 m to 88.55 m), averaging 0.22% Ni, 1.79% Cu, and 4.15 ppm (4.15 g/t) PGE (4.05 g/t Pt vs 0.095 g/t Pd).  Taking recent metal prices and assuming 100 percent recovery the hole returned 4.66g/t PdEq, 9.03g/t PtEq, 4.44% CuEq, and 1.72% NiEq.
  • Sienna is Partnered with an NYSE Listed Mining Company on the Flagship Slättberg Platinum-Palladium-Nickel Project in Sweden which contains 16 historic mines on the property
  • Drill hole SIE-19-001 intersected bodies of semi-massive to massive sulfide mineralization and breccias over a 4.625-meter interval from 168-172.625 meters, with additional masses of sulfide mineralization and breccia that persisted to a depth of 195 meters1.
  • The sulfide mineralization intersected in 19-001 was also associated with and hosted by a swarm of diabase (mafic) dikes, which persisted to the end of the hole at 259.5 meters. The density and thickness of the mafic dikes seen in 19-001 are far greater than seen in other drill holes in the area and in surface exposures.
  • The presence of visible sulfide mineralization distributed over a 27-meter interval in the drill hole2 and the intensity of the dike swarm may suggest that Sienna is tapping into a “feeder zone” for the system

[1] True width estimated at 55 – 65 percent of interval
[2] True width unknown, estimated at 55 – 60 percent of interval

Slättberg platinum-palladium-nickel project

Slättberg is located 25 kilometers northwest of Falun, Sweden. Slättberg is a historic mining camp hosting platinum-palladium-nickel-copper-cobalt rich massive sulfide mineralization that occurs within a two-kilometer belt of historic nickel-copper mines. The project contains drill defined massive sulfide mineralization that extends to around 100 meters in depth, and remains open for expansion at depth and along strike. The project is accessible year-round, with nearby rail, power and five smelters in the Nordic region.  At least 16 historic mines are located on the property, with historic operations dating back to the late 1800s.

Mineralization at Slättberg is hosted by 1.8-1.9 Ga (Svecofennian) supracrustal rocks (metavolcanics and metasediments) located along the southwestern flank of a large gabbroic intrusive complex. The historic mines are positioned along an east-west trend of massive sulfide occurrences developed in and around a similarly oriented body of “leptite”. This is a local term used to describe rhyolitic/felsic tuffaceous rocks commonly associated with sulfide mineralization in Bergslagen. Mafic and ultramafic rocks also occur in and around the mine workings.

Sweden is at the forefront of an exploration and development boom in the mining industry. The country’s favorable business environment includes a low corporate income tax rate, a proactive geological survey, and broad public support for export-led resource extraction. Sweden has a long history of mining and is host to some of Europe’s largest active mines.

Northvolt is planning to be the largest battery factory in Europe at roughly the same size as Tesla’s Gigafactory. Sienna President, Jason Gigliotti, states “Northvolt wants to locally source as much battery material as possible such as cobalt and nickel. There are now more than 20 mega battery factories currently being planned or constructed globally, creating a massive demand on battery metals such as lithium, cobalt and nickel. Sienna is focused on exploring and developing projects that will meet this insatiable demand.”

Jason Gigliotti president of Sienna states, “We are very pleased to have the opportunity to have access to this project which lies within one of the top mining jurisdictions in the world with significant mining history. The infrastructure is as good as any drill target I have seen. There are paved roads within meters of planned drill targets and this prospect is accessible year-round. This platinum-palladium-nickel prospect houses 16 historic mines and we are optimistic about what new mining techniques could achieve. The results of the 2019 drill program were very encouraging as we intersected significant platinum & palladium. A follow-up drill program is currently being formulated and we look forward to a very active 2020.”

Sienna conducted a two-hole drill program in October 2019 at its Slättberg project in southern Sweden. That program targeted two electromagnetic (“EM”) anomalies detected by downhole surveys performed at the end of the 2018 drill program. One was detected in the vicinity of drill hole SIE-18-006 located at the west end of the trend of historic nickel mines, and one in the vicinity of drill hole SIE-18-003, near the center of the trend of mineralization.

Drill hole SIE-19-002 was drilled to test a strong EM response to the west of drill hole SIE-18-003 in the center of the trend of mineralization. Drill hole SIE-19-002 intersected a PGE-rich vein 0.55 meters wide (from 88.0 m to 88.55 m), averaging 0.22 percent nickel, 1.79 percent copper, and 4.15 ppm (4.15 g/t) PGE (4.05 g/t platinum vs 0.095 g/t palladium). Taking recent metal prices and assuming 100 percent recovery, the hole returned 4.66g/t palladium equivalent, 9.03g/t platinum equivalent, 4.44 percent copper equivalent, and 1.72 percent nickel equivalent. The unusual enrichment of PGE in this vein is notable and represents one of the highest values ever reported from the property. PGE contents seen in Sienna’s 2019 drill holes demonstrate strong PGE potential on the project. Drill hole SIE-19-002 also intersected unmapped mine workings at a depth of 70 meters. This demonstrates that nickel mineralization was mined at a larger scale than was indicated by historic records.

Drill hole SIE-19-001 was drilled to test the western anomaly. Several zones of sulfide mineralization were intercepted in the hole over a 28-meter interval from depths of 167 to 195 meters. This represents the broadest zone of sulfide mineralization ever intersected on the property. Sulfide mineralization was present as massive sulfide veins and in breccias, and is associated with, an unusually thick swarm of mafic dikes. The best intercept from within the zone of sulfide mineralization was 5.0 meters (from 167.75 m to 172.75 m) averaging 0.57 percent nickel, 0.47 percent copper, 0.06 percent cobalt, and 0.48 ppm PGE*, or just over 1 percent nickel equivalent using current metal prices.

Textures in the sulfide intervals are suggestive of tectonic remobilization of sulfides from a nearby source. Multiple thick mafic dikes were also intercepted in SIE-19-001, which are not seen in surface exposures, nor in the shallow drill holes elsewhere in this area. The abundance of sulfide, higher PGE values, and a swarm of mafic dikes suggest that Sienna is moving closer to a source area for the sulfide mineralization and associated mafic intrusions as it drills to progressively deeper levels in the western target area.

[1] True width estimated at 55 – 65 percent of interval
[2] True width unknown, estimated at 55 – 60 percent of interval

Clayton Valley deep basin lithium brine project

Sienna Resource’s Clayton Valley lithium project is located in the mining-friendly jurisdiction of Nevada. The company’s land package is directly inside of and completely surrounded by Pure Energy Metals Ltd’s property. The project is located in one of the deepest sections of the lithium Clayton Valley, the only lithium brine basin with a producing operation in North America. Pure Energy Minerals, which owns the Clayton Valley South project, has recently released an inferred resource of 247,000 tons of lithium carbonate equivalent on the Clayton Valley South project.

According to Jadon Gigliotti, President of Sienna Resources, the property in Clayton Valley offers a unique opportunity for the company to target quality lithium reserves. “We are pleased to be one of the few companies that have property within the only known lithium brine basin with production in North America. Saline brines are higher density than fresh or brackish water and therefore tend to sink. Based on this, management is optimistic regarding this project as we are located in the deeper sections of this basin.”

Marathon North palladium property

The Marathon North palladium property is located in northern Ontario, directly bordering Generation Mining Ltd.’s Marathon palladium project. The 2,500-acre property contains one of the largest undeveloped platinum group metal mineral resources in North America hosting several PGM-copper deposits, including the 7.1 million ounce palladium-equivalent Marathon Deposit. “We are extremely pleased to be able to acquire a large block of land directly bordering one of the largest palladium deposits in North America. This is an excellent complement to our platinum-palladium-nickel project in Sweden,” said Sienna President Jason Gigliotti.


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