Auxer
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Deposit Type

Orogenic Gold

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Strike Length

Mineralized structure is over 7 km long inside of our claim block. The main gold trend has rock chips over 2 g/t Au for a strike length of over 2 km.

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Depth Potential

Geologic modelling indicates the mineralized zone extends for at least 570 vertical meters.

The Auxer gold and silver project is an orogenic type project with significant gold and silver showing in both soil and rock chips. The land package is currently 148 federal mining claims which cover over 2,700 acres of forest service ground. This claim package is over 7 km long, and shows gold and silver mineralization along the entire strike length.

There is a historic area which saw production of a couple of hundred ounces of gold in the late 1970's and early 1980's which has been the focus of our exploration efforts so far. We have identified a gold anomaly in soils and rock chips that extends for over 2 km of strike length in this historic area. Silver values increase to the north along trend.

Our geologic mapping and sampling has revealed that the historic area is actually the top half of the mineralized structure which has been fault offset. The bottom portion (hanging wall) has never been identified before, but our sampling and geologic interpretation indicate vertical continuity of at least 1,800 feet.

Our objective with Auxer is twofold: drill a meaningful resource, and begin producing gold from the property on a small scale in the near future. 

Harry Auxer, for whom the project is named, and other parties staked the first in approximately 1903. The Auxer Gold Mining Company was organized in 1920, formed to consolidate and develop the property and by 1936 controlled all the claims, after which they amended them into a contiguous claim block.  

The first development work on the property was a 350-foot tunnel that was driven to develop the Minneapolis vein by Harry Auxer. The exact date of this work is unknown, but sometime between 1905 and 1915. Reports indicate that there were promising results near the portal, but not enough grade on the vein to justify continued development. 

After this an inclined shaft approximately 60 feet deep was sunk on the Boston vein, completed before 1915. This was the first discovery of significant gold mineralization on the property. The incline shaft has two drifts on the south side at approximately 30 and 60 feet, respectively. The shaft was deepened to approximately 80 feet by 1923. The primary shaft itself and both drifts encountered high grade gold mineralization, up to 100 grams per ton (g/t) gold, as well as thick intervals of continuous gold mineralization up to 9.2 g/t across 14 feet. This shaft was sunk on a quartz carbonate ore shoot, the primary development target, and the gold mineralization, hosted in the quartz carbonate pyrite, continued vertically to the bottom at 80 feet. This shaft was chronically flooded, limiting accessibility to a short window of about two weeks at the end of each summer. 

Sometime between 1915 and 1936 a crosscut tunnel was developed to access the Boston and Chicago veins from 200 ft below. This tunnel originates in a valley to the east of the main mineralized areas and runs for over 1000 ft crossing both the Chicago and Boston veins. 

By the time the Auxer Mining Company was able to consolidate the claims and settle the disputes between the various owners, the US government had begun enacting a series of laws that were detrimental to the gold mining industry. Beginning in 1933 with Executive Order 6102 the private ownership of gold was banned. This caused problems as gold miners had a limited time window from the time of production until the sale to the federal government before they would be outside the law. In 1942 the federal government banned all non-strategic metal mining due to the war effort. These two changes marked the end of any significant effort at the Auxer and was the death knell for most gold mining in the American west. Koch (1959) summarizes this devastating affect when he writes “Since World War II, gold mining has been unable to recover from the 1942 closure brought on by Government order. Oregon’s mines are not alone in this respect, and only a few gold mines in the United States have been able to reopen and continue operations.”

The 1950’s brought a continued effort by the Auxer Gold Mining Company to establish the Auxer into a mine. By 1958 the Wellington Creek Road, now the primary vehicle access to the property, had been built. It was reported that the company had shipped hand-sorted ore from the dump at the top of the shaft which had a head grade of 19.8 g/t Au to an unknown smelter. 

The project sat idle through the 1960’s and early 1970’s until Idora Silver Company leased it and began to do work in the mid-1970’s. They calculated and reported to their shareholders a “potential resource” of 14,000 ounces of gold (Laczay, 1974). Idora leased the property to Wellington Resources in 1976. 

Between 1976 and 1982 Wellington Resources successfully mined ore and shipped concentrate (Table 1). The lease was terminated first in 1983, then re-signed in 1984. Ultimately, the lease was terminated again in 1986 due to failure to pay the agreed upon royalty by secretly sending ore shipments to a second smelter (Trail BC), in addition to the agreed upon smelter at the Bunker Hill Mine (Appendix B). This cancellation of the lease along with a depressed gold price in the 1980’s marked the end of historic production at the Auxer. 

The property sat idle until the sometime prior to 1999 when all of the original claims were finally dropped, nearly 100 years after they had been staked. In 1999 Ashington Mining Company staked two claims over the historic area and sold them to Shoshone Silver Mining Company in 2003 for $22,500. These two claims were allowed to drop in 2015. 

In October of 2018 six new claims centered over the inclined shaft and covering most of the known mineralization were staked by the author. In May 2019 he staked an additional 16 claims, covering the entire known extents of the vein system. In December of 2019 Lighting Creek Resources Corporation was formed to develop the Auxer and has since acquired the original 20 claims and staked an additional 126, bringing the current land package to over 2,900 acres covered by 146 federal mining claims. 

Auxer is located along the southern extension of the Easter Cordilleran Orogenic Gold Belt (ECOGB), a linear geologic trend that runs through eastern British Columbia and contains significant gold mineralization. Similar to the Mother Lode trend in California, the ECOGB is defined by a series of regional scale faults that form the western front of the Rocky Mountains, running parallel with the mountain chain. The gold deposits are hosted along these major faults, in rocks that were metamorphosed during the mountain building event. 

The Clark Fork Mining District is dominated by the Hope Fault. The Hope Fault is a major regional structural break that has been active since the Precambrian and has a minimum of 12 mi of offset and 3.4 mi of throw (Anderson, 1947). This fault juxtaposes the basal Prichard formation on the north against shallower Middle Belt units to the south. These middle member units on the southern side of the fault host the majority of the base metal mineralization in the district, primarily in the Wallace and Striped Peak formations. 

To the north of the fault is the Prichard Formation, the basal unit of the western Belt Supergroup stratigraphy. The Prichard is primarily a turbidite unit that is observed to be as thick as 5.5 km in places (Harrison and Cressman, 1993), and contains abundant pyrite-pyrrhotitic argillite beds, black shales, and quartzites (Kleinkopf, 1997). In addition, the Prichard contains abundant mafic sills, comprising as much as 40% by volume of the stratigraphy is places. In both the Clark Fork and Silver Valley districts most of the gold mineralization is hosted on the north side of the respective regional fault where the basal Prichard and contained mafic sills have been exhumed. 

The Auxer gold project is located to the north of the Hope Fault, within the Auxer sill, a 2,000-3,000’ thick mafic sill that can be traced from the Hope Fault to the north into Canada. The sill intruded into ‘E’ member of the Prichard formation, a quartzite rich bed that is correlative with the Middle Prichard Quartzite that hosts the Golden Chest mine near Murray.  

Locally the sill is a quartz diorite body which appears to cut bedding by up to 20 degrees and is up 3,000 ft thick.  All of the structural trends at the project including the sill, bedding in the Prichard, and the Auxer fault strike generally 30° degrees north. This sill and Auxer fault and dip between 50° and 60° to the southeast, while the bedding in the Prichard dips closer to 40 degrees to the southeast. The Auxer fault cuts the Auxer sill nearly parallel and is defined by a series of shear zones which host the precious metal mineralization at the Auxer gold project. 

Mineralogy and Alteration

The sill is locally a quartz diorite body that has been subjected to greenschist facies metamorphism. The mineralogy consists of albite, primary hornblende which has been replaced by chlorite, quartz eyes, and magnetite.  Hydrothermal alteration is evident proximal to the shear zones and is defined by epidote, both granular and in veins, magnetite veins, and a general lightening in color of the matrix, and significant siderite.


Structural Setting

The primary gold mineralization at the Auxer gold project is hosted in shear zones contained within the quartz diorite sill. These shears range from 1 ft to over 25 ft wide and are defined by strong foliation and low-grade gold mineralization. The central zone of the larger shears (e.g. Boston) are comprised of mylonite. On the surface they can be traced discontinuously for over 1 mile, with many portions covered by soil, scree, or glacial till. The shear zones collectively represent the Auxer Fault, a second order structural break that formed due to shear stress.  The shears strike parallel with the Auxer sill and dip between 50 and 60 degrees to the southeast. 

As the orogen relaxed and the regional stress regime changed from compression to extension a series of normal faults broke to accommodate this extension. One of these normal faults cut the Auxer deposit, with a strike nearly parallel with the Auxer sill and fault but a dip approximately 30 degrees shallower. Currently the dip of this shallow normal fault is approximately 22 degrees to the southeast. 

Globally shear zones that host orogenic gold deposits commonly dip at approximately 60-70 degrees (Hpodgson, 1989), indicating that the Auxer shears are typical. 

The shallow normal fault moved the top several hundred meters of the Auxer system down and to the southeast, placing the top of the system, now the hangingwall, at a lower elevation than the exposed depths in the footwall. Using points with similar geometry and strength of mineralization in a set of veins to the north as pierce points, the relative offset of the normal fault appears to be approximately 0.7 mi in a south by southeast direction. When applying this offset from the compressor tunnel area of the historic workings, we end up directly over the area where two high grade rock chips were collected in 2020. 

Lamprophyre dikes are observed in multiple places in the underground workings (Platts, 1936), and are associated with copper mineralization

It is our strong desire to place Auxer into production in the near term. The Chicago Vein, which has seen very little historic exploration, is our immediate target for work. We have a Plan of Operations submitted with the Forest Service to execute a drill program that is designed to drill out a resource of 10,000 to 20,000 tons of ore. This summer (2024) our surface sampling exposed the vein further, and we now have over 270 feet of continuous quartz vein exposed with anomalous gold mineralization.
The following timeline lays out the ideal scenario that the Company would like to see happen. This timeline is dependent upon a variety of factors that must come together correctly including drill results, financing, permitting success, and potentially other factors that have not been identified. With that in mind, the company's plan for Auxer is as follows:

2025
Execute the drill plan and re-open the historic Auxer portal, gaining acess to the underground workings.
Fall 2025/Spring 2026
Develop and submit a Plan of Operations with the Forest Service to begin multi-year exploratory mining on the Chicago Vein, ideally targeting ~20 tons per day, hauling raw ore offsite to be processed on private land here in Idaho.
2026-2027
Operate underground on a Notice of Intent, rehabilitating old workings and driving a new access from the historic workings south along the Chicago Vein to prepare for production.
2027-2028
Depending on the permitting timeline of the Mining Plan of Operations, begin underground mining.  

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