The Northern Arizona Uranium Project, LLC. Uranium Breccia Pipe Mining. http://www.northern-arizona-uranium-project.com. The NAU Project, LLC. The Makapuu Claims. Three claims covering a breccia pipe located with a CSAMT survey
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Uranium Breccia Pipe Mining
The Makapuu Claims. Three claims covering a breccia pipe located with a CSAMT survey
and a comparative Geochemistry Survey. There are two instances of uranium mineralization
at the surface along with goethite psuedomorphs after pyrites and other goethite forms.
The mining claims located by the NAU Project, LLC are near the Southern boundary of the Kaibab National Forest in the Tusayan Ranger District south of Anita Road and west of Highway 64. The breccia pipe targets were located by using satellite imagery and then following up with field visits to examine the topography and for any evident mineralization.
A Geochemical Comparative Survey was performed on the Makapuu claims and positive results indicating a mineralized pipe were followed up with a Controlled Source Audio-Magnetotelluric (CSAMT) survey that mapped out the location of the pipe. A Soil Gas Hydrocarbon (SGH) soil survey and analysis was performed to determine if there was a Uranium ore deposit. The SGH analysis was very positive for uranium and located the deposit in the same location that the CSAMT survey indicated that the breccia pipe was located.
A CSAMT survey was also done on the Aiea claim and it is believed that the line of stations cut through the side of the upper(wider) part of the pipe and that further CSAMT work will need to be done to verify a pipe at the Aiea target. If a pipe is confirmed, follow-up geochemical analysis will need to be done to find out if a mineralized pipe is likely.
The Aiea claim. There is CSAMT work that suggest that a breccia pipe exists
at the center of the inwardly sloping area surrounding the small central basin.
Goethite pseudomorph after pyrites can be found in the drainage and basin area.
of a Mineralized Breccia Pipe
A geochemical survey of a breccia pipe target
compares the concentrations of elements inside
the target area to concentrations outside the
target area. The samples assayed are from the
soil, 4 to 8 inches below the surface.
To start the comparison the “mean”
concentration value for all the samples - both
target and background- are determined for each
element of interest.
An enrichment correlation value is found by the
following formula as put forth by the USGS:
CV =(# of Target Val > Mean) - (# of Bckgrnd Val > Mean)
# of Target Values # of Backgrnd Values
The USGS determined that a correlation value
greater than or equal to 0.2 meant that an
element was enriched. Less than or equal to
-0.2 meant that the element was depleted.
In between these two values and the correlation
The Makapuu breccia pipe target circled
in red. The green pins are the background
There are nine primary elements and four secondary elements that are the best indicators for
evidence of a mineralized breccia pipe. The primary elements are Uranium, Molybdenum,
Lead, Zinc, Copper,Silver, Nickel, Cobalt, and Arsenic. The secondary elements are Vanadium,
Chromium, Iron, and Lithium.
The Makapuu target is enriched in 7 of the 9 primary elements.
Some of the background samples near the Makapuu breccia pipe target may be on the metallic
halos of other nearby breccia pipes. Samples were taken east of the road as shown, in an area
free of breccia pipe morphology. These samples may be considered to be a truer background.
The correlation values increase dramatically. Eight of nine primary indicator elements are
enriched and two of the secondary elements are enriched.