Sturgeon Falls Sill Project
Overview
- Located in northern Menominee County Michigan, USA
- Approximately 19 miles north of Back Forty Project
- Host ultramafic rock with favorable chemistry to host nickel/copper sulfides
- Recently completed 1,470-line kilometer VTEM survey that identified multiple drill targets
- Ground geophysical exploration and drilling planned for late 2011
History
The Sturgeon Falls Sill is a large, underexplored ultramafic/mafic complex of probable early Proterozoic age located in northern Menominee County, approximately19 miles north of the Back Forty Project. During a diamond exploration program by Crystal Exploration, a single hole was drilled in 1995 and is the only known drill hole in the project area.
Geology
Crystal Exploration encountered high MgO ultramafic rocks with favorable chemistry for the potential to host Ni-Cu sulfides. Also, the last three feet of cuttings collected and sampled contained anomalous levels of Pt and Pd (0.2 ppm of both Pt and Pd). Aquila has conducted ground geophysical surveys, surface mapping and sampling, along with conducting a title search of major land owners, and has subsequently applied for 1,464 acres of state leases covering a portion of the complex.
Ground geophysical surveys revealed an extension of the sill to the east and traced the sill underneath the Paleozoic cover. Overall, the sill appears as a significant NW-SE trending gravity anomaly. An associated, similarly trending magnetic anomaly was also apparent, corresponding to the southern margin of the sill which is encouraging for the potential of sulfide accumulation.
A recent 1,830-line kilometer Geotech VTEM heliborne geophysical survey was flown over the gravity anomaly and surrounding area. The preliminary data is promising for potentially significant geophysical exploration targets, which may result in more ground geophysics and eventual drilling.
