The following photos are of the drill core from the 2010 drilling of Hole 10 on the Iron Range Project. Click on any of these thumbnails for a high resolution photo.
From 3.67m to 18.68m
- Start of Hole
From 18.68m to 34.49m
From 34.49m to 49.12m
From 49.12m to 64.67m
From 64.67m to 81.11m
From 81.11m to 96.15m
From 96.15m to 111.53m
From 111.53m to 127.75m
From 127.75m to 144.30m
From 144.30m to 160.93m
From 160.93m to 177.09m
2010 Exploration
The Clue
In September, a 2 hole diamond drilling program was initiated and designed to test a potential SEDEX target. It was Hole #2 that intersected a significant interval located at or near the Sullivan time horizon containing pervasive tourmaline and albite-altered sediments interlayered with discrete conformable bands of pyrite, pyrrhotite (iron) and chalcopyrite (copper) sulphides. Though relatively narrow (up to 8mm in width), these bands and the associated alteration assemblage are interpreted to be indicative of a vent system nearby which may contain more significant mineralized material. This very encouraging intercept in hole #2 resulted in a decision to accelerate further exploration of the
stratigraphic interval known to host the Sullivan deposit, drilling resumed and the project area was increased from 200 to 560 square kilometers.
Mineralization Encountered
Encouragement was encountered in Hole IR10-05, located approximately 1.2km from IR10-02. Hole IR10-05 encountered wide, intermittent intervals from surface to a depth of 278m containing breccia textures and intensive silica and albite alteration. Associated sulphide mineralization includes iron sulfides and arsenopyrite (a mineral often associated with gold). Intervals 148.0m to 163.0m (15.0m) and 270.0m to 278.0m (8.0m) were particularly enriched with lead-zinc sulphide mineralization
This mineralization, though not layered as is seen in the Sullivan deposit, is interpreted by Eagle Plains geologists to potentially represent remobilized material from a yet-undiscovered primary source. Rocks in the area both on surface and in drill-core are extensively albite-altered, which is consistent with the alteration assemblage located proximal to the Sullivan deposit.
Hole IR10-07 returned similarly altered and mineralized material from 142.0m to 155.0m.
The Potential Discovery Hole
Hole IR10-10 hosted the most intensely-altered and mineralized material, with semi-massive to massive sulphide mineralization including galena (lead) and sphalerite (zinc) reported over two intervals from 191.0m to 202.0m and from 276.0m to 279.0m. The lower massive sulphide interval is overlain by a 55m zone of disseminated to net-textured mineralization within intensely altered rock. The base of the lowermost massive sulphide appears to be truncated by a fault. Significant in the lower interval was the location of the massive sulphide mineralization, which is interpreted to be at or near the Lower-Middle Aldridge contact, the stratigraphic horizon which hosts the Sullivan deposit.
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