Angel Hill - New Type of Gold TargetSubject: Ontario Government Geologists Recommend New Exploration Target Based on HLM’s Angel Hill Gold Zone
The significance of HLM's work inthe West Cedartree area is underscored by a recent government report. In the Ontario Geological Survey's 2005 Report on Activities (Open File report 6146) from the Kenora Mining District (Page 29), government geologists' only recommendation for future exploration in the district calls for targeting new areas based on a new geological model utilizing the geology and setting of Houston Lake's Angel Hill Gold Zone:
"RECOMMENDATIONS FOR EXPLORATION
Gold Mineralization within Mafic Intrusions (C. Ravnaas and A. Raoul)
The Angel Hill gold zone (AHGZ) is located in a large gabbro intrusion that is part of the extensive Kakagi Lake sills. Exploration efforts by Houston Lake Mining Inc. has been successful in identifying a gold mineralizing event that is unique for a mafic intrusive body.
The AHGZ is defined by "a zone of intense shearing and alteration. The gold zone lies at the contact between the ultramafic rocks and the gabbroic rocks of a large gabbro sill. The zone varies in width from 7 m to 20 m" (Houston Lake Mining Inc. press release, March 24, 2004). The strike length of the zone is presently 225 m. High grade gold mineralization is associated with silicified pods or lenses. recent sampling of the larger pods have returned up to 115 g/t Au (Houston Lake Mining Inc. Press release December 15, 2004).
The alteration has "mainly affected the upper portions of the ultramafic rocks in the footwall and also impinges on the hanging wall gabbro. Alteration consists of ubiquitous carbonatization accompanied by serpentinization, chloritization, fuchsitization and silicification" (Houston Lake Mining Inc. press release, March 24, 2004). Surface _expression of the gold zone is evident by extensive carbonate alteration. Mafic intrusive rocks adjacent to this zone have low evidence of alteration and contain low gold tenor. The unaltered wall rock has elevated magnetite content while the altered portions are devoid of magnetite.
The lithological contact of a mafic intrusion is historically the area examined for gold mineralization. The mineralizing event at the AHGZ is confined to a tabular zone at the boundary between mineralogical phases within the gabbro sill. Quartz veins and hydrothermal alteration localized along mineralogical boundaries between differentiated phases within interior parts of mafic intrusions should be examined for gold mineralization."
Steptoo.