VANCOUVER, BRITISH COLUMBIA -- (Marketwired) -- 04/23/13 -- Expedition Mining Inc. (TSX VENTURE: EXU) (the "Company") is pleased to provide this update on their four properties within the Walker Lane Mineral Belt, Nevada. These properties are Long Canyon, Black Hills and Jenny Hill, all located in Mineral County and Slate Mountain located in Churchill County.
LONG CANYON PROPERTY
This property is located 200 kms southeast of Reno and 16 kms southeast of the historic mining community of Mina, Nevada. Rock sampling has returned gold values up to 1.7 g/t over 3 m chip samples and up to 9.7 g/t gold and 529 g/t silver in grab samples. The property hosts an extensive siliceous zone containing strongly anomalous mercury (to 155,000 ppm), antimony (to 987 ppm) and arsenic (to 2790 ppm) values. The exploration target on the Long Canyon project is high grade, structurally controlled, precious metal mineralization. Long Canyon has never been drill tested.
Work carried out by Expedition has identified several structural trends associated with multi-element soil anomalies, and surface gold assays to 9.7 g/t. These structural zones trend dominantly north-northeast and northwest, and intersect beneath the extensive siliceous zone which occupies the central portion of the property. This siliceous cap contains generally low gold values, and is believed to represent the uppermost level of the hydrothermal system, indicating that the entire system may be present. The gold bearing veins are only exposed at lower stratigraphic levels which occur in the drainages.
Geophysical surveys carried out by previous operators have identified northeasterly trending chargeability anomalies associated with the surface gold bearing zones. As expected, the siliceous cap manifests as a Resistivity High overlying the chargeability anomaly. The northwesterly trending zone of veining identified during the mapping and soil sampling program of 2012/2013 correlates very well with a northwest chargeability and resistivity anomaly across the southern portion of the property. This trend correlates with the overall orientation of the Walker Lane and may represent dykes associated with the volcanic sequences in the area. A magnetic survey carried out in 2007 also shows a strong Magnetic High underlying the northeasterly trending silicified zone.
The north-northeast trend is characterized by swarms of narrow quartz veins with a general northerly orientation and sub-vertical dip. These veins range from less than 1 cm to greater than 1 m in thickness. At least two of these NNE zones have been identified to date, which can be up to 250 m wide. Veins within the NW trending zone show a greater variation in dip attitude from -45 to vertical, and are generally oriented sub-parallel to the overall Walker Lane Belt. The vein widths within the northwest trend are similar to those in the NNE set.
Structurally the Long Canyon project area is dominated by strands of the northwest trending Walker Lane Fault Zone. Walker Lane structures, and arcuate splays from the main faults, trend across the property and are exposed in many of the drainages. The northerly trending structures extend through the Pilot Mountains to the north, and are covered by pediment fans to the south. The intersections of these structural zones are believed to be important localizing features for the mineralization encountered at the nearby Belleville Mine and the deposits of the Douglas Camp to the west.
Most Popular Stories
- NSA Defends Global Cellphone Tracking Legality
- Top Websites for U.S. Hispanics
- Ad Counts Rise in 2013 for Hispanic Magazines
- Networks Vie for U.S. Hispanic TV Viewers
- Saab Gets Back into the Game; U.S. Auto Sales Soar
- Apple Activates Customer-Tracking iBeacon
- A Biography of Jonathan Ive, Apple's Creative Chief
- Dell Offers Undisclosed Number of Employee Buyouts
- 2013 Tech Gift Guide: iPad Mini Still Hot; Chromecast a Great Low-Cost Option
- Apple Wants Samsung to Pay $22M for Patent Dispute Legal Bills