TSX.V: LGR

Shell Creek Property

Project Highlights

Highly Prospective Area
Situated on the largest gravity anomaly in the Yukon.  Coincident IP and gravity anomalies further enhance the significance of an extensive copper-gold soil geochemical anomalies on the property.

Exploration Potential
The northwestern portion of the property is largely unexplored and underlain by a large magnetic high.

 

Location and Claim Ownership 


The Shell Creek Property is located roughly 75 km NW of Dawson City and consists of 586 claims totalling 13,611 hectares.  The property, which is situated on the largest gravity anomaly in the Yukon, lies along the edge of the Tintina fault within the Tintina Gold Province.  Logan owns 100% of the property subject to a 2% NSR.


click here to view the location map

 

2011 Exploration

The 2011 program consisted of the collection of 4,447 soil, 99 rock and 43 silt samples, in addition to geological mapping and reconnaissance scale prospecting.  The program was successful in identifying a number of copper, as well as lead-zinc anomalies, reinforcing the existing dataset for the property. All of the data collected to date are currently being reviewed in order to assess the next stage of exploration and, specifically, to determine if follow-up via diamond drilling is warranted.
click here to view the geology and
soil geochemistry map

 

Geology

The property is underlain by a mixture of clastic, carbonate and volcaniclastic rocks of Late Precambrian to Early Cambrian age. Within this package of rocks an extensive banded iron formation defines a southeast plunging antiform. Previous work has focused on several possible mineralization models including;

• saddle reef style gold mineralization
• IOCG
• red-bed copper
• Algoma style banded iron formation

The property hosts multiple gold and copper soil anomalies that are in some cases coincident. Numerous soil samples have returned >100 ppb gold.  These samples are typically located on or very near the location of the iron formation but commonly occur as single point anomalies on 250 m spaced soil lines. In several instances the point anomalies are successive for up to 4 lines (~1 km) along strike and parallel to the iron formation. The strongest copper in soil anomaly is coincident with the intersection of two structures interpreted from the aerogmagetic data.

Copper mineralization on the property has been described as disseminations, blebs and fractures filled with chalcocite hosted within a chloritic phyllite. Grades of up to 2% Cu have been reported from grab samples. The mineralization is reported to occur proximal to the iron formation and associated with disseminated magnetite and pyrite occurring peripherally to the copper mineralization. Visible gold and coarse grained tetrahedrite occurs in quartz vein float in several locations along the northern limb of the antiform and is the impetus for exploring for saddle reef style mineralization.

The northwestern portion of the property is largely unexplored and underlain by a large magnetic high.

Historical Exploration

2004: Logan conducted geological mapping, trenching, and soil, rock and stream sediment sampling. The stream sampling program indicated significant copper, gold and uranium anomalies in the drainage pattern. Five gold-bearing quartz saddle reef structures were outlined. 

2005: Logan completed a helicopter-borne magnetometer survey, a soil geochemical survey (1,054 samples), an IP survey and a gravity survey. The results concluded that drilling was warranted.

2006: A detailed soil geochemical survey (2,260 samples) completed over the northeastern portion of the property expanded the anomalous copper area to cover 13.4 km by 1.8 km (24 km²), with values up to 620 ppm Cu.  Gold in outcrop assayed up to 3.4 g/t Au coincident with higher copper soil geochemical results.  Three holes were drilled to test an IP target, however the target remains unexplained as the holes did not reach the target depths.

2007: Logan conducted airborne magnetic and radiometric surveys, 1,535m of diamond drilling in 10 holes, mapping, prospecting and additional soil sampling. The program revealed a new gold target, a 750m long hydrothermal vein breccia. Previously, five Au-Cu bearing saddle reef structures had been identified on the property over a 6km distance with visible gold observed in boulders (3.8 g/t to 9.3 g/t Au from quartz float and 2.7 g/t Au in soil). Five radiometric anomalies were identified, several of which have magnetic signatures, interpreted as representing sulfide mineralization. Anomalous potassium values cover a large area, which is consistent with a late stage IOCG model. A large magnetic anomaly to the north, which is interpreted to be an intrusive, along with a coincident radiometric anomaly, represents an untested new target. Drilling in 2007 was hampered by blocky ground. Deeper holes across the copper bearing phyllite, perpendicular to the regional structure, will be necessary to test the stratigraphy. Trenching is necessary to determine the orientation and structural complexity of the copper horizon prior to drilling.

2008: Exploration work consisted of sampling the area between the 2004 trench and the visible gold quartz boulder in the creek bed several hundred meters to the ENE of the trench.


Aeromagnetic Total Field Regional Gravity Map Soil Geochemistry Total Magnetic Intensity



Shell Creek Property Shell Creek Property Fault cutting through Shell Creek Prospecting the banded
iron formation




Adrian Bray, P.Geo., is a Director of Logan and a Qualified Person as defined by National Instrument 43-101 for the above mentioned project. The QP is a member in good standing of the Association of Professional Engineers and Geoscientists of British Columbia (APEGBC) as a registered Professional Geoscientist (P.Geo.). Mr. Bray has reviewed and is responsible for the technical information disclosed above.