Roulette, Blackjack, Minnesota (Cu, Cu-Fe)

Summary

Roulette, Blackjack and Minnesota are exploration targets located within the Ann Mason project, Nevada.  For access to the general project and ownership information, click here for the Ann Mason Project page.

Roulette (Cu)

The Roulette target is located approximately 3 km southwest of the Ann Mason deposit and is primarily defined by a large positive aeromagnetic anomaly.

Drilling in 2010 resulted in the discovery of a new concealed mineralized porphyry copper system located near the southwest margin of the Yerington batholith. Out of four holes, only one reached the target depth. Hole EG-R-10-003 intersected 20.7 m averaging 0.14% Cu from a depth of 497.3 m.  Mineralization occurs as chalcopyrite-pyrite in strongly altered granodiorite cut by quartz-K-feldspar and quartz-chlorite veins. This new copper occurrence is interpreted as representative of a separate porphyry system located near the southwest margin of the Yerington batholith. Disseminated magnetite, associate with K-feldspar alteration is interpreted to be the cause of the strong magnetic anomaly. Mineralization and the source of magnetic high is interpreted to be in the footwall of the Blue Hill fault. Additional mineralized zones may be present in the hanging wall of the Blue Hill Fault to the southeast of EG-R-10-003.

The Roulette target requires additional drilling in order to adequately evaluate the potential for either porphyry copper or high-grade copper skarn deposits.  In 2010, 1,055 metres of drilling was carried out at Roulette.  In March 2012, hole EG-R-10-005 (pre-collared in 2010) was deepened.  Results are pending.

Blackjack (Cu)

The Blackjack targets are defined by two geophysical IP anomalies located in a largely overburden-covered area in the northern half of the Ann Mason project (see map).  One hole, drilled in 2010 was collared in close proximity to the northeast anomaly and intersected 0.44% Cu over 4m (from 444 m depth).  The second Blackjack target has not been drilled.

The Blackjack targets require surface mapping and sampling and further analysis of geophysical data to help in prioritizing drilling plans.

Minnesota (Cu-Fe)

The Minnesota target is located in the northwest corner of the Ann Mason project area and is adjacent to the historical Minnesota iron mine, a Cu-Fe skarn deposit, which produced high-grade magnetite ore in the 1950’s and 1960’s. The deposit was originally worked as an underground copper mine, with minor copper production during World War I.

Exploration programs on the Minnesota target were carried out in 2007 and 2008 by previous owner PacMag. A magnetic anomaly was outlined and two discrete chargeability anomalies with locally coincident conductive zones on the western flank of the magnetic anomaly were identified. This geophysical work was followed by a three-hole RC drilling program, totalling 560 metres. The holes encountered considerable pyrite, but no significant copper or iron-oxide mineralization. Reinterpretation of the geophysics suggests the magnetic anomaly is deeper than previously believed and that deeper drilling is required.

Link to Technical Report

March 2012 - Technical Report and Updated Mineral Resource Estimate on the Ann Mason Project

Last Updated:  May 2012