Evolving Gold stakes 166 claims near Lithium Lakes
EVOLVING GOLD IDENTIFIES 24 CIRCULAR KIMBERLITE EXPLORATION TARGETS, ADDS 166 CLAIMS TOTALING 88.26 KM2 TO ITS LAND POSITION
Evolving Gold Corp. has increased its land position by staking 166 new claims for a total of 88.26 square kilometres in the vicinity of the Lithium Lakes property. The newly acquired claims have been named the Toro property by the company. The recent discovery of a circular high-magnetic anomaly coincident with a topographic low on the Lithium Lakes property has expanded the company’s focus to include diamond exploration (see news release dated Sept. 8, 2016). The new claims cover other magnetic anomalies of circular shape and of significant size that may be related to kimberlite pipes (it is important to note that other geological structures could also generate similar magnetic anomalies, and field validation has yet to be conducted).
The new targets are located in the La Grande and Opinaca geological subprovinces identified as the eastern extension of the North Caribou terrain, which hosts the Victor diamond mine operated by De Beers Canada (Victor is hosted in a kimberlite pipe belonging to an 18-pipe swarm, of which 16 are diamondiferous). Janse (1994) has demonstrated that the worldwide distribution of diamondiferous kimberlite is located in the oldest part of Archean cratons, where the thick continental crust extends below the graphite-diamond stability boundary. The mantle-derived diamonds may then be transported by kimberlite magma during extremely high-velocity eruptions to the surface. Using the high S-wave velocity (laterally and vertically), a 3-D tomographic model of the craton’s thickness can be built. Stephane Faure et al. (2011) have used the average velocity perturbations beneath the Archean North American cratons to define an envelope that is believed to represent the depth of the highly depleted subcontinental lithospheric mantle. Geostructural analysis by Mr. Faure et al. (2003) has indicated that deep-rooted linear features cross the property in a northwest-southeast trend and could be related to ancient faults that were permissive for the transport of kimberlite magma to the surface.
The magnetic signature of most kimberlite pipes of the Canadian Shield is, at high-magnetic latitudes, a circular positive anomaly (Keating and Sailhac, 2004). The newly staked targets all cover large amplitude magnetic anomalies of circular to subcircular shapes. In glacial terrain, kimberlites are expected to generate locally negative topographic reliefs because of their relative softness compared with the surrounding host rocks.
Furthermore, some of the acquired targets, based on their Keating anomalies, were already defined by Isabelle D’Amours (2011) as kimberlite exploration targets, as part of a research program conducted by Geology Quebec, a division of the Ministry of Energy and Natural Resources. Keating anomalies are defined by comparing observed aerial magnetic geophysical signals with models of the magnetic response generated by infinite vertical pipes of known radius. The comparison yields a ratio, expressed as a percentage, between the observed magnetic anomaly and an anomaly that would be produced by a vertical pipe such as a kimberlite. Values greater than 90 per cent were defined as kimberlite exploration targets by D’Amours.
Six key factors for kimberlite exploration (age of craton, magnetic high, topographic low, target shape, relationship with deep linear features and Keating score) were used to select the Toro anomalies, making them significant targets for diamond exploration. The company intends to perform a full desktop geophysical review of the different targets before proceeding with field exploration, which includes indicator tracing from till samples collected with the assistance of a helicopter. The attached table provides descriptions of the newly staked targets.
Detailed maps showing the magnetic signature and topographic setting for each of the Toro targets can be found on the company’s website.
CHARACTERISTICS OF THE TORO KIMBERLITE EXPLORATION TARGETS
Target Topography Magnetic Length Shape Keating
gradient (m) anomaly
(%)
Toro 1 (mentioned in NR dated Sept. 8, 2016) Low High 1,200 Subcircular N/A
Toro 2 High High 900 Subcircular 90%
Toro 3 Low High 900 Circular 90%
Toro 4 High High 900 Circular 95%
Toro 5 Flat High 900 Circular 90%
Toro 6 Flat High 900 Circular 90%
Toro 7 Low High 900 Subcircular N/A
Toro 8 Flat High 1,000 Subcircular N/A
Toro 9 Flat High 1,100 Subcircular N/A
Toro 10 Flat High 700 Circular N/A
Toro 11 Flat High 800 Circular N/A
Toro 12 Low High 1,200 Circular 90%
Toro 13 High High 900 Circular 90%
Toro 14 Flat High 800 Circular 93%
Toro 15 Flat High 800 Subcircular 90%
Toro 16 Flat High 700 Circular 93%
Toro 17 Low High 900 Circular 90%
Toro 18 Low High 750 Circular 90%
Toro 19 Low High 800 Circular 90%
Toro 20 Flat High 1,000 Circular 95%
Toro 21 Low High 750 Circular 93%
Toro 22 Flat High 800 Subcircular 90%
Toro 23 Low High 700 Subcircular 93%
Toro 24 Low High 800 Circular 90%
Evolving Gold’s chief executive officer, Bruce Duncan, stated: “The identification of a possible kimberlite target on the Lithium Lakes property led us to review regional geophysical and geostructural data, seeking similar anomalies in the vicinity of the Lithium Lakes property. This analysis allowed us to identify and stake a number of additional anomalies with the same circular magnetic signature in a region of Quebec previously unexplored for diamonds. We will immediately begin the planning of a fieldwork program, which will allow us to prioritize our future exploration activities on the Toro targets.”
Qualified person
Jean-Philippe Paiement, PGeo, MSc, of SGS Canada Inc., is an independent qualified person as defined by National Instrument 43-101 guidelines, and has reviewed and approved the geological information provided in this news release.
About Evolving Gold Corp.
Evolving Gold is exploring the 72.5-square-kilometre Lithium Lakes property in Quebec, located about 10 kilometres north of the Route du Nord and between eight and 30 kilometres from Nemaska Lithium’s Whabouchi project. The company is also exploring the 88.3-square-kilometre Toro property in the vicinity of the Lithium Lakes property.
http://www.evolvinggold.com/s/NewsReleases.asp?DateRange=2016/01/01…2016/12/31
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