Geology, Geochemistry, Targeting

Mineral exploration is a risky business and only a small number of projects ever make it through to production. Thus, a proper geological appraisal is paramount given the large potential risks involved. The primary tools for Identifying and ranking mineral exploration targets are geochemistry, geology, and geophysics. The objective of each exploration tool is then to provide specific discovery information upon which meaningful exploration decisions can be made, at minimum cost.

Geology

Geological models are the foundation of any exploration program or mine plan. Effective mineral exploration requires an in-depth understanding of the lithological and structural controls of mineralization. Mapping is a cost-effective exploration tool and a project-generative process that delivers tangible benefits to all exploration programs. A good geological map not only provides focus to an exploration program, it also clearly communicates the economic potential of a project to stakeholders.

The GeoGRAFX team has experience in mapping and the utilization of drilling information in a variety of commodities and geological settings. Using our knowledge of regional to mine-scale mapping, allows us to generate high-quality products in a time-efficient manner.

geochemistry

Geochemistry is an essential component in most modern integrated mineral exploration programs. Advances in the field include progressive improvements in mineral deposit models, conceptual models, ICP-ES and ICP-MS instrumentation and capabilities, and computer-based data analysis and visualization techniques. The current trend is to move from threshold determination to pattern recognition analysis to identify anomalous situations.

In the 1980s, GeoGRAFX pioneered the application of using multivariate analysis on geochemical data. These techniques have been improved with multi-element geochemical suites, updated software tools, as well as advanced classification procedures which allows a more in-depth interpretation for targeting, alteration modelling, or lithological classification.

 

 

targeting

Development of greater analytical capability with geographic information systems (GIS) to permit fuller assessment of all geoscience data. Objects and attributes in data sets can now be queried to quickly find all Ag deposits within 5km of northwest trending faults in a favorable horizon.

Spatial modeling techniques, including weights of evidence, logistic regression, and fuzzy logic, have been used for a mineral prospectivity analysis to test the utility of these methods in a target scale gold exploration. The classic case study is by the USGS for Carlin-type deposits in Central Nevada.  GeoGRAFX has been able to duplicate those results and successfully apply the techniques for clients to other areas in the southwest.

Related Projects

Van Deemen Au Project, AZ

The Van Deemen property is located in the Black Mountains, one of the most productive gold mining areas in Arizona. The deposit is a breccia-hosted gold deposit controlled by a detachment fault separating Tertiary age volcanic rocks from Precambrian granite.

Lisbon Valley Cu Mine Site, UT

Lisbon Valley Mining Company engages in mining copper in Lisbon Valley, Utah. Copper concentrations occur mostly as intergranular disseminations in sandstones and pebble conglomerates.

Kerrs Au Project, Ontario

The Kerrs gold property is situated in the Abitibi area of the Canadian Shield East of Timmins/Matheson Ontario. The quartz-carbonate breccia deposit is stratabound occurring at the contact of a thick, mafic pillow flow sequence overlying an ultramafic, magnetite-rich flow sequence.

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