The Company has completed a review of historical exploration data in the district, including airborne and ground electromagnetic surveying (“EM”) targeting conductive base metal mineralisation. Graphite is also strongly conductive and many explorers interpreted graphite as the likely cause of the identified anomalism.
Geophysics in the Corkwood area has defined a conductive anomaly over a 20 kilometre strike length, which correlates with surface graphite mineralisation recently discovered in the tenement). Surface rock samples collected from the geophysical anomaly area, include:
– Northern Area – up to 6.91% Total Graphitic Carbon (“TGC”); and
– Southern Area – up to 7.25% TGC.
Geophysics in the Keller area has also defined several conductive anomalies, including one over 5 kilometres in strike extent, coincident with several high-grade graphite occurrences.
Subsequent to the end of the quarter, The Company successfully completed a 320 line kilometre Versatile Time Domain Electromagnetic (VTEM) geophysical survey over the Corkwood Graphite project. The helicopter borne VTEM system is designed to identify conductive features in the bedrock, such as flake graphite mineralisation.
Preliminary VTEM survey data clearly defines robust and coherent conductive anomalies along a corridor extending for some 25 kilometre strike extent within the project tenements (preliminary survey data is displayed in Figure 3 in link below – the areas of high intensity and potential high grade graphite mineralisation are highlighted as purple).
The VTEM anomalies coincide with areas where graphite has been identified at surface, providing encouragement that all the survey anomalies relate to bedrock graphite mineralisation.
The principle anomalous area at Corkwood Central is 9 kilometres in strike length and is coincident with graphite mineralisation identified at surface which returned up to 20.2% TGC. Within this area six prospects have been outlined with the best combination of flake size, conductance, thickness and grade for a proposed drilling program.
The survey also identified a robust southern extension to the known mineralisation which totals over 8 kilometres in strike extent and is totally untested by any exploration to date.
Final survey data is anticipated to be received in early November.
Download the full report here: SAYONA MINING SEPTEMBER 2015 QUARTERLY REPORT