Fenn Gap Iron-Manganese Project (Genesis 100%)
The Fenn Gap project is located approximately 25 kilometres
south west of Alice Springs in the Northern Territory. The project is close to
major infrastructure such as the Stuart Highway and the Alice Springs to
Adelaide Railway. The project comprises one granted Exploration Licence (EL
24839) which covers a total area of 98 km2.
Fenn Gap is prospective for iron and manganese. The known manganese
mineralisation at Fenn Gap occurs in the eastern part of the licence area where
previous rock-chip sampling has outlined a strata-bound dolomite-hosted
manganese-rich zone over several kilometres in length with manganese grades up
to 50.9% Mn (averaging 39% Mn). Geological mapping conducted by Genesis has
delineated over 9.9 kilometres of outcropping goethite (iron) mineralisation
(between 43% and 53% Fe) with moderate grade (33.2% Mn) manganese assays
obtained from the Table Prospect area.
Through geophysical consultation with Resource Potentials Pty Ltd in Western
Australia, they recommended that ground gravity survey based on 400m line
spacing and 50m stations across the lines would potential delineate the
extensive lodes for drill testing.
The survey was successful in defining broad scale gravity anomalies which can be
correlated in most instances to mapped outcrop and goethite/manganese
mineralisation. The residual filtering and modelling has highlighted local areas
of gravity anomalism which indicate areas of higher density, and it is
recommended these be followed up by a drilling campaign to suitably test these
areas.
The modelling showed that a source bodies with widths of 30-40m, 100m depth
extents and similar strike extents to the mapped mineralisation provided a good
correlation to the gravity anomaly. All model bodies had dips 70° to the south
and are located to the north of the gravity anomaly, which suggests that the
gravity response is due to a down dip component rather than the surface
mineralisation.
A review of the geology and potential for mineralisation corresponding to the
strong gravity anomalies in the north of the survey area should be undertaken to
determine if these are due a more silicified/dense stratigraphic unit of the
Bitter Springs Formation or if it may potentially represent mineralisation at
depth.
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Outcropping massive iron-manganese mineralisation striking
over 320m at the ‘Table Manganese Prospect’ |
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Massive outcropping iron mineralisation
over ‘Black Ridge Prospect’ area |
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