Firering Strategic Minerals: From explorer to producer. Watch the video here.
London South East prides itself on its community spirit, and in order to keep the chat section problem free, we ask all members to follow these simple rules. In these rules, we refer to ourselves as "we", "us", "our". The user of the website is referred to as "you" and "your".
By posting on our share chat boards you are agreeing to the following:
The IP address of all posts is recorded to aid in enforcing these conditions. As a user you agree to any information you have entered being stored in a database. You agree that we have the right to remove, edit, move or close any topic or board at any time should we see fit. You agree that we have the right to remove any post without notice. You agree that we have the right to suspend your account without notice.
Please note some users may not behave properly and may post content that is misleading, untrue or offensive.
It is not possible for us to fully monitor all content all of the time but where we have actually received notice of any content that is potentially misleading, untrue, offensive, unlawful, infringes third party rights or is potentially in breach of these terms and conditions, then we will review such content, decide whether to remove it from this website and act accordingly.
Premium Members are members that have a premium subscription with London South East. You can subscribe here.
London South East does not endorse such members, and posts should not be construed as advice and represent the opinions of the authors, not those of London South East Ltd, or its affiliates.
Apparently Centamin did not complete the first aeromagnetic survey in Egypt's Eastern Desert. The first took place in 1983 by the Aero Service Division at the Western Geophysical Company of America for the Egyptian Geophysical Survey.
And a brand new interpretation of these old surveys are hot off the press:
Received: 9 August 2022 Accepted: 7 September 2022 Published: 9 September 2022
And the map data can be viewed here:
https://www.mdpi.com/2076-3417/12/18/9078/pdf
Some excerpts:
'As can be seen, the study region contains many locations for porphyry mineral deposits, which are almost concentrated in the Barramiya gold mine area in the western part of the region, as well as large deposits delineated on the Barramiya Umm-Salatit belt in the northeast of the study region and extending in the NE–SW direction. However, the western part of the study area, which is represented by Abu Marwa and Abu Mireiwah, covers a large amount of porphyry deposits.'
'Our results for these two alteration zones are consistent with findings (on the ground gold sample collection fieldwork studies) by [28] (see footnotes in study.) They integrated fieldwork and satellite datasets with geochemical and mineralogical data to investigate new* gold discoveries in two alteration zones in the northeast (zone 1) and southeast (zone 2) in the ultramafic–mafic successions of the Barramiya gold mine'
------------------------------------->>>>
The Bottom Line: These new* gold discoveries discussed above are part of Centamin's newly awarded 'Nugrus' block concession ( Barramiya is about 100km west of Sukari) So this is very good news - and likely means Centamin won't need to do its own airborne survey (right away at least) to pinpoint prospective Sukari-sized porphyry drill targets. Booyah!
Cowichan
CEY completed an airborne TEM survey (VTEM), the first in Egypt
regards
the gnome
Gnome,
True, Centamin recently completed its own geomagnetic survey over the Sukari tenement BUT the very 1st geomagnetic airborne survey over the entire Eastern desert of Egypt was actually done in 1983 - 1986 by an American company (it took three years to complete.) The data was recently converted into a computer usable format and reinterpreted using the following software/techniques:
1) Regional–Residual Separation
The spectral analysis technique is used to isolate the regional and residual components
from the RTP map (Radial Average Power Spectrum Technique).
2) First Vertical Derivative (FVD) Method
The FVD map is critical for detecting near-surface magnetic characteristics associated
with geological formations; it resembles the upward continuation map and is used to
enhance local anomalies, while attenuating regional anomalies because it is sensitive to
shallow magnetic sources.
3) Total Horizontal Gradient (THG) Method
The THG method is extremely good at detecting structures such as faults from the
borders of anomalies [23], and it is generally insensitive to data noise and interference
effects between close sources. This method is widely used in mineral exploration; however, it is lease susceptible to data noise because it only considers the two first-order horizontal derivatives of the magnetic field.
4) Tilted Derivative (TDR) Method
The TDR is employed in this search for mineral exploration targets and mapping
shallow basement structures using Oasis Montag (8.4); however, it is not usable in deep
sources, since the observed edges have vanished.
5) Analytical Signal (AS) Technique
One of the most essential features of the AS technique for deriving magnetic parameters from the aeromagnetic data is that it is independent of rock magnetization. The AS
amplitude can be used to map the borders of rock units and delineate underlying structural
features.
6) CET Porphyry Analysis
This technique is used in our research to explore porphyry mineral deposits across the
area using the RTP grid, and it involves several processing stages, including the Circular
Feature Transform plugin, the Central Peak Detection plugin, the Amplitude Contrast
Transform plugin, and the Boundary Tracing plugin
A summary of the study states: We have analyzed the aeromagnetic data to delineate the
alteration zones, geological structures, geological boundaries, and depth to the rock of
conceivable basement mineralization zones that are linked to hydrothermally altered zones.
The study area has been subjected to previous geophysical studies, including paleomagnetic studies on some chromite ores [9] and others using aeromagnetic data to create the
curie point depth map by means of the spectral analysis technique [10], but it is the first
time that the aeromagnetic data has been analysed using the new Centre for Exploration
Targeting (CET) grid analysis technique to map out geological structures and highlight
the best pl
Thanks Cowichan
There is a big difference between aeromegnetic and electromagnetic surveys.
Magnetic measures magnetic properties.
Eletromagnetic measures conductivity properties.
Not the same.
However in an electromagnetic survey you do measure magnetic properties as well
thanks
the gnome