21 March 2022
Gold results uncover new Prospect at Mt Monger North
Highlights:
- RC drilling at the Hoffmann North prospect, Mt Monger North returns significant gold results, including;
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7m at 1.92 g/t from 52m; including
1m at 2.97 g/t from 54m
1m at 3.27 g/t from 57m
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7m at 1.92 g/t from 52m; including
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Only 1 RC hole was drilled for 100m with the program designed to follow up on vacuum drill assay results from MMG’s 2021 program which included:
o 1m @ 6.26 g/t from 39m - Follow up drilling is being planned to target the mineralized quartz veins which are open at both depth and along strike
- Planning is underway for a diamond drilling campaign at the Providence prospect where assays have returned results of up to 8m @ 31.84 g/t Au from 66m including 1m@ 190.08 g/t Au from 70m
Monger Gold Limited (ASX: MMG) (“MMG” or the “Company“) is pleased to announce the success of one recent RC drill hole that tested the Hoffmann North prospect. This drill hole is 200m NW of the Hoffmann Prospect and structures in the area are interpreted to strike in a NW direction which is antithetic to the Hoffmann Prospect that strikes NE.
Commenting on the drilling campaign, Monger Gold’s Chairman Mr Peretz Schapiro said “The discovery of the Hoffman North prospect, continues to bolster our portfolio of prospective targets across our tenements.
The drill results for this new area illustrate the potential for generating new prospects with significant gold mineralisation at Monger North. This first RC drill hole into the Hoffmann North Prospect requires more drilling to test the quartz vein gold in fresh rock where depletion of has not occurred.
In addition to following up the Hoffman North Prospect we are also looking forward to drilling some diamond holes at the Providence prospect as we seek to gain a greater structural understanding of the exceptionally high-grade gold system that appears to be present.
We look forward to keeping the market updated with our exploration progress across our projects”.
Hoffmann North comprises subvertical quartz veins in a felsic volcanic host rock with little transported cover but very deep weathering in an upper saprolite profile. A few very shallow old workings are found targeting quartz veins from surface, but potentially because of the deep weathering of the felsic volcanic host rock, gold was leached from the quartz veins.
An adjacent vacuum drill hole, to the northeast, has anomalous support of 1.39g/t Au at end- of-hole. Elevated arsenic with a NW strike in vacuum holes suggests an associated structure.
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Office: |
P: (08) 6245 2490 |
Directors: |
Exploration Manager: |
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602/566 St Kilda Road |
E: info@mongergold.com.au |
Peretz Schapiro |
Darren Allingham |
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Melbourne VIC 3004 |
W: www.mongergold.com.au |
Andrew Graham |
Company Secretary: |
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Romy Hersham |
Ian Pamensky |
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Other notable above background trace elements associations found from MMG vacuum drilling across the prospect are bismuth, molybdenum, tellurium and tungsten. The molybdenum associated with porphyry in the NW also has elevated chromium as is a mix of porphyry and ultramafic with fuchite alteration which is very prospective geology for gold mineralisation and therefore extensions along strike for this gold mineralisation.
The Hoffmann Prospect is around 3.5km NE from the Providence Prospect where diamond drill holes are currently being planned to intersect and characterise the significant high-grade gold mineralisation announced there from a recent RC drill program.
Figure 1: Plan of Hoffmann North illustrating RC hole 22HFRC001 location
Figure 2: Cross section of RC Drill hole 22HFRC001 with gold assay results
Local Geology
The Hoffmann North Prospect lies within the Monger Structural Domain which is an informal domain where rock contacts trend NNW-SSE, similar to the gold deposits 5km south in the Daisy Milano structural domain. The domain comprises an ultramafic unit in the east, overlain by a sedimentary sequence younging to the south interlayered with subordinate andesite and basalt. Mineralised quartz veins trend 055-060˚ at Hoffman Prospect but at Hoffmann North appear to strike towards the northwest.
Cohalan (2014) concluded;
NNW-structures, especially where they intersect the contact between two different facies should be the target of future exploration, as these contacts may have acted as fluid pathways or represent a favourable rheological contrast.”
Figure 3: Structural Domains and broad geological features of the Month Monger North Project
Regional Geology
The Mt Monger North tenement package is positioned within the Eastern Goldfields Province of the Archaean Norseman-Wiluna Greenstone Belt. The greenstone belt has been subdivided into a number of geological terrains which are separated by regional faults. The NNW trending Mt Monger Fault, just to the west of the tenement package, separates the Gindalbie and Bulong Domains in the east, from the Kalgoorlie Terrain towards the west.
Multiple deformation events in the Eastern Goldfields, with early north-south directed thrusting overprinted by east-northeast shortening has resulted in dominant north/northwest trending greenstone belts and granites separated by major north-northwest trending shear zones. The Mt Monger Fault represents one of these large domain shear boundaries that separate the Boorara and Bulong Domains. The Gindalbie Domain, east of the Mt Monger Fault, consists of a lower mafic to felsic volcanic sequence overlain by a thick ultramafic to mafic succession known as the Bulong Complex. The low angle Hampton Fault is regarded as the contact between the two sequences. Both sequences have been folded into a broad, north-south plunging anticline (D2) known as the Bulong Anticline. The Mount Monger North tenement package contains a segment of the western limb of the anticline and covers a greenstone succession comprising a komatiite-dominated ultramafic association containing thin interlayered felsic tuffs, underlain by younger calc-alkaline volcanic rocks with minor lenses of finer grained sedimentary rocks. Hoffmann is hosted within and on the contact of ultramafics whereas Hoffmann North is hoisted within felsic volcanics. In the Mt Monger North area, lithological trends on the eastern side of the fault are typical of the Eastern Goldfields, with large north-northwest trending folds and shear zones (principally visible on aeromagnetic images), of which the large shear structures may have acted as mantle-tapping fluid conduits. Gold mineralisation is commonly observed along similar structures elsewhere in the Eastern Goldfields (Kalgoorlie, Kanowna Belle). On the western side of the Mt Monger Fault lithological and structural trends show a marked change to predominantly east-west orientations.
A range of lithologies have been identified in the Mt Monger North Project including dolerite, leuco-dolerite, basalt, basaltic volcaniclastic units, talc rich ultramafic, chlorite ultramafic,
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ultramafic with relic cumulate textures and…
Read More:Monger Gold : Gold results uncover new Prospect at Mt Monger North
2022-03-20 21:48:05