This high-grade intercept, together with additional gold assays received, occur within and below the previously identified main zone of the initial high-grade reverse circulation (RC) percussion discovery hole
In addition to the high-grade gold assays from CDH10, the Company also received a number of deeper high-grade gold intervals from diamond drill hole CDH09 including 0.35m at 55.6 g/t Gold from 130.4m, 0.2m at 22.23 g/t Gold from 133.8m and 0.2m at 15.67 g/t Gold from 170.75m. These high-grade assays at depth show the significant potential of the system being drilled at Comet (see Figure 2 – Updated Comet Cross Section below).
GPAC Chief Operating Officer and Director,
Figure 1 – Comet Location Maps
Figure 2 – Updated Comet Cross Section 5850093mN
Figure 3 - Visible Gold Contained within CDH10 Quartz Vein Associated with Arsenopyrite and Stibnite needles
Assays reported in this news release cover nine diamond drill holes totalling 1,380m. See Table 1 for all gold assay results received from the diamond drill program at Comet.
The Comet gold mineralization is hosted by Ordovician slates and sandstones, which are folded in a series of north-south striking concertina folds and regionally form part of the Fosterville Sub-Domain, east of Bendigo. The west dipping thrust fault at Comet, known as the Comet fault zone, is associated with the gold mineralization at the prospect. This high-grade gold discovery is located within the core of the Comet Anticline, where it is intersected by the
The Comet prospect has epizonal characteristics of Au-As-Sb mineralization similar to the
A review of the drilling done to date has meant that there remain sections of the drilling that require further core cutting and assaying particularly in the lower part of CDH02 drillhole.
Figure 4 – Deformation model
An example of the mechanisms for the development of this large structural framework is presented in Figure 4. East-West compression causes the development of bedding plane slip surfaces, thrusts and extension arrays through progressive coaxial shortening (Sibson and Scott, 1998). West dipping thrust faults and extensional flat lying quartz veining especially in the zone of east dipping beds east of the anticline are dilational and create foci for gold mineralization to occur. Later strike slip faulting disrupted and fractured the gold mineralization previously deposited.
The model indicates that further gold mineralization will occur along the west dipping thrust faults especially when in proximity to the core of the anticline, as well as within the extensional quartz veined array.
Apart from planned drilling along strike, further drilling is planned west of CDH02 to determine the location of the Comet Anticline and Comet Thrust intersection repetition (Figure 5).
Figure 5 – Comet drill targets for further exploration.
Drill Results and Intercepts:
HoleID | East | North | Azimuth (deg.) | Dip (deg.) | From (m) | To (m) | Downhole Interval (m) | Au g/t |
CDH02 | 263510.26 | 5850092.31 | 90.12 | -78.7 | 117.0 | 124.1 | 5.1 | 0.71 |
and | 131.0 | 133.5 | 2.5 | 0.98 | ||||
and | 136.45 | 140.0 | 3.55 | 1.29 | ||||
and | 186.7 | 191.1 | 4.4 | 0.72 | ||||
and | 217.7 | 218.9 | 1.2 | 0.68 | ||||
CDH03 | 263526.67 | 5850125.28 | 84.22 | -64.6 | 85.0 | 88.0 | 3.0 | 1.03 |
and | 101.0 | 102.0 | 1.0 | 1.04 | ||||
CDH04 | 263524.08 | 5850124.16 | 82.72 | -74.8 | 103.0 | 105.0 | 2.0 | 0.60 |
and | 112.0 | 115.0 | 3.0 | 0.36 | ||||
and | 148.0 | 149.0 | 1.0 | 0.51 | ||||
CDH05A | 263519.28 | 8580092.64 | 92.12 | -65.6 | 81.50 | 84.10 | 2.6 | 0.48 |
and | 86.65 | 87.65 | 1.0 | 0.32 | ||||
and | 90.95 | 92.95 | 2.0 | 4.79 | ||||
CDH06 | 263514 | 5850093 | 75 | -63 | 88.90 | 90.00 | 1.85 | 0.67 |
and | 97.45 | 98.00 | 0.55 | 0.97 | ||||
and | 100.78 | 102.5 | 2.94 | 0.81 | ||||
and | 104.95 | 105.30 | 0.4 | 10.90 | ||||
CDH07 | 263514.03 | 5850093 | 68 | -72 | 105.55 | 115.95 | 10.40 | 1.21 |
and | 119.25 | 120.65 | 1.4 | 0.64 | ||||
CDH08 | 263511 | 5850090 | 107 | -70 | 95.9 | 98.2 | 2.3 | 0.66 |
and | 99.8 | 105.3 | 5.5 | 0.92 | ||||
and | 107.75 | 110.45 | 2.7 | 2.18 | ||||
and | 114.6 | 116.9 | 2.3 | 0.35 | ||||
and | 141.7 | 141.97 | 0.27 | 0.67 | ||||
and | 151.35 | 151.70 | 0.35 | 0.33 | ||||
and | 168.75 | 169.3 | 0.55 | 6.26 | ||||
CDH09 | 263510 | 5850090 | 82 | -73 | 117.45 | 118.45 | 1.0 | 10.62 |
and | 130.40 | 130.75 | 0.35 | 55.60 | ||||
and | 133.8 | 134.0 | 0.2 | 22.63 | ||||
and | 170.75 | 170.95 | 0.2 | 15.67 | ||||
CDH10 | 263532 | 5850120 | 143 | -69 | 101.9 | 105.9 | 4.0 | 22.3 |
Except for diamond drill holes CDH09 and CDH10 that use a 1.0 g/t Au cut off, the above results use a 0.3 g/t Au cut-off grade and maximum 2m internal waste. True widths are not known due to the complexities of the mineralization. Additional drilling is required to determine true widths. The assays are not capped.
Quality Assurance / Quality Control
All assays were subject to quality control measures appropriate for percussion drilling with duplicates, blanks and commercially available standards with the expected results from the samples submitted. All assays were conducted by
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Reference
Sibson and Scott, 1998, Stress/fault controls on the containment and release of over-pressured fluids: Examples from gold-quartz vein systems in
Forward-Looking Statements
Information set forth in this news release contains forward-looking statements that are based on assumptions as of the date of this news release. These statements reflect management's current estimates, beliefs, intentions and expectations. They are not guarantees of future performance.
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Figure 1
Comet Location Maps
Figure 2
Updated Comet Cross Section 5850093mN
Figure 3
Visible Gold Contained within CDH10 Quartz Vein Associated with Arsenopyrite and Stibnite needles
Figure 4
Deformation model
Figure 5
Comet drill targets for further exploration.
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