Visible Gold Intersected Again In McLeod Lode
De Grey Mining Limited (ASX: DEG) has obtained additional significant new resource definition drilling results at Crow and recorded impressive resource definition and extensional drilling results at Aquila as it continues to grow its world-class Hemi Gold Discovery, near Port Hedland in Western Australia.
“Aquila-Crow is one of the more structurally complex areas at Hemi and has significant gold endowment,” General Manager of Exploration, Phil Tornatora, said.
“The McCleod Lode at Crow has now produced a number of thick, very high-grade intersections which add significantly to the resource potential.
“Improved targeting of these high- grade zones is ongoing as we gain a better understanding of the geological controls. Aquila continues to produce consistent, wide gold intersections throughout the lode, particularly in shallower portions.”
The Aquila and Crow zones are located to the north of the large Brolga intrusion at Hemi. The Aquila and Crow mineralised systems are approximately 1000m E-W, 600m N-S, at least 500m in depth and remains open.
Extensional and infill drilling are ongoing with extensional drilling targeting depth extensions to higher grade mineralisation. Infill resource definition drilling is being conducted at a nominal 40m x 40m spacing to define the overall mineralised system and to provide confidence in the continuity of higher-grade lodes.
The most dominant lode within the Crow intrusion is the McLeod lode and is located approximately 200m north of and oblique to the Aquila zone. The McLeod lode is currently defined over 600m in strike, 300m depth, up to 60m true thickness and remains open. The McLeod lode contains some of the highest-grade intercepts in the overall Hemi deposit.
HERC660DW1 is the latest highest-grade interval in the McLeod lode at Crow and has intersected strong mineralisation in the diamond tail including visible gold
- − 25.0m @ 12.1g/t Au from 164m including 6.0m @ 44.9g/t Au from 178m; and
- − 48.7m @ 2.8g/t Au from 195 including 6m @ 9.3g/t Au from 201m and 7.3m @ 5.4g/t Au from 231m.
This new result extends the high-grade portion of McCleod lode a further 40m to the east. Other previously reported high grade intercepts 64m @ 13.4g/t Au from 141m in HERC238 including 19m @ 42.0g/t Au from 170m 33m @ 4.9g/t Au in HERC607, 41m @ 6.8g/t Au in HERC086 and 18m @ 13.5g/t Au from 179m including 6m @ 38.9g/t Au from 180m in HERC664.
Additional significant new intervals in other intersections at Crow include:
- − 26m @ 2.6g/t Au from 56m including 5m @ 8.7g/t Au from 73m and 13m @ 2.4g/t Au from 112m in HERC661
- − 18m @ 13.5g/t Au from 179m including 6m @ 38.9g/t Au from 180m in HERC664
- − 11.8m @ 6.7g/t Au from 294.3m including 4.7m @ 13.7g/t Au from 300.8m in HERC625D
- − 14m @ 3.8g/t Au from 175m including 1m @ 41.0g/t Au from 187m in HERC568
- − 11.8m @ 3.3g/t Au from 312m including 2.1m @ 14.6g/t Au from 318m in HERC314D
- − 28.8m @ 1.6g/t Au from 244.1m including 2m @ 6.3g/t Au from 257m in HERC048D
Crow Zone – Extensional drilling
New extensional near surface drill results include:
- − 62m @ 0.9g/t Au from 25m including 4m @ 3.1g/t Au from 26m in HERC544.
- − 27m @ 0.9g/t Au from 146m in HERC621
- − 20m @ 0.8g/t Au from 90m in HERC545
- − 33m @ 0.6g/t Au from 24m and 7m @ 1.8g/t Au from 64m in HERC566
HERC544 has intersected a new lode of mineralisation to the north of Crow, in the footwall of known mineralisation. This lode is yet to be fully delineated and further drilling is planned.
Aquila Zone – Resource definition drilling
Recent resource definition drilling at Aquila has intersected strong mineralisation within the existing mineralised footprint. Significant new intercepts at Aquila include:
- 11m @ 10.5g/t Au from 51m including 1m @ 105.5g/t Au in HERC542D
- 44m @ 2.0g/t Au from 48m including 4m @ 6.4g/t Au in HERC650
- 23m @ 1.9g/t Au from 173m in HERC634
- 57m @ 1.4g/t Au from 117m in HERC562
- 25m @ 1.2g/t Au from 56m in HERC631
These intervals above were intersected in the upper portions of resource definition drill holes targeting the Crow zone and continue to demonstrate high gold endowment near surface at Aquila.
