Overview
| Status | Care and Maintenance |
| Mine Type | Underground |
| Commodities |
|
| Mining Method |
|
| Production Start | ...  |
| Mine Life | 5 years (as of Jan 1, 2020) |
Red River has undertaken a detailed review in preparation for the restart of the Hillgrove Gold Project. The outcome of the review was a lean capital efficient staged restart process, with Stage One (processing of Bakers Creek Stockpile) scheduled to commence at the end of CY2020, and Stage Two (full restart of UG mining operations) scheduled to commence at the end of CY2021.
Red River started gold production from the Hillgrove mine’s Bakers Creek stockpile in December 2020 and trucked its first load of gold concentrate from the mine on June 18, 2021.
On September 7, 2022, Red River Resources placed its Hillgrove operation in New South Wales on care and maintenance while it undertakes a detailed study on the options available to it. |
Source:
p. 22
Red River acquired the Hillgrove Gold Project in August 2019 from a private vendor.
Contractors
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Deposit Type
- Vein / narrow vein
- Hydrothermal
- Breccia pipe / Stockwork
Summary:
The Hillgrove mineralisation can be classified as orogenic style, antimony – gold deposits, that are hosted in a combination of the Mid Carboniferous Girrakool Sediments and Late Carboniferous – Early Permian Granites. The setting is part of the New England Orogen, one of four which formed most of the east coast of Australia. The mineralised zones are structurally controlled within a NW trending shear corridor, formed from the movement of two regional faults (Hillgrove and Chandler). Multi-phase antimony – gold – tungsten mineralisation has been hydrothermally emplaced into narrow shears (0.1 m – 10 m wide), which have good strike and depth extents. Gold mineralisation is predominantly refractory (associated with arsenopyrite), and also occurs as aurostibite in stibnite, and as particle gold.
Mineralised vein and breccia systems at Hillgrove are hosted in biotite-grade metamorphosed sedimentary rocks of the late Palaeozoic Girrakool Beds (originally shale, siltstone, argillite, greywacke), biotite monzogranite (S-type) of the ~300 Ma Hillgrove Adamellite and granodioritic-dioritic rocks of the early Permian Bakers Creek Diorite Complex. The structures and mineralisation post-date, and are unrelated to any of the host rocks. Syn-mineralisation lamprophyre dykes that are both cut by mineralisation as well as having intruded mineralised structures, are dated at 247-255 Ma (Ashley et al., 1994), thus bracketing the potential age of mineralisation to approximately the P ........
Summary:
UG Operations will commence in the Metz Mining Centre, allowing Red River to take advantage of the existing UG development & infrastructure to target the high-grade Lode systems (Syndicate, Blacklode & Sunlight).
The Metz Mining Centre is currently on active care & maintenance, with all infrastructure (ventilation, power, water) in place to support near term restart of mining. Previous owners invested significant capital in development the Metz Mining Centre, with approximately 3,950m of declines and capital development, 3,400m of ore drives in the Syndicate Lode, 500m of ore drives in Blacklode and 320m of ore drives in Cox’s Lode.
Mining methods are assumed to be underground long hole stoping techniques on a 20 m level spacing. Minimum mining widths of 1.5 m are expected.
Source:
Flow Sheet:
Summary:
- subscription is required.
Reserves at June 30, 2022:
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Measured
|
442 kt
|
Gold
|
3.6 g/t
|
51 koz
|
|
Measured
|
442 kt
|
Antimony
|
3.8 %
|
17 kt
|
|
Measured
|
442 kt
|
Gold Equivalent
|
9 g/t
|
|
|
Indicated
|
3,766 kt
|
Gold
|
4.8 g/t
|
582 koz
|
|
Indicated
|
3,766 kt
|
Antimony
|
1.3 %
|
48 kt
|
|
Indicated
|
3,766 kt
|
Gold Equivalent
|
6.6 g/t
|
|
|
Inferred
|
3,017 kt
|
Gold
|
4.2 g/t
|
404 koz
|
|
Inferred
|
3,017 kt
|
Antimony
|
0.8 %
|
25 kt
|
|
Inferred
|
3,017 kt
|
Gold Equivalent
|
5.3 g/t
|
|
|
Total Resource
|
7,226 kt
|
Gold
|
4.5 g/t
|
1,037 koz
|
|
Total Resource
|
7,226 kt
|
Antimony
|
1.2 %
|
90 kt
|
|
Total Resource
|
7,226 kt
|
Gold Equivalent
|
6.2 g/t
|
|
Financials:
| | Units | 2022 | 2021 |
|
Revenue
|
M AUD
| ...... | ...... |
|
EBITDA
|
M AUD
| ...... | ...... |
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| HME Type | Model | Size | Quantity | Ref. Date |
|
Jumbo
|
|
|
.......................
|
Sep 19, 2019
|
|
Loader
|
.......................
|
|
.......................
|
Sep 19, 2019
|
|
Truck (dump)
|
.......................
|
40 t
|
.......................
|
Oct 22, 2020
|
|
Truck (underground)
|
|
|
.......................
|
Sep 19, 2019
|
- Subscription is required.
Mine Management:
| Job Title | Name | Profile | Ref. Date |
|
.......................
|
.......................
|
|
Feb 10, 2023
|
- Subscription is required.
Staff:
| Total Workforce | Year |
|
|
2022
|
|
|
2021
|
- Subscription is required.