Overview
| Stage | Permitting |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
|
| Mine Life | 13 years (as of Jan 1, 2012) |
The Lake Giles Projects (comprising the Moonshine Magnetite Project and the Ularring Hematite Project) is located approximately 450 km east northeast of the coastal city of Perth, Western Australia.
The Company has received approval to develop an iron ore mine for the Ularring Hematite Project and associated infrastructure at the project location under the Environmental Protection Act 1986 and the Environmental and Biodiversity Conservation Act 1999. On March 26, 2021, the Company made application for two miscellaneous licences to support the development of a mining camp and crushing and screening operations near the Snark deposit of the Ularring Hematite Project.
The Company continues to examine options for an early production opportunity for its Ularring Hematite Project at Lake Giles, subject to a return to a supportive iron ore pricing environment for an Ularring product. |
Source:
p. 16,17
On 30 September 2022, Macarthur Minerals Limited held 100% of the outstanding and issued share capital of Macarthur Australia. Macarthur Australia’s wholly owned subsidiary Macarthur Iron Ore Pty Ltd (MIO) holds assets which include the Iron Ore Projects.
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Summary:
The iron mineralisation is related to the extensive Banded Iron Formation (BIF) that occurs throughout the tenements. These outcrop over a combined strike length of at least 80 km. Aerial magnetics data shows that BIF units totalling at least 300 km of strike occur within the tenements, mostly under shallow cover.
The focus of this document is the hematite/goethite style of mineralisation.
MMS’s tenements cover most of the Yerilgee Greenstone Belt which is over 80 kilometres in length and up to 10 kilometres wide, and lies within the Southern Cross Province of the Yilgarn Craton. The Yilgarn Craton consists of multiple lenticular greenstone belts surrounded by variably foliated gneissic granitoids.
The greenstone belts consist of metamorphosed ultramafic, mafic and sediments, including banded iron formation (BIF) which are Archaean in age and are commonly intruded by mafic, intermediate and granitic rocks.
The greenstone belts are generally metamorphosed to mid greenschist facies towards the central parts of the belt and lower amphibolite facies on the edges of the belt where they are in contact with the granitoids.
The greenstone belts are highly deformed, faulted and folded. Four deformation events are recognised regionally throughout the Yilgarn Craton:
D1 - movement along the south-north direction
D2 and D3 - shortening and shear movements in the ENE-WSW compression direction
D4 - La ........
Summary:
Two mining methods were evaluated for the Ularring Hematite Project, being conventional Excavate, Load and Haul (“ELH”) and Continuous Mining. The strength characteristics of the deposit and waste material are suitable for both mining methods, with minimal blasting required.
This study has assumed conventional ELH for all mining as:
- The close proximity of waste dumps are well suited to conventional surface mining trucks;
- Conventional ELH equipment fleets can be readily relocated from pit to pit;
- Conventional ELH for both ore and waste mining will minimise equipment interaction in small pits;
- The short haul distance from the Snark and Drabble Downs pits is suitable for conventional mining trucks; and
- The unit cost rates are lower.
Road trains will be utilised for ore haulage from pit rim to ROM for the Central and Banjo pits.
The Ularring Iron deposits crop-out at surface, and tend to be relatively narrow across strike and elongated along strike. The base of the mineralisation being considered in this study occurs at between 40m to 50m below the surrounding countryside, meaning that resultant pits will be relatively shallow. The rock type is generally friable, except for some caprock cover at the surface.
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Flow Sheet:
Summary:
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Projected Production:
| Commodity | Units | Avg. Annual | LOM |
|
Iron (hematite)
|
kt
| 2,000 | 25,770 |
All production numbers are expressed as concentrate.
* According to 2012 study.
Reserves at July 1, 2012:
| Category | Tonnage | Commodity | Grade |
|
Probable
|
42.95 Mt
|
Iron (hematite)
|
47 %
|
|
Indicated
|
54,460,000 t
|
Iron (hematite)
|
47.2 %
|
|
Inferred
|
25,990,000 t
|
Iron (hematite)
|
45.4 %
|
Source:
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Mine Management:
| Job Title | Name | Profile | Ref. Date |
|
.......................
|
.......................
|
|
May 30, 2022
|
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