The Mineral Resources for VRX are shown in Table 1 below.
Table 1 Mineral Resource Statement (as at 30 June 2023)
Project |
Classification |
Mt |
SiO₂ % |
Al₂O₃ % |
Fe₂O₃ % |
TiO₂ % |
LOI % |
Muchea |
Indicated | 29 | 99.6 | 0.1 | 0.03 | 0.1 | 0.2 |
Inferred | 179 | 99.6 | 0.1 | 0.02 | 0.1 | 0.2 | |
Total | 208 | 99.6 | 0.1 | 0.02 | 0.1 | 0.2 | |
Arrowsmith North |
Measured | 10 | 95.9 | 1.9 | 0.7 | 0.3 | 0.7 |
Indicated | 237 | 97.7 | 1.0 | 0.4 | 0.2 | 0.5 | |
Inferred | 266 | 98.4 | 0.7 | 0.3 | 0.2 | 0.4 | |
Total | 513 | 98.0 | 0.9 | 0.3 | 0.2 | 0.4 | |
Arrowsmith Brand |
Inferred | 523 | 97.3 | 1.4 | 0.4 | 0.2 | 0.6 |
Total | 523 | 97.3 | 1.4 | 0.4 | 0.2 | 0.6 | |
Arrowsmith Central |
Indicated | 28.2 | 96.6 | 1.7 | 0.4 | 0.2 | 0.7 |
Inferred | 48.3 | 96.9 | 1.5 | 0.4 | 0.2 | 0.7 | |
Total | 76.5 | 96.8 | 1.5 | 0.4 | 0.2 | 0.7 | |
Boyatup |
Inferred | 60 | 97.8 | 0.8 | 0.2 | 0.1 | 0.9 |
Total | 60 | 97.8 | 0.8 | 0.2 | 0.1 | 0.9 | |
Total Mineral Resource
|
1,381 | Million Tonnes |
Table 2 Mineral Resource Statement Comparison (as at 30 June 2023)
Project |
2022 |
2023 |
Change |
|||
Mt |
SiO₂ % |
Mt |
SiO₂ % |
Mt |
SiO₂ % |
|
Muchea |
208 | 99.6 | 208 | 99.6 | ||
Arrowsmith North |
771 | 98.0 | 513 | 98.0 | -258 | 98.0 |
Arrowsmith Brand |
523 | 97.3 | 523 | 97.3 | ||
Arrowsmith Central |
76.5 | 96.8 | 76.5 | 96.8 | ||
Boyatup |
60 | 97.8 | 60 | 97.8 | ||
Total Mineral Resource | 1,116 | 98.2 | 1,381 | 97.9 | 265 | 96.6 |
Ore Reserves
The Ore Reserves for VRX Silica are shown in Table 3 below.
Table 3 Ore Reserve Statement (as at 30 June 2023)
Project |
Classification |
Product |
Mt |
SiO2 % |
Al2O3 % |
Fe2O3 % |
TiO2 % |
LOI % |
Muchea |
Probable | F80 | 10.2 | 99.9 | 0.02 | 0.008 | 0.03 | 0.1 |
F80C | 4.25 | |||||||
F150 | 4.25 | 99.8 | 0.07 | 0.015 | 0.035 | 0.1 | ||
Muchea Ore Reserve | 18.7 | Million Tonnes | ||||||
Arrowsmith North |
Proved | AFS20 | 0.8 | 99.5 | 0.25 | 0.07 | 0.05 | 0.1 |
AFS35 | 3.9 | 99.5 | 0.5 | 0.06 | 0.05 | 0.1 | ||
AFS55 | 2.7 | 99.2 | 0.5 | 0.1 | 0.05 | 0.1 | ||
Local | 1.8 | |||||||
Proved Ore Reserve | 9.2 | Million Tonnes | ||||||
Probable | AFS20 | 24.2 | 99.5 | 0.25 | 0.07 | 0.05 | 0.1 | |
AFS35 | 102.5 | 99.5 | 0.5 | 0.06 | 0.05 | 0.1 | ||
AFS55 | 51.1 | 99.2 | 0.5 | 0.1 | 0.05 | 0.1 | ||
Local | 34.1 | |||||||
Probable Ore Reserve | 212 | Million Tonnes | ||||||
Arrowsmith North Ore Reserve | 221 | Million Tonnes | ||||||
Arrowsmith Central |
Probable | CF400 | 4.2 | 99.6 | 0.25 | 0.04 | 0.03 | 0.1 |
C20 | 8.4 | |||||||
C40 | 4.2 | |||||||
High TiO2 | 2.2 | <1% | 2% | |||||
Arrowsmith Central Ore Reserve | 18.9 | Million Tonnes | ||||||
Total Ore Reserve | 259 | Million Tonnes |
The movement in Mineral Resource estimates over the past year are tabulated below:
Table 4 Ore Reserve Statement Comparison (as at 30 June 2022)
Project |
2022 |
2023 |
Change |
Mt |
Mt |
Mt |
|
Muchea |
18.7 | 18.7 | |
Arrowsmith North |
223.2 | 221.0 | -2 |
Arrowsmith Central |
18.9 | 18.9 | |
Total Ore Reserve | 261 | 259 | -2 |
Competent Persons’ Statements
The information in this document that relates to Arrowsmith North, Arrowsmith Brand, Arrowsmith Central, Muchea and Boyatup Exploration Results, and Muchea Aircore Drilling Area, Arrowsmith Brand and Boyatup Mineral Resource Estimates are based on data collected and compiled under the supervision of Mr David Reid, who is a full-time employee of VRX Silica. Mr Reid, BSc (Geology), is a registered member of the Australian Institute of Geoscientists and has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and the activity being undertaken to qualify as a Competent Person under the 2012 edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (JORC Code). Mr Reid consents to the inclusion of the data in the form and context in which it appears.
The information in this report that relates to Arrowsmith North Mineral Resources is based on, and fairly reflects, information compiled by Mr David Williams, a Competent Person, who is an employee of CSA Global and a Member of the Australian Institute of Geoscientists. Mr Williams has sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as Competent Person as defined in the 2012 Edition of the Australasian Code for the Reporting of Exploration Results, Mineral Resources, and Ore Reserves (JORC Code). Mr Williams consents to the disclosure of information in this report in the form and context in which it appears.
The information in this document that relates to Arrowsmith Central and Muchea Auger area Mineral Resources is based on information compiled by Mr Grant Louw who was a full-time employee of CSA Global, under the direction and supervision of Dr Andrew Scogings, who is an Associate of CSA Global. Dr Scogings is a Member of the Australasian Institute of Mining and Metallurgy and a Member of the Australian Institute of Geoscientists. He is a Registered Professional Geologist in Industrial Minerals. Dr Scogings has sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as Competent Person as defined in the 2012 edition of the Australasian Code for the Reporting of Exploration Results, Mineral Resources, and Ore Reserves (JORC Code). Dr Scogings consents to the disclosure of information in this report in the form and context in which it appears.
The information in this report that relates to Industrial Minerals considerations for Arrowsmith North, Arrowsmith Central and Muchea, with respect to Clause 49 of the JORC Code is based on, and fairly reflects, information compiled by Dr Andrew Scogings, a Competent Person, who is an employee of CSA Global, a Member of the Australian Institute of Geoscientists and is a Registered Professional Geoscientist (RP Geo. Industrial Minerals). Dr Scogings has sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as Competent Person as defined in the 2012 Edition of the Australasian Code for the Reporting of Exploration Results, Mineral Resources, and Ore Reserves (JORC Code). Dr Scogings consents to the disclosure of information in this report in the form and context in which it appears.
The information in this document that relates to Arrowsmith Central and Muchea Probable Ore Reserves is based on data collected and compiled under the supervision of Mr David Reid, who is a full-time employee of VRX Silica. Mr Reid, BSc (Geology), is a registered member of the Australian Institute of Geoscientists and has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and the activity being undertaken to qualify as a Competent Person under the 2012 edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (JORC Code). Mr Reid consents to the inclusion of the data in the form and context in which it appears.
The information in this report that relates to Arrowsmith North metallurgical test work is based on information compiled by Mr Steven Hoban who is the Principal Metallurgist and a Director of BHM Process Consultants. Mr. Hoban is a Member of the Australasian Institute of Mining and Metallurgy. Mr Hoban has sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as Competent Person as defined in the 2012 Edition of the Australasian Code for the Reporting of Exploration Results, Mineral Resources, and Ore Reserves (JORC Code). Mr Hoban consents to the disclosure of information in this report in the form and context in which it appears.
The information in this announcement that relates to Arrowsmith North Ore Reserves is based on information compiled by Mr Quinton de Klerk, who is employed by Cube Consulting. Mr de Klerk is a fellow of the Australasian Institute of Mining and Metallurgy and has sufficient experience which is relevant to the activity he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (the JORC Code). Mr de Klerk consents to the inclusion in the report of the matters based on his information in the form and context in which it appears
Material Assumptions
Full details of the bankable feasibility studies for the Arrowsmith North, Arrowsmith Central and Muchea Silica Sand Projects, including material assumptions, are contained in VRX’s ASX announcements of 28 August 2019, 17 September 2019 and 18 October 2019, respectively. All such material assumptions continue to apply and have not materially changed from the date of release of the respective BFS. While VRX considers all of the material assumptions to be based on reasonable grounds, there is no certainty they will be correct or that the range of outcomes indicated within the studies will be achieved.