Kingsrose holds an 85% interest in PT Natarang Mining, the holder of a 4th generation Contract of Work with the Government of the Republic of Indonesia. The Contract of Work covers a total of 10,540ha, which contains two past producing open pit and underground mines at the Talang Santo and Way Linggo mines. Mining ceased in 2020 with total production over 10 years of 205koz gold and 1.5 Moz silver, at an average head grade of 10 g/t AuEq. All mining infrastructure remains on site under care and maintenance, including a 140ktpa mineral processing facility and Merrill Crowe plant.
The project is located on the Trans Sumatra Fault zone which hosts several multi-million ounce gold deposits, and the licence holding remains highly prospective with several targets identified for follow up exploration work:
- Exploration since mining ceased in 2020 has defined an additional mineral resource of 1.4 Mt at 5.4 g/t gold for 240koz gold at Talang Santo and the resource remains open down plunge.
- In addition to the near-mine resource expansion potential, several earlier stage, near surface vein targets with little recent exploration work have been identified. These represent excellent exploration targets with similar vein characteristics, geochemistry and alteration to the mined vein structures at Talang Santo and Way Linggo.
History Geology & mineralisation
The deposits of the Way Linggo Project are located on the prolifically mineralised Trans-Sumatran Fault fore-arc to intra-arc, which is part of the Pacific Rim of Fire. The project is classified as low sulphidation epithermal quartz vein gold-silver deposits, and the area is considered highly prospective for this type of mineralisation with several multi-million ounce deposits located on the Trans-Sumatran fault to the north and south.
The project is located over a zone of structural complexity at the northern end of the Semangka Graben where pull-apart basins, fault splays and dilational jogs occur related to the Trans-Sumatran Fault Zone. The Trans-Sumatran Fault is a major dextral strike slip fault within the Sunda-Banda Volcanic Arc. All significant gold deposits known on the island of Sumatra are related to this structure.
Other significant gold deposits in Sumatra and West Java is similar structural settings are Martabe (5.90Moz Au), Pongkor (3.6Moz Au), Lebong Tandai (1.4Moz Au) and Lebong Donok (1.3Moz Au).
For further information please see link to pdf provided. Exploration
The Way Linggo project holds exploration potential, with the broader project area remaining prospective and under-explored for additional gold deposits. The renewed exploration team has commenced a systematic and disciplined exploration program to be implemented over the course of 2021 to develop a pipeline of drill targets aimed at delineating a near term production target.
Priority targets are the focus of ongoing exploration with the aim of generating drill targets and include:
- Talang Cluster – vein swarm located immediately south of Talang Santo mine, with limited drilling but large scale pathfinder element anomaly and high level epithermal vein textures over an area of 1000 m by 600 m
- Way Linggo Area – 2.4 km long structural feature with outcropping epithermal veins and stockworks, located between the Way Linggo mine and the Semung Kecil prospect. The target displays a linear magnetic low and adjacent resistivity high, with strong gold in soil anomalies at the NW and SE parts. No exploration work has been conducted in the central part of the anomaly.
- Rowo Rejo Corridor – The Rowo Rejo area displays potential for a concealed vein system located under young sedimentary and volcanic cover units:
- Mineralised epithermal vein clasts in basal conglomerate are observed adjacent to a large dilational structure, which is concealed beneath young cover.
- Outcropping silica sinter material indicates nearby presence of hydrothermal system.
- Strong but localised gold in soil anomaly at Talang Tebat has not been drilled.
For further information please see link to pdf provided. Resource table
Kingsrose Mining announced an updated mineral resource at Talang Santo and Way Linggo as below, on 10th August 2021 and 18 September 2020 respectively. For further information please click here.
Competent Persons Statement
The information in this report that relates to the Mineral Resource Estimates is based on and fairly represents information compiled under the supervision of Mr Bill Rayson, who is a member of the Australasian Institute of Mining and Metallurgy (AusIMM). Mr Rayson is a consultant to the Company and is an employee of “The Trustee For TES Trust”. Mr Rayson has sufficient experience that is relevant to the style of mineralization and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the “Australasian Code for Reporting Exploration Results, Mineral Resources and Ore Reserves”. Mr Rayson consents to the inclusion in this report of the matter based on his information in the form and context in which it appears.
Further information that relates to the Mineral Resource Estimate of the Talang Santo deposit is available in the report entitled “Talang Santo Resource Update” dated 30 June 2021 and is available to view on the Company’s website (www.kingsrosemining.com.au).
Further information that relates to the Mineral Resource Estimate of the Way Linggo deposit is available in the report entitled “Way Linggo Resource Update” dated 18 September 2018 and is available to view on the Company’s website (www.kingsrosemining.com.au).
The information presented that relates to the Exploration Targets and Exploration Results is based on information compiled under the supervision of Dr Michael Andrews, who is a Fellow of the Australasian Institute of Mining and Metallurgy. Dr Andrews has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the “Australasian Code for Reporting Exploration Results, Mineral Resources and Ore Reserves”. Dr Andrews is a Director and Substantial Shareholder of Kingsrose Mining Limited. Dr Andrews consents to the inclusion in this report of the matter based on his information in the form and context in which it appears.
