Formation of serpentinite-hosted, Fe-rich arsenide ores at the latest stage of mineralization of the Bou-Azzer mining district (Morocco)

Hajjar, Zaineb; Gervilla, Fernando; Fanlo, Isabel; Gonzáléz-Jiménez, José María; Ilmen, Said

doi:10.1016/j.oregeorev.2020.103926

Cited by 6 publications

(3 citation statements)

References 31 publications

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“…Each structure shows similar features that explain the hydrothermal control of mineralisation by the circulation of hot brines along lithological contacts (massive bodies) or faults (veins system)(e.g. Ennaciri et al, 1995;Essarraj et al, 2005;Ahmed et al, 2009;Burisch et al, 2017;Ikenne et al, 2020;Hajar et al, 2020) (Gervilla et al, 2012;Fanlo et al, 2015);…”

Section: Mineralogical Evolutionmentioning

confidence: 99%

Co-Ni-arsenide mineralisation in the Bou Azzer district (Anti-Atlas, Morocco): Genetic model and tectonic implications

Enora

Chauvet

Kouzmanov

et al. 2021

Ore Geology Reviews

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Co-Ni-arsenide mineralisation in the Bou Azzer district (Anti-Atlas, Morocco): genetic model and tectonic implications

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Section: Mineralogical Evolutionmentioning

confidence: 99%

Co-Ni-arsenide mineralisation in the Bou Azzer district (Anti-Atlas, Morocco): Genetic model and tectonic implications

Enora

Chauvet

Kouzmanov

et al. 2021

Ore Geology Reviews

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“…Depending on the origin, serpentinite contains magnesium silicate compounds: forsterite (Mg2SiO4), metaforsterite (MgSiO3), talc (Mg3Si4O10(OH)2), antigorite (Mg6(Si4O10)(OH)8), chrysotile (Mg3[Si2O5](OH)4), lizardite (Mg3(Si2O5)(OH)4), olivine (mixture of Mg2SiO4 and Fe2SiO4), magnesite (MgCO3) and associated rocks: FeO•Fe2O3 (magnetite) with inclusions of FeCr2O4 (chromite) and NiS (nickel sulfide), ilmenite FeTiO3, etc. [2]. The serpentine structure consists of double layers of Mg octahedra and Si tetrahedra [3].…”

Section: Introductionmentioning

confidence: 99%

Effect of temperature on the kinetics of the process of nitric acid decomposition of Arvaten serpentinite

Ahmadjonov

Alimov

Tuychi

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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The process of decomposition of serpentinite from the Arvaten deposit (Uzbekistan) with 30% nitric acid at its stoichiometric norm of 100% and temperatures of 313, 323, 333, 343 and 353 K for 120 min was studied in this work. It has been established that with increasing temperature, the decomposition coefficient (Cdec.) of MgO, Fe2O3 and Al2O3 increases from 11.48 to 82.5%; from 13.96 to 41.49% and from 38.87 to 96.61%, respectively. Meaning Cdec. iron oxide in the form of magnetite is relatively low than other components. Cdec. made it possible to reveal the rate constant of decomposition of serpentinite in nitric acid at the above temperatures. The rate of decomposition of the raw material is apparently limited by the diffusion of the layer of amorphous silica particles on the surface of the raw material. Depending on the temperature (313-353 K), the value of the apparent activation energy (Ea) of the Arvaten serpentinite lies from 21.79 to 7.53 kcal/mole or from 91.21 to 31.53 kJ/mole, and the average value (Eaver.) is 14.226 kcal/mole and 59.68 kJ/mole, respectively. It turned out that the data are similar to other serpentinite deposits. That is, Arvaten serpentinite is reactive towards nitric acid.

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“…반면, 보국(경산)광산에서는 초염기성 암체 또는 염기성암의 존재는 기재된 바 없다. 전세계 유 일한 코발트 단독광종 광산인 모로코 Bou Azzer지역의 맥상광상에서 제시된 바와 같이 사문암과 섬록암 접촉대 를 따라 열수가 공급된 지역을 중심으로 함 코발트 맥상 광상이 배태되고 있다(Hajjar et al, 2021). 우리나라에서 도 이와 유사한 지질환경과 조건을 고려할 필요가 있는 데, 울산철광산과 관련된 가대리화강암과 접촉하고 있는 사문암체가 대상지로 고려될수 있다(Choi and Wee, 1994).…”

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Upstream Risks in Domestic Battery Raw Material Supply Chain and Countermeasures in the Mineral Resource Exploration Sector in Korea

Heo

Kim

2022

Econ. Environ. Geol.

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In line with the megatrend of 2050 carbon neutrality, the amount of critical minerals used in clean-energy technology is expected to increase fourfold and sixfold, respectively, according to the Paris Agreement-based scenario as well as the 2050 carbon-neutrality scenario. And, in the case of Korea, in terms of the battery supply chain used for secondary batteries, the midstream that manufactures battery materials and battery cell packs shows strength, but the upstream that provides and processes raw materials is experiencing difficulties. The Korea Institute of Geoscience and Mineral Resources has established a strategy to secure lithium, nickel, and cobalt and is conducting surveys to respond to the upstream risk of these types of battery raw materials. In the case of lithium, exploration has been carried out in Uljin, Gyeongsangbuk-do since 2020, and by the end of 2021, the survey area was selected for precision exploration by synthesizing all exploration data and building a 3D model. Potential resources will be assessed in 2022. In the case of nickel, the prospective site will be selected by the end of 2022 through a preliminary survey targeting 10 nickel sulfide deposits that have been prospected in the past. In the case of cobalt, Boguk cobalt is known only in South Korea, but there is only a record that cobalt was produced as a minor constituent of hydrothermal deposit. According to the literature, a cobalt ore body was found in the contact area between serpentinite and granite, and a protocol for cobalt exploration in Korea will be established.

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Formation of serpentinite-hosted, Fe-rich arsenide ores at the latest stage of mineralization of the Bou-Azzer mining district (Morocco)

Cited by 6 publications

References 31 publications

Co-Ni-arsenide mineralisation in the Bou Azzer district (Anti-Atlas, Morocco): Genetic model and tectonic implications

Co-Ni-arsenide mineralisation in the Bou Azzer district (Anti-Atlas, Morocco): Genetic model and tectonic implications

Effect of temperature on the kinetics of the process of nitric acid decomposition of Arvaten serpentinite

Upstream Risks in Domestic Battery Raw Material Supply Chain and Countermeasures in the Mineral Resource Exploration Sector in Korea

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