Main Types of Nickel Ore Mineralization Characteristics And Spatiotemporal Distribution Patterns of Main Types of Nickel Ore

1.Main Types of Nickel Ore Mineralization Characteristics

1.1 Metallogenic Characteristics of Lateritic Nickel Deposits:

This type of nickel deposit is characterized by shallow burial, concentrated distribution, large scale, relatively high ore grade, ease of mining, complex smelting technology, and high production costs. It often contains associated valuable metallic elements such as Cr and Co, resulting in significant comprehensive utilization value. The metallogenic process of lateritic nickel deposits is controlled by multiple factors, including the parent rock, climate conditions, tectonic environment, topography, and hydrogeology. The parent rock is the most important ore-controlling factor, primarily ultramafic rocks, followed by mafic rocks. The tectonic environment is mainly characterized by suture zones, deep fault zones, island arc zones, orogenic belts, and Precambrian cratons. This type of nickel deposit is a product of intense lateritic weathering of ultramafic rocks under tropical-subtropical humid climate conditions. During this process, nickel is released from the parent rock, migrates, and enriches into mineralized deposits in specific strata of the weathering crust. The ultramafic rocks are mostly ophiolites, and weathering mainly occurred since the Neogene. The ore bodies are mostly distributed in areas with gentle terrain. Nickel ore bodies are mainly distributed in the laterite weathering crust. The ore bodies exhibit diverse and varied morphologies, controlled by topography, and are mostly gently dipping, layered, with some irregular lenticular shapes. The laterite weathering crust is zonal from top to bottom, generally divided into a laterite zone, a nickel-bearing limonite zone, a clay zone, a septic rock zone (nickel-rich zone), and a weathered bedrock zone. Nickel mineralization is mainly distributed in the nickel-bearing limonite zone and the septic rock zone. The nickel-bearing minerals in the ore are mainly dark nickel serpentine, nickel chlorite, green kaolinite, montmorillonite, talc, etc. (Chen Xifeng et al., 2020; Reich and Simon, 2025).

1.2 Metallogenic Characteristics of Magmatic Sulfide-Type Nickel Deposits:

This type of nickel deposit is characterized by wide distribution, deep burial, relatively high mining costs, long development cycles, and mature beneficiation and smelting technologies. It often co-exists with valuable metallic elements such as Cu, Co, and PGMs, making it valuable for comprehensive utilization. The metallogenic tectonic environment is mainly continental rift, orogenic belt, and Precambrian craton. Nickel deposits are mainly distributed in the greenstone belt of the Precambrian craton and in the mafic-ultramafic rock belts within the continental rift and orogenic belts, and are typical magmatic deposits. Nickel mineralization is closely related to mafic-ultramafic magmatic activity. The mineralization mechanism is the melting and segregation of mafic-ultramafic magma and crystallization differentiation. After the mantle-derived mafic-ultramafic magma dissolved the ore-forming elements, during its ascent and emplacement, immiscible sulfide magma and silicate magma underwent melting and segregation. A large amount of chalcophile elements in the mafic magma were distributed into the sulfide melt. The sulfide melt, rich in chalcophile elements such as Ni, Cu, Co, and PGMs, accumulated in specific areas and cooled, resulting in crystallization differentiation, which enriched Ni, Cu, Co, PGMs and other metallic elements into minerals at the bottom of the magma chamber. The main ore-controlling factor is the mafic-ultramafic rock mass, which intrudes along deep faults and their secondary faults. The faults control the distribution of the ore-bearing rock mass. The ore bodies usually occur in the lower part or bottom of the mafic-ultramafic rock mass and in the outer contact zone of the rock mass, and are lenticular or stratiform. The main ore minerals are nickel pyrrhotite, pyrrhotite, pyrite, chalcopyrite, etc. (Tang Zhongli et al., 2023; Zhang Zhibing et al., 2023; Li et al., 2024; Zhang Zhenfang et al., 2025).

2.Spatiotemporal distribution patterns of main types of nickel ore

2.1 Spatiotemporal distribution patterns of laterite nickel ore

From a tectonic perspective, these deposits are mainly distributed in suture zones, island arc zones, subduction zones, orogenic belts, and Precambrian cratons, such as the Mindoro-West Mindanao-Sulawesi island arc zone and the Luzon-East Mindanao-Maluku island arc zone (Chen Xifeng et al., 2020).

Spatially, this type of nickel deposit is highly concentrated in tropical and subtropical climate regions between 20°N and 20°S latitude, primarily in countries such as Indonesia, the Philippines, New Caledonia, Papua New Guinea, Brazil, Australia, Cuba, Ivory Coast, Burundi, Cameroon, Zimbabwe, and Madagascar (Chen Xifeng et al., 2021, 2025a). From the perspective of metallogenic epoch, the metallogenic epochs of lateritic nickel deposits are relatively concentrated, mainly in the Mesozoic and Cenozoic eras, with the Cenozoic being the dominant period. However, there are slight differences between regions. Lateritic nickel deposits in countries and regions such as the Philippines, Indonesia, Central America, the Caribbean, and Oceania were mainly formed in the Cenozoic era (Chen Xifeng et al., 2020, 2025b). Lateritic nickel deposits in countries such as Serbia, Russia, the United States, and Greece are relatively fewer, mainly formed in the Mesozoic era. Lateritic nickel deposits in countries and regions such as Australia, Brazil, and Africa were mainly formed in the Mesozoic and Cenozoic eras (Zhang Zhenfang et al., 2025).

In terms of global reserves, lateritic nickel deposits (points) account for approximately 46% of the global total number, 55% of global nickel reserves, and approximately 61% of global nickel resources. In terms of deposit size, there are approximately 120 large lateritic nickel deposits globally, accounting for 52.63% of the total number of large nickel deposits worldwide (S&P Global Market Intelligence, 2026).

2.2 Spatiotemporal distribution patterns of magmatic sulfide nickel deposits

From the perspective of the geological environment in which they were produced, they are mainly distributed in Precambrian cratons and orogenic belts, with Precambrian cratons being the most prominent (Reich and Simon, 2025), such as the Western Australian Craton. Taking Africa as an example, its magmatic sulfide-type nickel deposits mainly form within Precambrian greenstone belts, rift valleys within cratons, and active zones at the craton margins. Their spatial distribution is relatively concentrated, with most deposits located in the Bushveld Complex on the northern margin of the Kapuwal Craton, the Limpopo Active Zone, the Zimbabwe Craton (Greenstone belt, Zimbabwe Great Dyke), and the Kibala Active Zone in south-central Africa. The Kibala Active Zone is dominant, extending southward to the Ubendi Active Zone in southwestern Tanzania, collectively known as the East African Nickel Belt (Evans et al., 2016). Some scholars further extend this southward, passing through Zambia to the Zimbabwe Great Dyke, the Limpopo Active Zone, and the Kapuwal Craton, collectively referring to it as the South-Central African Nickel Belt (Tang Wenlong et al., 2018; Chen Xifeng et al., 2021).

Spatially, this type of nickel deposit is widely distributed, mainly in South Africa, Zimbabwe, Madagascar, Canada, the United States, Russia, Australia, China, and Northern Europe. From the perspective of metallogenic epochs, the mineralization spans a wide range, from the Archean to the Cenozoic, with mineralization occurring throughout. Furthermore, it shows some overlap with the epochs of major supercontinental collision events such as the Canoran, Columbia, Rodinia, and Panquia, and can be roughly divided into four metallogenic peaks: 2700–2600 Ma, 2000–1800 Ma, 1120–1090 Ma, and 250 Ma (Cai et al., 2018). The metallogenic mafic-ultramafic rocks are products of plate convergence and orogenic processes.

In terms of global reserves, magmatic sulfide nickel deposits (points) account for approximately 52% of the global total number, 35% of global nickel reserves, and 30% of global nickel resources. In terms of deposit size, there are 106 large magmatic sulfide nickel deposits globally, accounting for 46.4% of the total number of large nickel deposits worldwide (S&P Global Market Intelligence, 2026).

2.3 Spatiotemporal distribution patterns of submarine nodular nickel ore

Spatially, polymetallic nodules are prevalent on most seabeds globally, with a mineralization epoch of the Cenozoic. In recent years, significant exploration progress has been made in nickel-rich seabed polymetallic nodules in Tonga and Nauru, with the discovery of the TOML and NORI nickel deposits, respectively. Both are currently in the pre-feasibility study stage, indicating a low overall level of exploration and development. In recent years, countries such as Canada, the United States, and Japan have conducted beneficiation tests on seabed polymetallic nodules to promote large-scale development and utilization.

In terms of global reserves, this type of nickel deposit has proven nickel reserves of 714,000 tons and proven nickel resources of 20,334,000 tons, representing a limited global share, but it may have significant potential for future development and utilization.