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In this paper, 185 iron manganeses crustal samples of 14 seamounts in 5 seamount groups of the Pacific seamount group (Central Pacific seamounts, Line seamount Chain) and the Western Pacific seamount group (Magellanic seamounts, Markus−Wake seamounts, marshall seamounts) have been analyzed for tellurium, and their spatial distribution, geochemical characteristics, chemical form and resource potential have been studied. The results show that the variation range of tellurium in cobalt-rich crusts is from 17.8 μg/g to 145.2 μg/g, and the average value is 47.4 μg/g. The content range and regional enrichment degree of tellurium in each seamount are quite different. The enrichment degree in descending order is the Magellanic seamounts, Marshall seamounts, Marcus−Wake seamounts , Central Pacific seamounts and Line seamount Chain, showing a trend of gradually decreasing from west to east, and different seamount groups also show obvious regional distribution characteristics. Tellurium content and water depth profile show the same radial and opposite latitudinal trends, indicating that the enrichment of Te is not only related to the depth of crust in seawater, but also related to the longitude and latitude, seamount topography, and regional metallogenic environment. The leaching results show that tellurium is mainly enriched in iron oxides and residues, and the oxygen-rich environment and biological action of phosphorylation play a decisive role in the enrichment of tellurium. Concerning the minimum industrial grade requirements for terrestrial associated useful elements, the tellurium content in cobalt-rich crusts of seamount samples in the Mid-West Pacific Ocean study areas meets the industrial grade requirements, which has potential development value. According to the estimation of cobalt-rich crust reserves, the tellurium reserves in cobalt-rich crusts in the Mid-West Pacific Ocean are more than
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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