Archipelagic Archives

2021 ◽  
Author(s):  
Yuriko Furuhata

Abstract This article examines the intertwined cultural politics of geology, mining, and archival media in the context of Japan’s development as an archipelagic empire. The first Japanese geological map (1876) was completed by American geologist Benjamin Smith Lyman, who surveyed mineral deposits in Hokkaidō, Japan’s northern island, long inhabited by the Indigenous Ainu people. Following decolonial and archipelagic thoughts, the author reads across earthly archives of geological strata and colonial archives of historical documents to elucidate the conceptual duality of archipelago as a geological formation and a geopolitical territory. In tracing this formative era of Japan’s resource extraction and settler colonialism, which precedes and informs the current rush to extract rare earth minerals necessary to maintain global digital infrastructures, this article aims to both de-Westernize the methodological orientation known as media geology and offer a prehistory of contemporary rare earth mining in the Pacific Ocean.

Minerals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 142
Author(s):  
Jelena Milinovic ◽  
Francisco J. L. Rodrigues ◽  
Fernando J. A. S. Barriga ◽  
Bramley J. Murton

The rare earth elements (REE), comprising 15 elements of the lanthanum series (La-Lu) together with yttrium (Y) and scandium (Sc), have become of particular interest because of their use, for example, in modern communications, renewable energy generation, and the electrification of transport. However, the security of supply of REE is considered to be at risk due to the limited number of sources, with dependence largely on one supplier that produced approximately 63% of all REE in 2019. As a result, there is a growing need to diversify supply. This has resulted in the drive to seek new resources elsewhere, and particularly on the deep-ocean floor. Here, we give a summary of REE distribution in minerals, versatile applications, and an update of their economic value. We present the most typical onshore methods for the determination of REE and examine methods for their offshore exploration in near real time. The motivation for this comes from recent studies over the past decade that showed ΣREE concentrations as high as 22,000 ppm in ocean-floor sediments in the Pacific Ocean. The ocean-floor sediments are evaluated in terms of their potential as resources of REE, while the likely economic cost and environmental impacts of deep-sea mining these are also considered.


2011 ◽  
Vol 4 (8) ◽  
pp. 535-539 ◽  
Author(s):  
Yasuhiro Kato ◽  
Koichiro Fujinaga ◽  
Kentaro Nakamura ◽  
Yutaro Takaya ◽  
Kenichi Kitamura ◽  
...  

Author(s):  
G. V. Novikov ◽  
N. V. Lobus ◽  
A. N. Drozdova ◽  
Yu. P. Dikov

Cobalt-rich manganese crusts and crust-concretion formations from the guyots of the Pacific Ocean were found to be the natural highly selective sorbents of rare-earth cations Ce3+, Y3+, La3+. Ion exchange capacity of ore minerals — vernadite, Fe-vernadite and Mn-ferroxyhyte — increases in the following sequence La3+<Y3+<Co2+<Ce3+ and averages from 1.67 (La3+) to 2.84 (Се3+) meq/g, which is quite high values among natural mineral ion exchangers. Ore minerals of crusts exhibit higher selectivity to Се3+ cation compared to Y3+ и La3+. The age of ore minerals does not affect their sorption with respect to rare earth element cations.


1972 ◽  
Vol 6 (2) ◽  
pp. 75-81 ◽  
Author(s):  
Toshinari Shimokawa ◽  
Akimasa Masuda ◽  
Kiyoaki Izawa

2001 ◽  
Vol 28 (19) ◽  
pp. 3721-3724
Author(s):  
Cathy Stephens

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