Bauxite

Bauxite, an aluminium ore, is the world's main source of aluminium. It consists mostly of the minerals gibbsite Al(OH)3, boehmite γ-AlO(OH) and diaspore α-AlO(OH), mixed with the two iron oxides goethite and haematite, the clay mineral kaolinite and small amounts of anatase TiO2. In 1821 the French geologist Pierre Berthier discovered bauxite near the village of Les Baux in Provence, southern France. In 1861, French chemist Henri Sainte-Claire Deville named the mineral "bauxite".

Formation

Lateritic bauxites (silicate bauxites) are distinguished from karst bauxite ores (carbonate bauxites). The carbonate bauxites occur predominantly in Europe and Jamaica above carbonate rocks (limestone and dolomite), where they were formed by lateritic weathering and residual accumulation of intercalated clay layers – dispersed clays which were concentrated as the enclosing limestones gradually dissolved during chemical weathering.

The lateritic bauxites are found mostly in the countries of the tropics. They were formed by lateritization of various silicate rocks such as granite, gneiss, basalt, syenite, and shale. In comparison with the iron-rich laterites, the formation of bauxites depends even more on intense weathering conditions in a location with very good drainage. This enables the dissolution of the kaolinite and the precipitation of the gibbsite. Zones with highest aluminium content are frequently located below a ferruginous surface layer. The aluminium hydroxide in the lateritic bauxite deposits is almost exclusively gibbsite.

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Amazon identified as tenant of Bauxite I data center project on former Alcoa Eastalco site

Frederick News-Post 26 Apr 2025
Amazon Web Services will be the tenant for the first of three data center projects being developed by the Colorado-based Rowan Digital Infrastructure on the former Alcoa Eastalco Works site near Adamstown ... .
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Hometown Malvern Soccer: MHS host Bauxite in conference match-ups

Malvern Daily Record 19 Apr 2025
MALVERN — The hometown Malvern Leopards and Lady Leopards fell short in conference soccer match-ups hosting Bauxite Thursday at Leopard Stadium ... .
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Geomega and Rio Tinto provide update on bauxite residue valorization pilot (GeoMegA Resources Inc)

Public Technologies 16 Apr 2025
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Geomega and Rio Tinto provide update on bauxite residue valorization pilot

Nasdaq Globe Newswire 16 Apr 2025
MONTREAL, April 16, 2025 (GLOBE NEWSWIRE) -- Geomega Resources Inc. (“Geomega” or the “Corporation”) (TSX.V. GMA) is pleased to provide an update on the bauxite residue valorization activities, done in collaboration with Rio Tinto ... .
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Diamond Leopards hang tough in first conference loss to Bauxite

Malvern Daily Record 15 Apr 2025
MALVERN — The hometown Malvern Leopards went the distance for the seventh inning duel hosting Bauxite Miners for the first of two league season match-ups on the diamond Friday in baseball action at Leopard Yard ... .
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Lady Wampus Cats come up short against Bauxite

Log Cabin Democrat 15 Apr 2025
The Conway Lady Wampus Cats dropped an 8-7 decision to Bauxite on Monday afternoon ... .
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BRE Unlocks Advanced High Grade Bauxite Gallium Project (Brazilian Rare Earths Ltd)

Public Technologies 14 Apr 2025
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Bitcoin and Bauxite in the Rainforest

BitRSS 11 Apr 2025
In Suriname, presidential candidate Maya Parbhoe promises to introduce a Bitcoin standard. Since then, the Caribbean country has been considered a hidden gem among Bitcoin nations, as the next true El Salvador. We took a look on the ground... .
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Noranda Bauxite gifts land for construction of taxi car park in Discovery Bay - Jamaica Observer

Jamaica Observer 11 Apr 2025
KINGSTON, Jamaica \u2014 Noranda Bauxite has donated lands in Discovery Bay, St Ann for the construction of a long-awaited car park for taxi operators.
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Ghana Bauxite Company aims to produce 6 million tons of bauxite by end of 2025

Yieh Corp 10 Apr 2025
Ghana Bauxite Company has announced its goal to achieve six million tons of bauxite production by the end of 2025, ...
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Ghana Bauxite invests US$122.97m

B & FT Online 10 Apr 2025
Ghana Bauxite Company Limited (GBC) has set an ambitious target of producing 6 million tonnes of bauxite by the end of 2025 ... GBC has been operating the Inchiniso pit since 1969, producing high-grade trihydrate bauxite annually.
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