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In the late 1980s, the only mineral exploited in Chad was sodium carbonate, or natron. [1] Also called sal soda or washing soda, natron was used as a salt for medicinal purposes, as a preservative for hides, and as an ingredient in the traditional manufacture of soap; herders also fed it to their animals. [1]
The geology of Chad includes an area of metamorphic rocks of Precambrian age surrounding the Chad Basin which is floored with Tertiary and Quaternary sediments.There are Precambrian rocks in the Tibesti Mountains in the north and the east while in eastern Chad are basement rocks, some of which extend into Darfur in neighbouring Sudan.
1926, around 1,500 mineral species were firmly established at that time, the Roebling mineral collection (nowadays at the National Museum of Natural History, Smithsonian Institution, Washington, DC) lacked less than 15 of those (Colonel Washington A. Roebling (1837–1926), founding member of the Mineralogical Society of America).
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2 French colony of Chad. 3 19th century. 4 18th century. ... View history; General What links here; ... Printable version; In other projects
The 23rd edition is now in print under the title Manual of Mineral Science (Manual of Mineralogy) (2007), revised by Cornelis Klein and Barbara Dutrow. Equally influential was Dana's System of Mineralogy, first published in 1837, which has consistently been updated and revised. The 6th edition (1892) [27] being edited by his son Edward ...
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The Doba Basin is a sedimentary basin located in Chad and is part of the Central African rift system. This basin contains up to 10 km of non-marine sediments which record the complex tectonic and climatic evolution of the region from the Early Cretaceous Period to the present. These basins were originally identified using gravity data, but ...