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The niobium-dominant mineral in coltan is columbite (after niobium's original American name columbium), and the tantalum-dominant mineral is tantalite. [1] Tantalum from coltan is used to manufacture tantalum capacitors which are used for mobile phones, personal computers, automotive electronics, and cameras. [2]
This is a list of minerals which have Wikipedia articles. Minerals are distinguished by various chemical and physical properties. Differences in chemical composition and crystal structure distinguish the various species .
List of countries by number of mobile phones in use; List of Huawei phones; List of iPhone models; List of large sensor camera phones; List of LG mobile phones; List of mobile phone brands by country; List of mobile phones with a high refresh rate display; List of mobile phones with FWVGA display; List of mobile phones with WVGA display; List ...
Coltan is the colloquial name for the mineral columbite-tantalum ("col-tan"). In the early 21st century coltan mining is associated with human rights violations such as child labour, systematic exploitation of the population by governments or militant groups, exposure to toxic chemicals and other hazards as a result of lax environmental protection, and general safety laws and regulations. [1]
Dating columbite minerals is primarily completed by uranium lead (U-Pb) dating, a slow process. Columbite has the same composition and crystal symmetry (orthorhombic) as tantalite. [6] In fact, the two are often grouped together as a semi-singular mineral series called columbite-tantalite or coltan in many mineral guides
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9.1 New Cell Phones Smartphone. 10 V & Q Series. 11 G Series. Toggle G Series subsection. 11.1 Models that end with GO. 11.2 A series. ... Too indiscriminate list, ...
The University of California Santa Barbara published a study in 2010 on the subject called, "Economics of Cell Phone Reuse and Recycling" that states the value of reused and recycled cell phones. In 2006, according to the study the average cost for U.S. cell phone refurbishers ReCellular , PaceButler and RMS was $2.10 while the average revenue ...