Enrichment of scandium also occurs in aluminum phosphate minerals, beryl, cassiterite
, columbite, garnet, muscovite, rare-earth minerals, and wolframite.
Almost 30 years after the first publication, an archaeometallurgy survey has been conducted by the authors documenting the sources and occurrences of tin in Turkey; the highland tin-production model has now been extended to include the Hisarcik-Kiranardi, Kayseri Erciyes area north of the initial discovery of cassiterite
reported in the Taurus range.
Rwanda's local factory, Phoenix Metals LTD, has started smelting cassiterite
into tin, a move that will enhance the country's revenue collections from mineral exports.
Minerals such as cassiterite
, coltan and wolfram are a growing part of Rwanda's economy, partly due to ongoing reforms and substantial investments in the sector--Rwanda invested $46.
5kg bag of cassiterite
, dug from the ground by a local miner here and tagged by a government representative, made the Punia mine the latest in a growing number of sites indoctrinated in the iTSCi conflict-free mineral traceability and due diligence program.
Along with gems and other precious metals, the DRC has a rich supply of gold, cassiterite
, wolframite, and coltan.
The mineralisation consists of chalcopyrite, cassiterite
, sphalerite, pyrite, and arsenopyrite, and is essentially stratiform, dipping to the northwest at about 30 degrees.
The term "conflict minerals" refers to several highly lucrative and commonly mined metallic ores including coltan, wolframite, and cassiterite
, all of which are refined into precious metals (tantalum, tungsten, and tin, respectively) that form essential components of cell phones (Mineral Information Institute, 2010).
The source of the low levels of Sn (10s of ppm) in the till could be rare cassiterite
grains in the mineralization, though no cassiterite
or any other Sn-bearing minerals have been seen in the Sisson deposit rocks used in this study or in any other studies of the deposit.
Mined largely in the DRC under questionable human rights standards, wolframite, cassiterite
, coltan and gold are then processed for the manufacture of electronic components found in cellphones around the world.
The Togo Sub's Dapaong Gold Project in Northern Togo and its Benin branch, which has applications in for Coltan and Cassiterite
are not included in the Combined Transaction and will remain 100% owned by Premier.
Nigeria is also endowed with variety of solid minerals ranging from coal, cassiterite
and columbite in the southern region to limestone, iron ore, tin and marble in the northern region.