Alibaba.com offers 21 coltan colombia products. About 42% of these are other ore, 19% are rare earth & products, and 14% are other metals & metal products. A wide variety of coltan colombia options are available to you, There are 9 coltan colombia suppliers, mainly located in South America. The top supplying country is Colombia, which supply 100% of coltan colombia respectively. Coltan colombia products are most popular in North America, South America, and Eastern Europe.