Abstract
There has recently been discovered in New Mexico a deposit of the English type of kaolin which is of more than ordinary interest. These beds are located in Township 21 South, Range 3 East, Dona Ana County, and occur about fifty miles north of El Paso, Texas. The deposits are of the residual type and have been formed through the chemical process of decomposition of feldspathic materials and leaching. They do not outcrop naturally but occur in the upper workings of a mine at one time worked for metalliferous minerals. The present estimated depth is from 150 to 200 feet from the surface. The kaolin is massive and white in color. Tunnels of great length have been driven through it and it stands in remarkable fashion. For the most part the kaolin appears to have been formed similarly to the deposits in England. It is imminently plastic and fine in grain and due to its extreme whiteness is suitable for paper filler. Tests which have been made show it to have admirable working qualities, comparable with the imported English variety.
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