Natural zeolites are a unique type of microporous volcanic ash with sieving and cation exchange properties for use in agriculture, environmental and industrial applications. The largest natural zeolite producer in North America is St Cloud Mining Company. A subsidiary of the Goldfield Corporation, established in 1906 and traded on the American Stock Exchange.
The zeolite operations are located at the St Cloud Mill Site near Winston, New Mexico 87943 approx. 35 miles west of I-25 midway between Albuquerque, New Mexico and El Paso, Texas. St Cloud has an 18.3 million ton zeolite reserve base mined from surface exposures 1.5 miles from the plant site.
St Cloud is a modern 500 ton per day processing plant with laboratory, crushing, drying, sizing, packaging, warehousing, administrative support and shipping facilities. Amended, cation, exchanged, modified, coated, blended, or other speciality zeolite materials are also produced. All mining and processing operations are conducted on private property and are in compliance with regulatory and enviromental services.