Ward's Natural Science Establishment, Inc.
P.O. Box 92912
Rochester, NY 14692-9012
Phone: 800-962-2660
FAX: 800-635-8439
Ward's Natural Science Establishment
Web site
Source of a variety of mineral standards and teaching aids.
The Clay Minerals Society maintains a Source Clay Repository containing
two series of materials, the Source Clays and the Special Clays.
The list of available clays is posted at the Clay
Minerals Society web site.
In addition to these two sources, many companies that mine and/or sell
natural zeolites are listed on the INZA
page devoted to WWW links of interest.
Minerals Research, probably the best source
of natural zeolites, including a variety of clay and zeolite hand and reference
samples and tetrahedral models of zeolites, unfortunately is no longer
in business.
Fred Mumpton will be missed by all.