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Автор: Harris Martin
Дата: 27 Nov 1996

Cave diving, caving, and karst photographers,

The following was recently published in Vol. 23 No. 2 (winter 1996) edition of
GEO2, the newsletter of the Cave Geology and Geography Section of the (USA)
NSS.

The NSS Special Publications Committee invites cave photographers around the
world to submit their speleothem and cave mineral photos for use in the book
"Cave Minerals of the World."

Carol Hill (US) and Paolo Forti (Italy) are working on a revised and expanded
edition of their book "Cave Minerals of the World." This will be published by
the NSS and will come out mid-1997. Copies will first be available at the
International Congress of Speleology (UIS) in Switzerland next year.

Color photos (slides preferred but prints OK) are preferred over black and
white since this edition will have almost all color photos. The authors are
not just looking for the most beautiful mineral photos. They also want
pictures of unusual or unique subjects. They'd also like at least one photo
for every type and sub-type of cave mineral and would like to have as many
countries as possible represented in the book.

In North and South America, send slides (or prints) to:

David McClurg
104 Graves Ct.
Vallejo, California 94040
USA

In Europe, Asia, and Africa, send photos to:

Urs Widmer
Therwilerstrasse 43
CH-4054 Basel
Switzerland

If you have any questions or comments on cave minerals and want to reach the
authors directly:

Carol Hill


Paolo Forti


Now my comment.

None of the photos in the first edition of Cave Minerals of the World, included
underwater pictures.

The most common underwater (phreatic) speleothem is goethite (phreatite). Cave
diving photographers, please send David or Urs your best goethite photos
including notes as to place, time, etc. I'll send them some info on what
goethite is and how it might form in phreatic caves. Goethite has been seen in
underwater caves in Florida, Texas, Mexico, the Bahamas, and elsewhere.
Reports and photos of this phreatic speleothem from Europe, Australia, Asia,
and elsewhere would be quite useful.

The flooded vadose karst of Mexico's Yucatan (estada Quintana Roo) is a
particularly fertile field for unique photos. Anything unusual from Australia?

If there are other kinds of under water speleothems that you have pictures of,
whether you understand what they are or not, please send them in.

Harris Martin
NSS Underwater Cave Study Group
Greenville, Delaware, USA
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