Rocks & Minerals (67:06)
November/December 1992
FEATURES
380 Minerals of the Etta Pegmatite, Black Hills, South Dakota
Eric Fritzsch
390 The San Pedro Mine, Santa Fe County, New Mexico
Michael R. Sanders
396 Collections and Displays: Biology-Earth Sciences Museum, University of Waterloo, Ontario, Canada
Peter I. Russell
400 New Canadian Mineral Stamps Issued
Robert A. Gault
402 Hercynite Crystals from the Kimzey Calcite Quarry, Magnet Cove, Arkansas, and Their Distinction from Perovskite
William A. Henderson, Jr., Arthur E. Smith, Jr.
405 Indian Trail Caverns: A Window on Ohio’s Pleistocene Bestiary
Michael C. Hansen
410 Rock Chips : How Are Natural Bridges Formed:?
R. Dirk Titamgim
416 Spotlight on Juniors: Innovative Partnerships for Earth-Science Education in Philadelphia
Susan Glassman, Eugene Bolt, Robert Middleton
418 In Memoriam: Josephine Louise Scripps (1910-1992)
Bill Larsen
DEPARTMENTS
373 Chips from the Quarry
375 Letters
377 Geo-Currents
Jane M. Matty
420 Media Reviews
Robert M. North, Willow Wight
423 Museum Notes and Announcements
425 Coming Events
428 Classified Advertisements
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