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ABOUT THE COVER: Sphalerite with pyrite and calcite, Portland mine, Ouray County, Colorado. Specimen 1.5 x 2 inches. Barbara Muntyan specimen, Jeff Scovil photo. See related article on sphalerite from Colorado beginning on page 220.
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| | Rocks & Minerals (74:04)
July/August 1999
FEATURES
220 Colorado Sphalerite
Barbara L. Muntyan
236 Minerals of the Gouverneur Talc Company No. 4 Quarry (Valentine Deposit), Town of Diana, Lewis County, New York
Steven C. Chamberlain, Vandall T. King, Donald Cooke, George W. Robinson, Wayne Holt
250 Connoisseur's Choice: Manganite, llfeld, Harz, Germany
Robert B. Cook
254 Minerals of a Wausau Pegmatite, Marathon County, Wisconsin
Thomas Buchholz
260 Dinosaur Artist Phil Wilson (b. 1948)
Susan Robinson
263 Some Observations (and Tips) on Exhibiting
Susan Robinson
266 Rock Chips: Carbonate Concretions, Part 1
R. V. Dietrich
271 In Memoriam: Richard Venable Gaines (1917–1999)
Abraham Rosenzweig
275 Media Reviews
John S. White, Dale M. Gnidovec, Joel E. Arem, Jordan K Sawdo, Virgil W. Lueth
DEPARTMENTS
211 Chips from the Quarry
215 Letters to the Editor
218 Geo-Currents: Earth's Mantle
Jane M. Matty
280 Museum Notes & Announcements
282 Internet Directory for the Earth Sciences
285 Coming Events
287 Classifieds
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