Rocks from Bob's Collection

Quartz Peppered with Hematite from Mexico

Fluorite Cubes with Sphalerite from Deardorff Mine at Cave-in-Rock, Illinois

Halite Crystal with Free Sodium Ions from Utah

Aragonite Clusters from Somewhere

Blue Barite with Chalcopyrite from Mexico

Yellow Wulfenite from Level 6 Ojuela Mine at Mapimi, Durango, Mexico

Hemimorphite from Level 16 El Potosi Mine at Sanata Eulalia, Chihuahua, Mexico

Adamite from Ojuela Mine at Mapimi, Durango, Mexico

More Adamite from Ojuela Mine at Mapimi, Durango, Mexico

Salt and Pepper Calcite Crystals from Loc-Ketkipada-Bombay, India

Gray Calcite Crystals from El Potosi Mine at Santa Eulalia, Chihuahua, Mexico

Gypsum Cross from Angrevillers, Essonne, France

The images of specimens from Bob's collection were acquired with relatively inexpensive NTSC video frame-grabbing equipment and techniques. The Shop's frame grabbing FAQ is available for the financially challenged or simply curious.

You're welcome to browse more of Bob's collection in the shop's backroom. You'll just want to keep the racket down so you don't arouse our guard dog.

More Rocks from Bob's Collection

Index of Specimen Images

Table of Contents

Bob Keller 7/2/95