In case anyone is interested in reading about the geyserite specimen displayed in the Smithsonian Natural History Museum in Washington and where it might have come from, take a look at: http://www.yellowstonetreasures.com/mystery_cone1.htm. The title of my small research project is: "The Mystery of a Yellowstone Rock in the Smithsonian." If anyone has further clues to the mystery, I would certainly like to know about them. Below is what it looks like. Janet Chapple -------------- next part -------------- A non-text attachment was scrubbed... Name: Smith'n_cone_forGOSA.jpg Type: image/jpeg Size: 61155 bytes Desc: not available URL: </geyser-list/attachments/20060920/c7123c7b/attachment.jpg>