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What We Do: Preparation
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Without a doubt, Black Hills Institute of Geological Research is known worldwide for the finest fossil preparation that has ever been done. It is our understanding of the fossil and its matrix, our many years of experience, our innovative techniques, and the use and knowledge of the appropriate tools and equipment that helps make the Institute the preparation leader in the paleontological world. Often the details uncovered by our preparators give exciting clues to the life and death of the animal. |
- Field Work |
It is necessary to continue the stabilization process during all phases of preparation. Our staff uses several different viscosities of cyanoacrylates (Paleo Bond adhesives) and PVA (polyvinyl acetate) for this purpose. After nearly 25 years of use, the Institute is convinced that cyanoacrylate glues have the best strength and are the longest lasting of any glues available for fossil preparation. PVA is also used in conjunction with these glues by our technicians for stabilization and as a final finish (sealant) on most fossils. At times, fossil bones that have been crushed under the weight of the sediments in which they are buried, must be taken apart to restore them to their original shape. The airbrade and diamond tools are used for this purpose. Occasionally fossil bones contain unstable pyrite which must be removed as completely as possible before the fossil is ready for display. Our preparators have worked on many fossils that contain unstable pyrite. The Institute uses sodium bicarbonate in the airbrade and other tools to remove the pyrite. Bones are then soaked with Paleo Bond penetrant and a final sealing coat of PVA. Ten years after receiving this treatment, these fossils show no additional deterioration. |
Media
STAN T. rex page - Check out the slide show on STAN's preparation and mounting. CLAWS Struthiomimus page - Check out the slide show. |
The determination of what is restored can usually be seen by shining a black light on the fossil. Since restoration does not fluoresce and the fossil does, it is then possible to see what has been restored. |
Supplies
Fossil preparation and field work supplies. - Featuring Estwing brand picks and hammers, X-acto® knives and PVA stablizer. |
X-acto® is a registered trademark of the Hunt Company. Comco is a trademark of Comco, Inc - Paleobond is a trademark of Uncommon Conglomerates, Inc.
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