Now showing items 1-6 of 6
Rhombohedral vs. Prism Sector Zones in Hydrothermal Quartz Crystals : Implications for Growth Dynamics
Gemmy hydrothermal quartz crystals typically exhibit each of their six prism and six rhombohedral crystal faces. However, discerning which of the crystal faces were actively growing at any given time during construction ...
Fossilpedia™ : Geospatial Data Curation and Mapping of Fossils from the Hell Creek Formation in South Dakota
The lack of accurate, consistent, and precise data collection of exhumed fossils has been a major obstacle to developing consistent inferences and conclusions based on paleontological work. We have developed and designed ...
Characterization of 18th Century French Glass Trade Beads from Fort Mackinac, MI : Chemistry and Infrared Spectroscopy
Glass trade beads made in Europe were an important commodity in colonial North America. The style and composition of glass beads were unique to each manufacturing site and can be used today to trace trading relationships ...
Characterization of 18th Century French Glass from Saint-Nicolas-des-Biefs, Auvergne-Rhone-Alpes, France : Chemistry and Infrared Spectroscopy
Glass beads manufactured in Europe were brought to North America and used in trade with native American peoples. The style and composition of glass beads can be used to trace intercontinental connections between the 16th ...
Experimental Study of Hydroxyl Stretching in Aluminosilicate Glass Cooled from High Temperature at Variable Quench Rates
The physical properties of natural silicate magma are strongly influenced by the dissolution of water into the aluminosilicate melt framework. Of note is the presence of hydroxyl species (X-OH) that break apart the rigid ...
Role of Liquid Immiscibility and Sequential Extraction in the Evolution of the Bushveld Layered Mafic Intrusion, RSA
The Bushveld layered mafic intrusion is the world’s largest magmatic body and hosts much of the known platinum, chromium, titanium, and vanadium reserves. The origin and magmatic evolution of the intrusion is still the ...