Dental Materials Journal 2011; 30(5): 700–706 INTRODUCTION Gypsum is a mineral composed of calcium sulfate dihydrate. Upon calcination of calcium sulfate dihydrate, the…

The graduation tower of Bad Kösen (Germany) â its history and the formation of thornstone H.-J. Engelhardt & L.E. von Borstel DBE TECHNOLOGY GmbH, EschenstraÃe 55,…

Chemical Additives Used in Gypsum Wallboard Author: Mr. Arpad Savoly GEO Specialty Chemicals, Inc. Ambler, PA 19002, USA Agenda • Wallboard manufacture • Landplaster…

Sedimentary Rocks Rock Cycle Sedimentary Rocks Fossil source rock Made from weathered and eroded igneous and metamorphic rocks Indicate past climates/environments Petroleum,…

Figure 1, p. 76 Atoms and Minerals Building blocks for Rocks and the Earth Geology- Study of the Earth Rocks - What are they made of? How do they form and change? What do…

Photo of Aruba's Boca Grandi beach by Kjersti Joergensen Though we very often take sand for granted, there are scientists called sedi­ mentologists who study it to…