1. Mineral agate By Mary Nelson 2. Chemical Composition=SiO2Group=QuartzCrystalline makeup= Hexagonal 3. Uses 4. Properties Fracture= conchoidal- curved breakage Streak=…

Slide 1Smoky Quartz brownish-yellow glassy crystal point hardenss = 7 Moonstone white, grey, orange dull/pearly box-like faces hardness = 5 Apache Tear black obsidian dull…

1.Arsenic2. Brief History of ArsenicDiscovery History is convoluted Not sure who first discovered Greeks and Romans had slaves mine for arsenic Used in Alchemy…

1. Identify theGeorgia Minerals © Copyright 2006.  M. J. Krech. All rights reserved. 2. 1. What is this mineral? Properties : Color: white or colorless Hardness: 3 - 3.5…

Slide 1Mineral Portfolio Mineralogy, EASC 200 Fall, 2007 Montana State - Billings Casey Heisler *referred to Wikipedia for some information Slide 2 Layout of Presentation…

Slide 1Mineral Groups Slide 2 All others: 1.5% Element Abundances Silica (SiO 4 ) 4- SILICATES Common cations that bond with silica anions Mineral Groups Slide 3 Ferromagnesian…

Mineral Groups Mineral Groups All others: 1.5% Element Abundances Silica (SiO4)4- SILICATES Common cations that bond with silica anions Mineral Groups 2 Ferromagnesian Silicates…