Session: Gemological Research in the Twenty-First Century—Characterization, Exploration, and Geological Significance of Diamonds and Other Gem Minerals (Posters) (GSA Annual Meeting in Indianapolis, Indiana, USA

Session No. 110

Monday, 5 November 2018: 9:00 AM-6:30 PM

Halls J-K (Indiana Convention Center)

T113. Gemological Research in the Twenty-First Century—Characterization, Exploration, and Geological Significance of Diamonds and Other Gem Minerals (Posters)

Mineralogical Society of America; Gemological Institute of America; Society of Economic Geologists; GSA Mineralogy, Geochemistry, Petrology, and Volcanology Division

Authors will be present from 4:30 to 6:30 PM.

Paper #

Booth #

110-1

223

EVOLVING GROWTH CONDITIONS FOR WATERMELON TOURMALINE: ELEMENTAL ABUNDANCE PATTERNS TELL THE STORY

TOLLEFSON, Kyle T., Department of Geology & Geophysics, Louisiana State University, E235 Howe Russell Geoscience Complex, Baton Rouge, LA 70808 and IHINGER, Phillip D., Department of Geology, University of Wisconsin- Eau Claire, 105 Garfield Ave, Eau Claire, WI 54702

110-2

224

MOISSANITE AND DIAMOND FROM THE PRIMITIVE SHOSHONITE DIKE IN EASTERN FINNMARK (NORWAY): EVIDENCE FOR SUPERDEEP SLAB-MANTLE INTERACTIONS IN SUBDUCTION ZONES

KEPEZHINSKAS, Nikita¹, KEPEZHINSKAS, Pavel², FOSTER, David A.¹ and KAMENOV, George¹, (1)Department of Geological Sciences, University of Florida, 241 Williamson Hall, Gainesville, FL 32611, (2)PNK GeoScience, 9302 Brookhurst Court, Tampa, FL 33647

110-3

225

CUBO-OCTAHEDRAL GROWTH STRUCTURE IN A TYPE IB DOMINANT MIXED TYPE DIAMOND: A RARE DIAMOND FORMATION

MOE, Kyaw Soe, Gemological Institute of America, 50 W 47th Street, New York, NY 10036 and JOHNSON, Paul, Gemological Institute of America, New York, NY 10036

110-4

226

MAGMATIC FRAGMENTATION OF SAPPHIRE XENOCRYSTS IN A BASALTIC TRACHYANDESITE SILL NEAR HELENA, MONTANA

BERG, Richard B., Montana Bureau of Mines and Geology, Montana Tech, 1300 W. Park St., Butte, MT 59701

110-5

227

THE DESIGN AND IMPLEMENTATION OF A COMPUTER-VISION BASED INTELLIGENT SYSTEM FOR THE REFRACTION INDEX IDENTIFICATION OF GEMSTONES

SONG, Ying, Geology Dept., China University of Petroleum (East China), Qingdao, 266580, China

110-6

228

ISOLATING CHROMOPHORES IN PYRALSPITE GARNET – QUANTITATIVE DEFINITION OF STRENGTH OF CHROMOPHORES AND THEIR IMPACT ON COLOR CHANGE

SUN, Ziyin, PALKE, Aaron C. and RENFRO, Nathan D., Gemological Institute of America (GIA), 5355 Armada Dr, Carlsbad, CA 92008

110-7

229

UNRAVELING THE GEOLOGICAL MYSTERIES OF MONTANA'S SAPPHIRE DEPOSITS

PALKE, Aaron C.¹, BERG, Richard B.² and RENFRO, Nathan D.¹, (1)Gemological Institute of America (GIA), 5355 Armada Dr, Carlsbad, CA 92008, (2)Montana Bureau of Mines and Geology, Montana Tech, 1300 W. Park St., Butte, MT 59701

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GSA Annual Meeting in Indianapolis, Indiana, USA - 2018

T113. Gemological Research in the Twenty-First Century—Characterization, Exploration, and Geological Significance of Diamonds and Other Gem Minerals (Posters)