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Page 5203, results 130051 - 130075

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Garnet peridotites from Williams kimberlites, north-central Montana, U.S.A
B.C. Hearn, E. S. McGee
1983, Open-File Report 83-172
Two Williams kimberlites, 250x350m and 37x390m, in the eastern part of a swarm of 30 middle Eocene alnoitic diatremes in north-central Montana, USA, contain xenoliths of garnet-bearing lherzolites, harzburgites and dunites, in addition to spinel peridotites and upper and lower crustal amphibolites and granulites. Colluvial purple, red, and pink garnets...
Analyses and descriptions of geochemical samples from the Rich Mountain Roadless Area, Fannin and Gilmer counties, Georgia
C.M. Sears, M. P. Foose, G.W. Day, M.S. Ericksen
1983, Open-File Report 83-658
Semi-quantitative spectrographic analyses for 31 elements on rock, soil, fine-grained stream sediment, bulk stream sediment, and panned stream sediment samples collected in the Rich Mountain Roadless Area, Fannin and Gilmer Counties, Georgia, are reported here. Atomic absorption analyses for gold and fluorometric analyses for uranium are also reported. Brief descriptions...
Geological and geochemical studies in the Wadi Bidah District, Kingdom of Saudi Arabia
C. W. Smith, B.C. Waters, M. Naqvi, R. G. Worl, A. M. Helaby, V. J. Flanigan, H.S. Sadek, R.M. Samater
1983, Open-File Report 83-672
Geological and geochemical followup studies of airborne electromagnetic anomalies in the Wadi Bidah district, southwestern Saudi Arabia, did not reveal metals of economic grade. Investigation of an anomaly enclosing the Rabathan ancient mine disclosed tightly folded and sheared Proterozoic tuffaceous rocks interlayered mostly with chert, dolomite, carbonaceous rocks, and volcanic...