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| 981–1004 Archean Komatiitic Sill-hosted Chromite Deposits in the Zimbabwe Craton M. D. PRENDERGAST † Guesachan... United Kingdom Abstract Lenticular chromite deposits of widely varying age, metamorphic grade and strain...form three groups: (1) early Archean (3.5–3.2 Ga) deposits associated with amphibolite grade greenstone remnants...Marginal zone (e.g., Inyala, Rhonda); (2) mid-Archean deposits within the ca. 3.0 Ga Shurugwi Group in the main...other belts; and (3) late Archean (ca. 2.74 Ga) deposits mostly in the western segment of the Masvingo |
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| deposit, but it was probably very small; placer deposits probably associated with mafic diorite-quartz...stone over the past 10 years (USGS MF-655K). Other deposits of jade in the ultramafic rocks of the quadrangle... Alaska Resource Data File NB006 Site name(s): Unnamed Site type: Occurrence ARDFno.: NB006 Quadrangle:... Alaska Resource Data File NB007 Site name(s): Unnamed Site type: Occurrence ARDFno.: NB007 Latitude:...Reserves: Additional comments: See other volcanogenic deposits in Nikolai Greenstone: (NB033, 054, 055). References: |
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| Placer Deposits of Alaska By EDWARD H. COBB GEOLOGICAL SURVEY BULLETIN 1374 An inventory of the...geology In pocket 1. Map showing location of placer deposits in the Alaska Peninsula region ____________________...__________ 4-16. Maps showing location of placer deposits: 4. Bristol Bay region _______________ 5. Cook...FIGURES 4-16. Maps showing location of placer deposits Continued: 11. Kodiak region _ _ -12. Aniak district..._ _____ 18-28. Maps showing location of placer deposits: 18. Northwestern Alaska region _ 19. Seward Peninsula |
 | Henley, H. F., Brown, R. E., Brownlow, J. W., Barnes, R. G., Stroud, W. J. (2001) Grafton-Maclean Metallogenic Map (SH/56-6, SH/56-7) Metallogenic Study and Mineral Deposit Data Sheets. Geological Survey of New South Wales | Report (issue) |
| framework for the more than two thousand mineral deposits and occurrences which occur in the map sheet area...and Lionsville) and epigenetic granite-related deposits. Serpentinised mafic and ultramafic rocks in a...Baryulgil are host to podiform chromite and asbestos deposits and occurrences. Extensive plutonism and coeval...and gold skarn deposits and fractionated members of this Suite have potential for deposits which include...pervasive alteration-associated disseminated gold deposits in the Poverty Point–Timbarra area may be a similar |
 | Eppinger, R.G., Winkler, G.R., Cookro, T.M., Shubat, M.A., Blank, H.R., Crowley, J.K., Kucks, R.P., Jones, J.L. (1990) Preliminary assessment of the mineral resources of the Cedar City 1 degree x 2 degrees Quadrangle, Utah. Open-File Report Vol. 1990 (90-34) US Geological Survey doi:10.3133/ofr9034 | Report (issue) |
| from the Apex mine in the Tutsagubet district. Deposits of uranium, coal, and oil and gas are numerous...two known geothermal resource areas, as well as deposits of sand and gravel, volcanic ash and cinders,...control on types and locations of mineral and energy deposits formed. The geologic record indicates four main...precious-metal vein and disseminated deposits, and possible porphyry deposits at depth. This study of the Cedar...sediment-hosted Cu-Ag-U, placer, and iron skarn deposits. In addition, some drawbacks and limitations to |
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| Ultramafic and Related Rocks Silurian Granitic Rocks Unnamed Silurian Volcano-sedimentary Sequence at Harts...MINERAL DEPOSITS INTRODUCTION ...•. ...•......... Deposits in the Girilambone Group Deposits Related...Related to Ultramafics Deposits Related to Silurian Granitoids Deposits in Unnamed Silurian Volcano-sedimentary...Volcano-sedimentary Sequence Deposits in the Cobar Supergroup Deposits in shelf sequences Deposits in deep-water sequences...sequences Surficial Deposits Industrial Minerals and Rocks DEPOSITS IN THE GIRILAMBONE GROUP ....... |
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| Pleistocenemarine deposits S J Mathers and RJ O Hamblin Introduction l l 0 Pre-Anglian marine deposits l l 0 Structure...l 2 Lithostratigraphy l 15 Post-Anglian marine deposits l 28 Thomas 8 18 32 81 l l0 iv 9 Pleistocene...Introduction l 30 Preglacial fluvial deposits 130 Post-Anglianfluvial deposits 140 J Rose 130 10 Pleistocene...Pleistoceneglaciations Late Pleistoceneglacial deposits 163 Glacial stratigraphy 163 Periglacial phenomena...coastal sediments 182 Alluvial tracts l 84 Aeolian deposits 184 12 Quaternarymammals DC Schreve 187 Early |
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| The deposit is well-known belt of quicksilver deposits of rather closely related to the western Nevada...the California Coast Ranges, but it is belt of deposits. The ore, which contains cinnabar as the only...belt of deposits in the California Coast Ranges. It is the southernmost of several deposits and occurrences...Walibu deposit is clearly more closely related to deposits lying along the belt extending northward through...Oregon than to the more productive Coast Range deposits. 1 Gillan, S. L., Cinnabar in the Sierra 79 |
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| Merrill 91 Geologic Investigation of the Chromite Deposits of California, by John 101 Eliot Allen SPECIAL...report reviewing in detail the mines and mineral deposits of the various counties. As a progressive step...good weather. The best of the small-scale placer deposits were worked out by the end of 1853. The white...limestone, manganese, marble, mineral paint, A A A deposits of the Redding and Weaverville quadrangles: Report...years ago an attempt was made to work one of these deposits, and machinery was installed, but the operation |
