| | Journal (article/letter/editorial) | Huanggang Mine, Inner Mongolia, China T he first part of this column concentrated on the North and South...fluorite specimens, in particular those from the north of England. Writing in 1874 (Jenkinson 1874, p....been used for optical instruments. Twinning in north England fluorites is common and is normally of the...northern England, particularly from the Rogerley mine, has made these classic specimens available once...made of the complex crystals from the Trevaunce mine, St. Agnes. The crystals on the Smithsonian specimens | | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | Smithsonian Inst., Washington, D.C. Alan Pring: South Australian Museum, Adelaide, SA, Australia. Gunnar...Systematic Classification of Nonsilicate Minerals, Bull. Am. Mus. of Nat. Hist., Vol. 172, 1982, and Supplements)...tritomite-(Y) are end members [Ce+Y] in the tritomite series [AM 51:152(1966)]. Chemical prefixes are also employed...Identification of Ore Minerals, 2nd ed., Elsevier-North Holland, New York, 1971. The word “opaque” may also...10. India 11. South east Asia 12. Middle East 13. African Countries, from north to south 14. Oceania 15 | | | | surrounded ce ne white calcite, from!iheBluebell Mine; Riondel, Digitized by the Internet Archive...Precambrian, Shield constitutes the stable core of the North American con- tinent. These ancient rocks vary...Plains of the Midwest, the Arctic Lowlands to the north, and the Hudson Bay Lowlands which infills the...covered by urban sprawl. Appalachian Region In North America, the old, worn Appalachian Mountains stretch...coastline from Newfoundland to New York. Further south a flat plain of sedimentary rock separates them |
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