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exogreisen

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Journal Article
Journal: Economic Geology
Published: 01 May 1989
Economic Geology (1989) 84 (3): 551–574.
...), replaced dolomite (exogreisen), mineralized hydrobreccias, thin veins, and alluvials.Greisen-style alteration of porphyry dikes is zoned inward and downward from nearly fresh beta -form quartz + K-feldspar dike material through muscovite + fluorite + or - tourmaline greisen and topaz + quartz greisen...
Series: Economic Geology Monograph Series
Published: 01 January 1997
DOI: 10.5382/Mono.09.15
EISBN: 9781629490045
... known to include several deposit types found elsewhere, including alluvial placers, tin-and silver-rich veins, quartz-cassiterite veins, skarns, exogreisens, roof greisens, and deeper seated sheeted greisens. Pyrrhotite-rich replacements of carbonate rocks have not been identified but are possible...
Journal Article
Published: 01 June 2007
The Canadian Mineralogist (2007) 45 (3): 485–496.
... as inclusions in arsenopyrite or as disseminated grains in the mineralized rocks and exogreisens ( Fig. 2b ). F ig . 2. Photomicrographs of sphalerite included in arsenopyrite. (a) Inclusions of In-rich red sphalerite (transmitted, plane-polarized light). (b) Inclusions of In-poor yellow sphalerite...
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