Results 191 to 200 of about 220,175 (263)
Contributions to Mineralogy and Petrology, 1994 Dolerite dykes that cut Tertiary baslats near the Skaergaard intrusion, East Greenland, are extensively altered to metasomatic assemblages indicating large scale mobilisation of calcium and alkalis. The alteration is characterised by replacement of the dolerite by prehnite together with lesser amounts of epidote, amphibole, salite, titanite, calcite ...
N. M. Rose, D. K. Bird
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, 1987 Two types of hydrothermal alteration can be recognized in a biotite granite of Variscan age in Northern Switzerland. The first is related to the intrusion of the granite and lead to the replacement of K-spar and biotite by muscovite, of plagioclase by sericite and calcite and to a chloritization of biotite. This process affected the granite as a whole.
T. J. Peters
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Metasomatism in Iceland: Hydrothermal Alteration and Remelting of Oceanic Crust
, 1987 The geochemistry of Icelandic volcanics, especially as pertains LIL-elements, RE-elements, and isotopes, has in the literature called for explanations involving heterogeneous mantle source. These explanations are shown to be incompatible with the data at hand.
S. Steinþórsson +3 more
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Mineralogy and Petrology, 1987 Homogenization temperatures and salinity data are documented for fluid inclusions present in quartz from a Palaeozoic alkaline to peralkaline granite intrusion. A wide range of salinities (3.8 to 60.6 wt% NaCl equivalent) and homogenization temperatures (25.8 to 537 °C) indicates a sequential entrapment of different fluids, whereby the detected ...
Bernd G. Lottermoser
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Contributions to Mineralogy and Petrology, 2022 Chen Ji, Kai‐Jun Zhang, Lilong Yan
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The Role of Hydrogen - Metasomatism in the Hydrothermal Kaolin Occurrences, Gönen, Western Turkey
Key Engineering Materials, 2004 Ş. Ali Sayin
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, 2016 The low-temperature hydrothermal alteration of certain rare-metal minerals is recorded in a quartz-epidote metasomatite from the Tsakhirin Khuduk occurrence in the Khaldzan-Buragtag Nb-REE-Zr deposit, Mongolian Altai. A peralkaline granitic pegmatite was
Bogusław Bagiński +4 more
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