Results 51 to 60 of about 7,811 (229)
Frontiers in Earth Science, 2021 The giant Gejiu Sn–Cu polymetallic ore deposit is one of the largest Sn producers in the world, and is related in time and space to highly evolved S type granitic intrusion. The mineralization processes can be divided into four stages: (I) skarnization; (
Yongqing Chen +3 more
doaj +1 more source
Textural and mineral-chemistry constraints on columbite-group minerals in the Penouta deposit: evidence from magmatic and fluid-related processes [PDF]
, 2018 The Penouta Sn-Ta deposit, in the northwest of Spain, is a greisenized granitic cupola where Ta minerals occur mainly as disseminations in a leucogranite body intruded in Precambrian–Lower Cambrian gneisses and mica-schists. This leucogranite is a medium-
Alfonso Abella, María Pura +11 more
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Journal of the American Ceramic Society, Volume 109, Issue 2, February 2026.The abnormal expansion associated with the simultaneous synthesis and sintering of Zn2SnO4 from ZnO and SnO2 is due to the reaction mechanism and correlated with the conversion. This phenomenon opens the way to manufacture porous ceramics without the addition of pore generators, simplifying the process, and especially the thermal treatment.
María José Orts +3 more
wiley +1 more source
Genetic aspects of Sn, Li, Be, Nb-Ta pegmatites and Sn-W vein deposits of the Damaran orogeny, Namibia [PDF]
Bulletin of the Geological Society of Finland, 1987 The pegmatites of the Northern, Central and Southern tin belts of the Damaran orogeny, which contain tin, lithium, beryllium and niobium-tantalum mineralizations, belong to the Abukuma low pressure metamorphic facies series, or to the intermediate-level ...
J.T. Ollila
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Contact Metamorphism in Southern California [PDF]
, 1954 A highly condensed introduction to "Contact metamorphism in southern California" is obviously not the place in which to indulge in semantic niceties nor to engage in terminological tussles, and thus the title is not intended to reflect a carefully ...
Campbell, Ian
core
Geoscience Data Journal, Volume 13, Issue 1, January 2026.We build a new, open‐source global copper deposit dataset (GCDD), facilitating AI‐driven data analysis for exploration targeting and improving our understanding of copper mineralizing systems and their mappable expressions. The GCDD hosts information about 1483 copper deposits worldwide, capturing key deposit attributes such as location, genetic type ...
Bin Wang +2 more
wiley +1 more source
Руды и металлыBased on the study of rutile and cassiterite grains, using Fourier transform infrared microscopy, a new method for their determination in heavy mineral concentrate samples has been developed.
Khachatryan G. K., Anashkina N. E.
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Redox behavior of tin in aluminosilicate melts: Implications for the fining process
International Journal of Applied Glass Science, Volume 17, Issue 1, January 2026.Abstract Aluminosilicate glasses are widely used in everyday applications and can be seen as building blocks of modern technology, from display screens to glass‐ceramics. However, due to their high viscosities, gas bubbles can only be removed from aluminosilicate melts at high temperatures, leading to significant energy costs.
Adrien Donatini +4 more
wiley +1 more source
Minerals in Afghanistan : the potential for copper [PDF]
, 2006 There are around 300 documented copper deposits, occurrences and showings in Afghanistan as shown in Figure 1. A variety of styles of copper mineralisation occur in rocks ranging in age from Proterozoic to Neogene.
Benham, Antony John, Coats, Stan
core
Bronze production in the Iron Age of the Iberian Peninsula: The case of El Castru, Vigaña (Asturias, NW Spain) [PDF]
, 2017 Bronze production during the Iron Age of the Iberian Peninsula is characterised by the use of a relatively simple technology, based on crucible-furnaces.
Farci, Carlotta +2 more
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