Temat: cosmic dust - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Silicide spherules from Permian sediments of the Fore-Sudetic Monocline (SW Poland)
Autorzy:: Muszer, A.
Powiązania:: https://bibliotekanauki.pl/articles/110639.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: Permian
Fe-silicide spherules
cosmic dust
ore minerals
Fe-Si alloy
Opis:: The presence of Fe-silicides, extremely rare mineral phases were documented in the Permian Cu-bearing ore formation in the Fore-Sudetic Monocline (Polkowice-Sieroszowice and Rudna mines, SW Poland). It is a first report of their occurrence within rocks of Late Palaeozoic age. The Fe-Si alloys forme spherules of various structure and chemical composition. The silicide spherules were found in the flotation concentrates prepared from the copper ore. Their composition varies from FeSi (fersilicite) to Fe2Si3 or Fe4Si9. A dominant constituent is Fe5Si3 (xifengite) with admixtures of P, Ti, Cr and Mn. Native Si and Ti were detected in the marginal part of spherules. The current knowledge do not permit to determine unequivocally whether the Fe-silicide spherules formed as a result of Permian cosmic dust or constitute terrestrial magmatic material of ultramafic character transported into a sedimentary basin from the adjacent terrain.
Źródło:: Physicochemical Problems of Mineral Processing; 2014, 50, 1; 107-118
1643-1049
2084-4735
Pojawia się w:: Physicochemical Problems of Mineral Processing
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Lodowe meteoryty, kosmiczne galarety i kamienie jak pył?
Ice meteorites, cosmic jelly and rocks as a dust?
Autorzy:: Strzeja, Jerzy
Powiązania:: https://bibliotekanauki.pl/articles/1032689.pdf
Data publikacji:: 2009
Wydawca:: Polskie Towarzystwo Meteorytowe
Tematy:: cosmic jelly
dust
ice meteorites
meteorites
the Solar System
Opis:: This article is appeared a problem of meteorites classification and tried to connect interpretation and explanation of other phenomenon which are situated on the border between science and fiction. The conventional classification of meteorites indexed them as: (1) stony meteorites, (2) stony-iron meteorites and (3) iron meteorites. The matter of the Solar System could have various forms and its very varied in relation according to their physical, chemical and mineralogical aspects. In compliance with the above, the author tried to extend the classification by added e.g. ice meteorites, which are recognized in Russian literature. Sometimes others, not classified phenomenon are described as “colorful rains”, “jelly matter”, gas-dust objects or sudden, local darkness. As an evidences that could confirm the main theses of the author, an examples of literature are quoted. All of them should be supported by science investigations which are limited by rare frequency of the phenomena occurrence. By better description of small and different portions of cosmic matter, we could understand the Solar System and its laws.
Źródło:: Acta Societatis Metheoriticae Polonorum; 2009, 1; 129-136
2080-5497
Pojawia się w:: Acta Societatis Metheoriticae Polonorum
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "cosmic dust" wg kryterium: Temat

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język