An amoeboid olivine aggregates (AOA) are the refractory end-member of a family of fine-grained inclusions. They consist of masses of fine-grained (generally forsteritic) olivine crystals with other phases dispersed in between. The AOA are important components of carbonaceous chondrite and have been reported only from the unequilibrated Semarkona LL3.0 ordinary chondrite and examined by author equilibrated Sahara 02500 ordinary chondrite. The AOA’s are thought to represent solar-nebula condensates that experienced high-temperature annealing, but largely escaped melting. An amoeboid olivine aggregate found in the equilibrated ordinary Sahara 02500 chondrite has experienced weak planetary metamorphism resulting in equilibration and recrystallization of fine-grained olivine and albitic feldspar. The aggregate contains several fine-grained inclusions consisting of recrystallised fayalitic olivine, feldspar and minor amounts of metal, diopside, chromite, and apatite.
Meteorite craters, volcanoes and deep valleys are main obiects of Mars topography. The are many tausend or millions of craters and they are very different, with diameters of only centimeters to big basins with diameters of 25oo kilometers. The age of oldest craters on Mars is about 3,9 billions year.
The actual state of the Polish meteoritics history elaboration is presented. All gathered information about the polish meteorite history of sciences, could be imprinted on the memory by form of the data base. It will be also a helpful tool to study history of investigation of meteorites.
Zofia H. Gąsiorowska in years 1950–1956 prepared first bibliography of the Polish meteoritics. This work was well-known little. The authoress also left the row of hand-written works relating to the Polish meteoritics.
The paper contains recent catalogue data of 233 specimens of the Pułtusk meteorites and 53 specimens from other falls as well as preliminary data on the Sahara meteorites and some data on tectites and impactites collected in the Geological Museum at University of Warsaw.
The article presents the person Stanisław Jundziłł, the professor of the natural history at The University of Vilnius. Stanisław Jundziłł was interested in meteorites. First in Polish of the catalogue falls of meteorites published in year 1805. He occupied the also important place in the investigations of the meteorite Brahin.
This article describes the results of metallurgical studies of three experiments on hammering products made of iron meteorites. The objective qualification criteria of these materials created by plastic deformation were defined: carburization in smithing hearth, creating martensitic structure and the existence of small-martensitic weld and increased content of nickel.
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