The composition of meteorites

Up in meteorites proved the presence of the following components: silicon chlorine potassium sodium calcium aluminum magnesium manganese iron cobalt chromium Hydrogen Oxygen Nitrogen Sulphur Copper Tin Arsenic titanium carbon addition, Lockyer, by spectral analysis showed the presence in meteorites of strontium, barium, zinc , bismuth, and lithium. Thus, the composition of meteorites is less than a third of known elements on Earth. Surprising insignificance of this number can not be due to a small number of meteorites, no doubt, further tests show the presence in them and other items. Iron, magnesium and silicon are most common on Earth and take an important part in its composition. The same thing we see in meteorites, on the contrary, calcium, potassium, sodium and aluminum are found in meteorites, in relatively smaller amounts than on Earth, precious metals entirely absent, and nickel is much greater role than in rocks of the Earth. Despite these particular deviations, in general, meteorites are fully confirm the idea of ??the unity of the various world bodies - the idea inferred by spectral analysis. The data that we obtained by exploring through the prism light of the Sun, fixed stars and nebulae, brilliantly supported by the analysis of the debris of comets. But here we can go further: we can examine how these elements are grouped into simple compounds, minerals, and how minerals are made from meteor rocks. Studies that make up the great merit of the glorious mineralogist Gustav Rose, showed that most of the minerals included in the meteorites as the crystallographic form and are chemically quite similar to the minerals of the Earth. In meteorites found olivine, augite, enstatite, anorthite, tridymite, quartz, chromium iron ore, magnetic pyrites, magnetite, schedule, diamond, iron pyrite (pyrite) and, furthermore, unknown minerals on our planet, to the latter include nickel iron , sulfur calcium, ferrous chloride (Lavrenov), known compounds of phosphorus with iron and nickel (shreyberzit) and sulfur with iron and chromium (dobrelit). Troplit, odnosernistoe iron, plays an important role in meteorites on Earth is this mineral has been seen only as a companion basalt iron Ovifaka. Recently, Graham (Graham) has made a remarkable discovery: he found in meteorites, the absorbed gases. Further studies are repeated by other scientists showed that these gases when heated stand and consist of hydrogen, carbon dioxide, hydrocarbons and nitrogen. These facts, on the one hand, increase the similarity of meteorites with terrestrial volcanic magma, which also contains the absorbed gases from the other side - confirm an alleged link between meteorites and comets, which, as shown by spectral analysis, always contain hydrocarbons.