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Читать далееFIELD: chemistry. SUBSTANCE: present invention can be used in making chromium anhydride, used in chemical, paint and coating, textile, metallurgical and other industries. The method of producing chromium anhydride involves leaching a chromite concentrate at 140-160 °C with a mixture of 60-62% sulphuric acid and a catalyst - chromium anhydride.
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Читать далееFeb 26, 2019 · Pyrope xenocrysts ( N = 52) with associated inclusions of Ti- and/or Cr-rich oxide minerals from the Aldanskaya dyke and Ogonek diatreme (Chompolo field, southeastern Siberian craton) have been ...
Читать далееFeb 1, 1975 · In a study of its origin in olivine-bearing lunar rocks, symplectite is grouped into the following types: (1) very abundant blebs in olivine phenocrysts, (2) scattered blebs in dunite, (3 ...
Mar 15, 2012 · PDF | В інтрузіях габроїдів, які належать до комплексу порід батоліту Антарктичного півостріва, прояви ...
Читать далееJun 15, 2021 · A review of previous work relevant to the formation of concentrations of chromite in peridotites from ophiolitic (s.l.) sequences highlights some of the key problems in understanding the complex ...
Читать далееSemantic Scholar profile for Калганова Светлана Геннадьевна Калганова Светлана Геннадьевна, with 1 scientific research papers.
Читать далееMar 1, 1999 · Paleoproterozoic Complex of Layered Intrusions of the Kola Peninsula and Its Metallogeny (Russia)
Читать далееКазахстан расположит в Евразии и её площадь занимает девятое…
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