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D. F. Murashov
D. F. Murashov

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Articles

Article
Geology
  • Date submitted
    1915-06-12
  • Date accepted
    1915-08-24

The Ayat gold and cinnabar deposit

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The described deposit is located in the Yekaterinburg District of Perm Province, in the northeast corner of block 109 of the Ayat Dacha of the Verkh-Isetsk District. The vein rock, of igneous origin, cutting through the thickness of the host rocks like dikes, is a rock of porphyritic structure, sometimes with a clear composition. The phenocrysts are large grains of albite, varying in size from No. 0 to No. 4. The groundmass consists of small crystals, usually elongated in the direction of flow, of the same albite, quartz, and small grains of orthoclase that cannot be optically investigated and are only detected by chemical analysis. Inclusions of apatite crystals, pyrite, and occasionally tourmaline and stibnite are observed almost everywhere. Based on the work carried out to date, the deposit as it currently appears has no commercial significance, but it must be kept in mind that many very essential aspects of it have not yet been clarified.

How to cite: Murashov D.F. The Ayat gold and cinnabar deposit // Journal of Mining Institute. 1915. Vol. 5. Iss. 4-5. p. 361-381.
Article
  • Date submitted
    1909-06-24
  • Date accepted
    1909-08-23

On the crystallization and some physical properties of cobalt-amino-chloro-dimethylglyoxime

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Cobalt‑amino‑chloro‑dimethylglyoxime was first obtained by L. A. Chugaev, who offered it to one of the authors for crystallographic study. Crystallization was carried out at about +20 °C from solutions in water containing 5% acetic acid. In this solvent, the compound under investigation is rather sparingly soluble in the cold, its solubility increasing upon heating. An excess of the powdered substance was heated in the solvent on a water bath to approximately the boiling point; the hot solution was then filtered and cooled at room temperature (about +20°C). For the results of the investigations, see the article.

How to cite: Unknown, Unknown On the crystallization and some physical properties of cobalt-amino-chloro-dimethylglyoxime // Journal of Mining Institute. 1909. Vol. 2. Iss. 4. p. 272-274.