PHASE COMPOSITION AND MICROMORPHOLOGY OF POLYPHASE DIOPSIDE-BEARING MATERIALS

Authors

  • Bojidar Jivov Bulgarian Academy of Sciences, Institute of Metal Science, Equipment and Technologies with Hydro- and Aerodynamics Centre “Acad. A. Balevski”, 67 “Shipchenski Prohod” Blvd, 1574 Sofia, Bulgaria
  • Momchil Dyulgerov Department of Mineralogy, Petrology and Economic Geology, Faculty of Geology and Geography, Sofia University “St Kliment Ohridski”, 15 Tsar Osvoboditel Blvd, 1504 Sofia, Bulgaria
  • Vladimir Petkov Bulgarian Academy of Sciences, Institute of Metal Science, Equipment and Technologies with Hydro- and Aerodynamics Centre “Acad. A. Balevski”, 67 “Shipchenski Prohod” Blvd, 1574 Sofia, Bulgaria
  • Mihaela Aleksandrova Bulgarian Academy of Sciences, Institute of Metal Science, Equipment and Technologies with Hydro- and Aerodynamics Centre “Acad. A. Balevski”, 67 “Shipchenski Prohod” Blvd, 1574 Sofia, Bulgaria
  • Gabriel Peev Bulgarian Academy of Sciences, Institute of Metal Science, Equipment and Technologies with Hydro- and Aerodynamics Centre “Acad. A. Balevski”, 67 “Shipchenski Prohod” Blvd, 1574 Sofia, Bulgaria

DOI:

https://doi.org/10.59957/jctm.v60.i5.2025.6

Keywords:

silicate melt, polyphase materials, diopside

Abstract

Based on natural carbonate raw materials, oxide components and fluorite, polyphase materials with a silicate composition were synthesized in laboratory conditions. The phase composition, structure and micromorphology of the obtained experimental samples were studied. Their textural properties - medium to micro-grained, spinifex or chilled marginal zones, attest that they have crystalized from a melt. In separate areas, gradual transitions from one type of texture to another and a limited presence of amorphous zones were observed. The diopside is the main phase that appear in all samples as prismatic to needle-shaped crystals. Fluorite presents in small amount in all samples with spheroidal to irregular shape. Wollastonite, akermanite, calcite and quartz also present as important phases according to sample’s composition. Zincian hydroxide, chromite and an unidentified pigment are small constituents and reflect addition of various metals as colorants.

Author Biography

Momchil Dyulgerov, Department of Mineralogy, Petrology and Economic Geology, Faculty of Geology and Geography, Sofia University “St Kliment Ohridski”, 15 Tsar Osvoboditel Blvd, 1504 Sofia, Bulgaria

First author of the article.

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Published

2025-09-03

Issue

Vol. 60 No. 5 (2025)

Section

Articles

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