Calcite

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Crystallography and Physical Chemistry of Minerals & Nanominerals".

Deadline for manuscript submissions: closed (20 December 2019) | Viewed by 5644

Special Issue Editors


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Guest Editor
Department of Earth Sciences, Universita degli Studi di Torino, Torino, Italy
Interests: crystal growth; crystallography; growth kinetics; crystal morphology; biomineralization

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Guest Editor
Department of Earth Sciences, Interdepartmental Centre “Nanostructured Interfaces and Surfaces-NIS”, University of Torino, 10124 Torino, Italy
Interests: crystal growth; epitaxy; surface; interface; carbonates; sulfates; phosphates; oxalates
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Earth Sciences, Interdepartmental Centre “Nanostructured Interfaces and Surfaces-NIS”, University of Torino, 10124 Torino, Italy
Interests: crystal growth; epitaxy; surface; interface; calcite; gypsum; apatite; zeolite
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Calcite (CaCO3), which provided the creative impulse to René Juste Haüy to imagine the crystal state as a periodic discontinuity of solid matter made by “molécules intégrantes”, is a widespread mineral occurring in nature, both in the inorganic geological world (in sedimentary and metamorphic rocks, in deposits from hot springs, in caverns as stalactites and stalagmites, and in volcanic or mantle-derived rocks) and in living organisms (marine and egg shells, bones, teeth). Owing to its bi-refringence, calcite has been used in optical microscopy and in military weaponry. It also occurs as alabaster and marble in cultural heritage. Finally, it has a wide range of applications, such as in soil remediation and stabilization and concrete repair.

This Special Issue is devoted to calcite, and will focus on:

  • Crystallography, bulk and surface physical properties, twinning (geometry and growth)
  • Equilibrium and growth morphology (theoretical aspects, habit change due to the impurity adsorption /absorption)
  • Phase relationships with its polymorphs (vaterite, calcite) and its amorphous precursors
  • Biomineralization
  • Occurrence in the inorganic geological word
  • Modern applications in industry and environment
  • Cultural heritage: Art and remediation.

Prof. Dr. Dino Aquilano
Prof. Dr. Marco Bruno
Dr. Linda Pastero
Guest Editors

Manuscript Submission Information

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Keywords

  • CaCO3 Polymorphs
  • Growth Morphology
  • Biomineralization

Published Papers (1 paper)

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Review

20 pages, 7801 KiB  
Review
Epithermal Bicolor Black and White Calcite Spheres from Herja Ore Deposit, Baia Mare Neogene Ore District, Romania-Genetic Considerations
by Ioan Mârza, Călin Gabriel Tămaș, Romulus Tetean, Alina Andreica, Ioan Denuț and Réka Kovács
Minerals 2019, 9(6), 352; https://doi.org/10.3390/min9060352 - 08 Jun 2019
Cited by 1 | Viewed by 5033
Abstract
White, black, or white and black calcite spheres were discovered during the 20th century within geodes from several Pb-Zn ± Au-Ag epithermal vein deposits from the Baia Mare ore district, Eastern Carpathians, Romania, with the Herja ore deposit being the maiden occurrence. The [...] Read more.
White, black, or white and black calcite spheres were discovered during the 20th century within geodes from several Pb-Zn ± Au-Ag epithermal vein deposits from the Baia Mare ore district, Eastern Carpathians, Romania, with the Herja ore deposit being the maiden occurrence. The black or black and white calcite spheres are systematically accompanied by needle-like sulfosalts which are known by the local miners as “plumosite”. The genesis of epithermal spheres composed partly or entirely of black calcite is considered to be related to the deposition of calcite within voids filled by hydrothermal fluids that contain acicular crystals of sulfosalts, mostly jamesonite in suspension. The proposed genetic model involves gravitational concentration of sulfosalt acicular crystals towards the base of open spaces within paleochannels of epithermal fluid flow and the subsequent formation of calcite spheres by geochemical self organization of amorphous calcium carbonate that crystallized to calcite via vaterite. Full article
(This article belongs to the Special Issue Calcite)
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