Issue 51, 2020
From the journal:

Chemical Communications

Formation of nano-magnesite in the calcareous spicules prepared under ambient conditions†

Chieh Tsao,‡a   Pao-Tao Yu,‡a   Chun-Chieh Wangb  and  Jerry Chun Chung Chan ORCID logo *a  

* Corresponding authors

a Department of Chemistry, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, Taiwan
E-mail: chanjcc@ntu.edu.tw

b National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan

Abstract

We report that high-Mg calcite spherulites can undergo a coarsening process to form calcareous spicules of ∼30 microns in width and several hundred microns in length after an aging process in air for a prolonged period. During the aging process, the crystallinity of the calcitic structure has been improved substantially with a significant migration of Mg ions toward the mineral surface. In a thin-foil sample of the spicule aged for 20 months, nanocrystallites of magnesite with minor substitution level of Ca ions have been found near the surface of the spicule.

Graphical abstract: Formation of nano-magnesite in the calcareous spicules prepared under ambient conditions

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Article information

DOI
https://doi.org/10.1039/D0CC02961K
Article type
Communication
Submitted
24 Apr 2020
Accepted
21 May 2020
First published
02 Jun 2020
This article is Open Access
Creative Commons BY-NC license

Chem. Commun., 2020,56, 6925-6928

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Formation of nano-magnesite in the calcareous spicules prepared under ambient conditions

C. Tsao, P. Yu, C. Wang and J. C. C. Chan, Chem. Commun., 2020, 56, 6925 DOI: 10.1039/D0CC02961K

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