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A new crystal growth form of vaterite, CaCO sub 3

Abstract

Microcrystalline vaterite, CaCO{sub 3}, has been synthesized by decomposition of ikaite, CaCO{sub 3}.6H{sub 2}O, crystals at room temperature. Scanning electron micrographs show that vaterite occurs as arborescent aggregates {approx equal}30 to 40 {mu}m in size. This growth form has not been described before. It is of interest that the overall morphology of the vaterite is reminiscent of some dendritic calcite tufas, although on a smaller scale. This similarity opens up the possibility that the calcitic tufas such as that associated with the Quaternary Lake Lahonton, Nevada, may have been deposited as vaterite that changed to calcite, while preserving the original growth form. (orig.).
Authors:
Shaikh, A M [1] 
  1. Kuwait Univ., Safat (Kuwait). Dept. of Geology
Publication Date:
Aug 01, 1990
Product Type:
Journal Article
Reference Number:
AIX-22-020331; EDB-91-031316
Resource Relation:
Journal Name: Journal of Applied Crystallography; (Denmark); Journal Volume: 23:4
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CALCIUM CARBONATES; CRYSTAL GROWTH; MEDIUM TEMPERATURE; MINERALS; SCANNING ELECTRON MICROSCOPY; ALKALINE EARTH METAL COMPOUNDS; CALCIUM COMPOUNDS; CARBON COMPOUNDS; CARBONATES; ELECTRON MICROSCOPY; MICROSCOPY; OXYGEN COMPOUNDS; 656002* - Condensed Matter Physics- General Techniques in Condensed Matter- (1987-)
OSTI ID:
6244270
Country of Origin:
Denmark
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0021-8898; CODEN: JACGA; Other: CNN: SDG109
Submitting Site:
DKN
Size:
Pages: 263-265
Announcement Date:
Mar 01, 1991

Citation Formats

Shaikh, A M. A new crystal growth form of vaterite, CaCO sub 3. Denmark: N. p., 1990. Web. doi:10.1107/S0021889890002485.
Shaikh, A M. A new crystal growth form of vaterite, CaCO sub 3. Denmark. https://doi.org/10.1107/S0021889890002485
Shaikh, A M. 1990. "A new crystal growth form of vaterite, CaCO sub 3." Denmark. https://doi.org/10.1107/S0021889890002485.
@misc{etde_6244270,
title = {A new crystal growth form of vaterite, CaCO sub 3}
author = {Shaikh, A M}
abstractNote = {Microcrystalline vaterite, CaCO{sub 3}, has been synthesized by decomposition of ikaite, CaCO{sub 3}.6H{sub 2}O, crystals at room temperature. Scanning electron micrographs show that vaterite occurs as arborescent aggregates {approx equal}30 to 40 {mu}m in size. This growth form has not been described before. It is of interest that the overall morphology of the vaterite is reminiscent of some dendritic calcite tufas, although on a smaller scale. This similarity opens up the possibility that the calcitic tufas such as that associated with the Quaternary Lake Lahonton, Nevada, may have been deposited as vaterite that changed to calcite, while preserving the original growth form. (orig.).}
doi = {10.1107/S0021889890002485}
journal = []
volume = {23:4}
journal type = {AC}
place = {Denmark}
year = {1990}
month = {Aug}
}