Crystal Structure of Monohydrocalcite (Calcium Carbonate Monohydrate)-CaCO3H2O or CaHCO3(OH): A New Hydrogen-Stabilized Piezoelectric

Abstract

Calcium carbonate monohydrate (CaCO3.H2O, CaHCO3(OH), monohydrocalcite) has been found in a wide variety of occurrences: Portland-cement reaction products1; calcareous encrustations in Lake Issyk-Kul, Kirgizstan2; otoliths (concretions in inner ear) of a tiger shark3; air-conditioning unit deposits4; in natural deposits (speleothems)5 by an evaporation-aerosol mechanism; a biochemical process6; lake deposits7; and in a guinea-pig bladder stone.8 It has also been synthesized by other investigators.913 Various impurities like polyphosphates, magnesium compounds, and some organic chemical additives, like sugar, and low temperature are known to favor the formation of this substance.

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Document Details

Document Type
Technical Report
Publication Date
Feb 13, 2019
Accession Number
AD1068027

Entities

People

  • I. Kohatsu
  • J. W. Mccauley

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Absorption
  • Absorption Spectra
  • Calcium
  • Calcium Compounds
  • Carbonates
  • Chemical Compounds
  • Chemistry
  • Crystal Growth
  • Crystal Structure
  • Crystals
  • Diffraction
  • Ear
  • Gels
  • Infrared Spectra
  • Materials
  • Materials Science
  • Mechanics
  • Precession
  • Silica Gels
  • Single Crystals
  • Spectra
  • Superstructures
  • X Rays
  • X-Ray Diffraction

Readers

  • Aquatic Ecology
  • Coastal and Marine Engineering/Sediment Transport/Hydraulic Engineering
  • Electrochemical Engineering/ Fuel Cell Technologies