Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published November 1974 | public
Journal Article

The Occurrence of Alstonite at Cave in Rock, Illinois

Abstract

CaBa(CO_3)_2 has been identified as coatings of pyramidal crystals on veins of mixed carbonates in specimens of barium and calcium carbonates from the Minerva mine at Cave in Rock, Illinois. This represents the first recorded American occurrence of this mineral. It is biaxial negative, Nα = 1.526, Nβ = 1.671, Nγ = 1.672. Infrared spectra, x-ray powder diffraction data, and emission spectrographic data are reported.

Additional Information

© 1974 Mineralogical Record Inc. We thank W. J. Rodekohr for bringing to our attention the unidentified mineral in the Cave in Rock speciments, and Stephen Weiner for assistance with the electronmicroscope photography.

Additional details

Created:
August 22, 2023
Modified:
October 23, 2023