Division of Geological and Planetary Sciences
California Institute of Technology, Pasadena, CA 91109
Emission spectrographic analysis of a light green apophyllite from Poona, India, indicates that 1600 ppm V and 350 ppm Mn are the prin cipal trace constituents. Only 70 ppm Fe ws found. Optical spectra have been obtained which indicte that tetravalent vandium is primarily responsible for the color and dichroism of this material.
Optical spectra of green apophyllilte from Poona, India.
Green apophyllilte from Poona, India.