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Date of Award


Document Type


Degree Name

Master of Science (M.S.)


Graduate Studies

First Advisor

Herschel Frye

First Committee Member

Michael J. Minch

Second Committee Member

Larry O. Spreer


Routine non-destructive analyses of rocks and minerals in slab or powder form maybe practicable by the application of the technique of attenuated total reflection [ATR] in infrared [IR] spectrophotometry.

An atlas of spectra would serve the analytical chemist and geologist, who in turn would serve the miner, the lapidarist, and other groups interested in rocks and minerals.

No effort has been made to produce an atlas of spectra of rocks and minerals by ATR. No ATR spectra of rocks and minerals were found in the literature. The history of ATR indicates that it is still in its early stages of development. The application of all phases of IR to the study of minerals has been employed much less than to the study of organics.

For the analysis of rocks and minerals, ATR is more versatile and more convenient than most methods. It is applicable for both opaque and transparent materials of thick or thin films. It is often requires no sample preparation.

This study of ATR of minerals involves the development of an atlas of mineral powder spectra and of mineral slab spectra, the comparison of the two sets of spectra with each other, and the comparison of powder spectra from ATR with transmission spectra in the literature. the study is confined to the spectral range of 0.5 - 15.5 microns.