Spectrophotoelectrical sensitivity of argentite (Ag2S)

Tlie present paper, considered in connection with some previously published data, represents a study of the effect of crystal structure upon photoelectrical sensitivity, as observed in silver sulphide, Ag 2 S, in the isometric form, argentite, and in the orthorhombic form, acanthite.Experimental data are given on the effect of temperature, of the intensity of the radiation stimulus, and of mechanical working of the material, upon the spectro- photoelectrical sensitivity of argentite.These observations are then compared with similar data, previously published, on acanthite.The spectrophotoelectrical reactions of these two minerals were found to be quite unlike, from which it is concluded that crystal structure has a marked effect upon photoelectrical sensitivity. CONTENTS.