Abstract

Low-grade carbonaceous gold ore (0.01 to 1.8 oz/ton of gold) from the Carlin mine in Elko county, Nevada, has been characterized by a variety of analytical and spectroscopic techniques with emphasis on vibrational spectroscopy. A particular concern was determining the nature of the carbon-containing material in the ore. It was found that in addition to the anticipated carbonate, finely disseminated elemental carbon is present in amounts ranging from 0.062 to 0.43 wt. %. Contrary to previous reports, no detectable amounts of humic acid materials or organic hydrocarbons are present in any of the samples investigated.

Detection of EPR in metalloorganic complexes using the photoacoustic effect

U. Netzelmann, E. v. Goldammer, J. Pelzl, and H. Vargas
Appl. Opt. 21(1) 32-34 (1982)

On-stream analysis of iron ore slurry using laser-induced breakdown spectroscopy

Xiao Cheng, Xinyan Yang, Zhihao Zhu, Lianbo Guo, Xiangyou Li, Yongfeng Lu, and Xiaoyan Zeng
Appl. Opt. 56(33) 9144-9149 (2017)

Application of attenuated total reflection surface-plasmon-polariton Raman spectroscopy to gold and copper

Masayuki Futamata
Appl. Opt. 36(1) 364-375 (1997)

Acidity measurement of iron ore powders using laser-induced breakdown spectroscopy with partial least squares regression

Z.Q. Hao, C.M. Li, M. Shen, X.Y. Yang, K.H. Li, L.B. Guo, X.Y. Li, Y.F. Lu, and X.Y. Zeng
Opt. Express 23(6) 7795-7801 (2015)

Theoretical analysis of photoacoustic Raman spectroscopy

J. J. Barrett and D. F. Heller
J. Opt. Soc. Am. 71(11) 1299-1308 (1981)