The Near-Infrared Combination Band Frequencies of Dioctahedral Smectites, Micas, and Illites

Cambridge University Press (CUP) - Tập 41 Số 6 - Trang 639-644 - 1993
J. L. Post1, Paul N. Noble2
1California State University, Department of Civil Engineering and Chemistry Department, Sacramento, CA, United States
2Department of Civil Engineering and Chemistry Department, California State University, Sacramento, USA

Tóm tắt

AbstractThe highest frequency near-infrared (NIR) combination bands for specimens of four species of mica—montmorillonite-beidellite, illite, chlorite, and kaolinite—were correlated with respect to Al2O3 content. A direct linear correlation was found between the combination band positions and the Al2O3 contents of the montmorillonite-beidellite series, which may be given as: ν̄ cm−1 = (5.38 ± 0.04) (% Al2O3) + (4412.8 ± 0.9). A similar linear correlation for muscovite is: ν̄ cm−1 = (6.10 ± 0.25) (% Al2O3) + (4434.1 ± 8.3).Possible NIR band interferences are shown for different mineral mixtures, along with the correlation of different illites with muscovite. No combination bands were found in the frequency region 4425 cm−1 to 4625 cm−1 for specimens in which the Al2O3 content was only in the tetrahedral layer sites.

Từ khóa


Tài liệu tham khảo

10.1180/mono-4.15

Post, 1993, Geochemistry of micas from Precambrian rocks of Northern New Mexico: N.M. Bureau of Mines and Mineral Resources, Circular, 202, 1

Hunt, 1973, Visible and near-infrared spectra of minerals and rocks. VI. Additional silicates, Modern Geol., 4, 96

Weaver, 1973, The Chemistry of Clay Minerals

10.1180/claymin.1972.009.3.10

MacEwan, 1951, X-ray Identification and Crystal Structures of Clay Minerals, 104

Clark, 1990, High spectral resolution reflectance spectroscopy of minerals, Jour. Geophys. Research, 95

Shannon, 1923, Notes on the mineralogy of three gouge clays from precious metal veins, Proceedings of the United States National Museum, 62, 1

Piper, 1926, Geology and metal-liferrous resources of the region about Silver City, Idaho, Idaho Bureau of Mines and Geology Bull., 11, 145

Lindgren, W. , (1899) The gold and sil ver veins of Sil ver City, DeLamar and other mining districts of Idaho: 20th Annual Report, Part III, USGS, 135–140.

10.1029/JB078i023p04983

10.1190/1.1440721

Post, 1985, Roscoelite type locality, California Geology, 38, 99

10.1346/CCMN.1981.0290211

Stubican, 1961, Isomorphous substitution and infrared spectra of the layer-lattice silicates, Amer. Mineral., 46, 33

Post, 1981, Expansive soils. Volume change and expansion pressure of smectites, California Geology, 34, 197

Hunt, 1970, Visible and near-infrared spectra of minerals and rocks. I. Silicate minerals, Modern Geol., 1, 283

Higgins, 1988, Application of remote sensing to California’s geology, California Geology, 41, 123

Post, 1988, Elemental analyses of mica resources in California, California Geology, 41, 3

Weir, 1962, Beidellite, Amer. Mineral., 47, 137

10.1346/CCMN.1975.0230407

10.1346/CCMN.1983.0310606

10.1346/CCMN.1983.0310211

MacEwan, 1961, The X-ray Identification and Crystal Structures of Clay Minerals, 167

Kral, 1990, Advances in exploration technology are crucial for gold companies in the 1990s, Mining Engr., 42, 255

Lin, 1981, Dissolution kinetics of phlogopite. I. Closed system, Clays and Clay Minerals, 29, 101, 10.1346/CCMN.1981.0290203

Deer, 1962, Rock-Forming Minerals S, 226

Vedder, 1964, Correlations between infrared spectrum and chemical compositions of mica, Amer. Mineral, 49, 736

Thông tin
Thông tin xuất bản

Cambridge University Press (CUP)

Tập 41 Số 6

639-644

Thông tin tác giả