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near infrared spectra

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Journal Article

Near infrared spectra of white mica in the Belt Supergroup and implications for metamorphism Available to Purchase

Edward F. Duke, Reed S. Lewis
Published: 01 July 2010
American Mineralogist (2010) 95 (7): 908–920.
DOI: https://doi.org/10.2138/am.2010.3281
... ; Vervoort et al. 2007 ; Brewer et al. 2008 ), and these may record earlier metamorphic events that predated Belt deposition. Visible and near infrared (Vis/NIR, 350–2500 nm) reflectance spectra were acquired with a FieldSpec FR Pro portable spectroradiometer (Analytical Spectral Devices, Inc...
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View PDF for article title, <span class="search-highlight">Near</span> <span class="search-highlight">infrared</span> <span class="search-highlight">spectra</span> of white mica in the Belt Supergroup and implications for metamorphism
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Journal Article

Optical and near infrared spectra of ringwoodite to 21.5 GPa: Implications for radiative heat transport in the mantle Available to Purchase

Hans Keppler, Joseph R. Smyth
Published: 01 July 2005
American Mineralogist (2005) 90 (7): 1209–1212.
DOI: https://doi.org/10.2138/am.2005.1908
...Hans Keppler; Joseph R. Smyth Abstract High pressure optical and near infrared spectra of a single crystal of ringwoodite with composition (Mg 0.90 Fe 0.10 ) 2 SiO 4 were measured to 21.5 GPa. The spectrum at ambient pressure shows a strong band at 12 265 cm −1 with two shoulders at 8678 cm −1...
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View PDF for article title, Optical and <span class="search-highlight">near</span> <span class="search-highlight">infrared</span> <span class="search-highlight">spectra</span> of ringwoodite to 21.5 GPa: Implications for radiative heat transport in the mantle
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Journal Article

Near infrared spectra of muscovite, Tschermak substitution, and metamorphic reaction progress: Implications for remote sensing Available to Purchase

Edward F. Duke
Journal: Geology
Published: 01 July 1994
Geology (1994) 22 (7): 621–624.
DOI: https://doi.org/10.1130/0091-7613(1994)022<0621:NISOMT>2.3.CO;2
...Edward F. Duke Abstract Near infrared (NIR) spectra of Precambrian metagraywacke in the Black Hills, South Dakota, demonstrate that reflectance spectroscopy can be used to monitor progressive changes in mineral chemistry as a function of metamorphic grade. The wavelength of a combination Al-O-H...
View PDF for article title, <span class="search-highlight">Near</span> <span class="search-highlight">infrared</span> <span class="search-highlight">spectra</span> of muscovite, Tschermak substitution, and metamorphic reaction progress: Implications for remote sensing
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Journal Article

Near-infrared spectra of West Shasta gossans compared with true and false gossans from Australia and Saudi Arabia and Trace element content of gossans at four mines in the West Shasta massive sulfide district; discussion Available to Purchase

Graham F. Taylor
Journal: Economic Geology
Published: 01 February 1987
Economic Geology (1987) 82 (1): 230–232.
DOI: https://doi.org/10.2113/gsecongeo.82.1.230
View PDF for article title, <span class="search-highlight">Near</span>-<span class="search-highlight">infrared</span> <span class="search-highlight">spectra</span> of West Shasta gossans compared with true and false gossans from Australia and Saudi Arabia and Trace element content of gossans at four mines in the West Shasta massive sulfide district; discussion
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Add to Citation Manager for <span class="search-highlight">Near</span>-<span class="search-highlight">infrared</span> <span class="search-highlight">spectra</span> of West Shasta gossans compared with true and false gossans from Australia and Saudi Arabia and Trace element content of gossans at four mines in the West Shasta massive sulfide district; discussion
Journal Article

Near-infrared spectra of West Shasta gossans compared with true and false gossans from Australia and Saudi Arabia and Trace element content of gossans at four mines in the West Shasta massive sulfide district; reply Available to Purchase

Gary L. Raines, R. F. Sanzolone
Journal: Economic Geology
Published: 01 February 1987
Economic Geology (1987) 82 (1): 233–234.
DOI: https://doi.org/10.2113/gsecongeo.82.1.233
View PDF for article title, <span class="search-highlight">Near</span>-<span class="search-highlight">infrared</span> <span class="search-highlight">spectra</span> of West Shasta gossans compared with true and false gossans from Australia and Saudi Arabia and Trace element content of gossans at four mines in the West Shasta massive sulfide district; reply
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Add to Citation Manager for <span class="search-highlight">Near</span>-<span class="search-highlight">infrared</span> <span class="search-highlight">spectra</span> of West Shasta gossans compared with true and false gossans from Australia and Saudi Arabia and Trace element content of gossans at four mines in the West Shasta massive sulfide district; reply
Journal Article

Near-infrared spectra of West Shasta gossans compared with true and false gossans from Australia and Saudi Arabia Available to Purchase

Gary L. Raines, Linda G. McGee, Stephen J. Sutley
Journal: Economic Geology
Published: 01 December 1985
Economic Geology (1985) 80 (8): 2230–2239.
DOI: https://doi.org/10.2113/gsecongeo.80.8.2230
...Gary L. Raines; Linda G. McGee; Stephen J. Sutley Abstract The near-infrared spectra of a suite of outcrop samples of massive sulfide gossans and false gossans representing three different weathering environments were measured and studied with X-ray, scanning electron microscope, and energy...
View PDF for article title, <span class="search-highlight">Near</span>-<span class="search-highlight">infrared</span> <span class="search-highlight">spectra</span> of West Shasta gossans compared with true and false gossans from Australia and Saudi Arabia
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Add to Citation Manager for <span class="search-highlight">Near</span>-<span class="search-highlight">infrared</span> <span class="search-highlight">spectra</span> of West Shasta gossans compared with true and false gossans from Australia and Saudi Arabia
Journal Article

Effects of layer charge on the near-infrared spectra of water molecules in smectites and vermiculites Available to Purchase

F. Cariati, L. Erre, G. Micera, P. Piu, C. Gessa
Published: 01 December 1983
Clays and Clay Minerals (1983) 31 (6): 447–449.
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Journal Article

Visible and near-infrared spectra of rocks from chromium-rich areas Available to Purchase

G. R. Hunt, J. C. Wynn
Journal: Geophysics
Published: 01 April 1979
Geophysics (1979) 44 (4): 820–825.
DOI: https://doi.org/10.1190/1.1440978
...G. R. Hunt; J. C. Wynn Abstract Bidirectional reflection spectra are presented from 0.35 to 2.5 mu m for a suite of ultramafic rocks collected from chromium-rich areas in southwestern Oregon and northwestern California. Features due to the presence of chromium are entirely absent from these spectra...
View PDF for article title, Visible and <span class="search-highlight">near</span>-<span class="search-highlight">infrared</span> <span class="search-highlight">spectra</span> of rocks from chromium-rich areas
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Journal Article

Effects of chemical composition and temperature of heating on the infrared spectra of Li-saturated dioctahedral smectites. (II) Near-infrared region Available to Purchase

J. MADEJOVÁ, J. BUJDÁK, S. PETIT, P. KOMADEL
Journal: Clay Minerals
Published: 01 December 2000
Clay Minerals (2000) 35 (5): 753–761.
...J. MADEJOVÁ; J. BUJDÁK; S. PETIT; P. KOMADEL Abstract Diffuse reflectance spectra in the near-infrared region are presented for Li-saturated smectites heated up to 200°C. The smectites included three montmorillonites, an Fe-beidellite and a ferruginous smectite. Unheated samples showed a complex...
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View PDF for article title, Effects of chemical composition and temperature of heating on the <span class="search-highlight">infrared</span> <span class="search-highlight">spectra</span> of Li-saturated dioctahedral smectites. (II) <span class="search-highlight">Near</span>-<span class="search-highlight">infrared</span> region
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Journal Article

Analysis of tiles produced from a schist material and their ultraviolet, near-infrared, mid-infrared, longwave-infrared and far-infrared spectra Available to Purchase

Hulya Kuru Mutlu, Atakan Mutlu
Journal: Clay Minerals
Published: 16 March 2022
Clay Minerals (2021) 56 (4): 292–298.
DOI: https://doi.org/10.1180/clm.2022.10
... temperature through their absorption of the visible, near-infrared and far-infrared wavelength regions is evaluated. In particular, the absorption of ultraviolet and infrared radiation by the tiles was evaluated, as this could have beneficial applications for human health and the environment. UV-A radiation...
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View PDF for article title, Analysis of tiles produced from a schist material and their ultraviolet, <span class="search-highlight">near</span>-<span class="search-highlight">infrared</span>, mid-<span class="search-highlight">infrared</span>, longwave-<span class="search-highlight">infrared</span> and far-<span class="search-highlight">infrared</span> <span class="search-highlight">spectra</span>
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Add to Citation Manager for Analysis of tiles produced from a schist material and their ultraviolet, <span class="search-highlight">near</span>-<span class="search-highlight">infrared</span>, mid-<span class="search-highlight">infrared</span>, longwave-<span class="search-highlight">infrared</span> and far-<span class="search-highlight">infrared</span> <span class="search-highlight">spectra</span>
Journal Article

Interpretation of the infrared spectra of the lizardite-nepouite series in the near- and mid-infrared range Available to Purchase

Fabien Baron, Sabine Petit
Published: 01 February 2016
American Mineralogist (2016) 101 (2): 423–430.
DOI: https://doi.org/10.2138/am-2016-5352
... between the d (06–33) and the Ni/Mg ratio of the synthesized samples following a Vegard’s law and suggested a random distribution of octahedral cations. For the first time, infrared spectra of this series were given in both near and mid-infrared spectral regions (250–7500 cm −1 ). Notably, the bands due...
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View PDF for article title, Interpretation of the <span class="search-highlight">infrared</span> <span class="search-highlight">spectra</span> of the lizardite-nepouite series in the <span class="search-highlight">near</span>- and mid-<span class="search-highlight">infrared</span> range
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Add to Citation Manager for Interpretation of the <span class="search-highlight">infrared</span> <span class="search-highlight">spectra</span> of the lizardite-nepouite series in the <span class="search-highlight">near</span>- and mid-<span class="search-highlight">infrared</span> range
Journal Article

The Use of Visible and Near-Infrared Reflectance Spectra for Estimating Organic Matter Thermal Maturity Available to Purchase

Lawrence C. Rowan, Forrest G. Poole, Mark J. Pawlewicz
Journal: AAPG Bulletin
Published: 11 October 1995
AAPG Bulletin (1995) 79 (10): 1464–1479.
DOI: https://doi.org/10.1306/7834DA08-1721-11D7-8645000102C1865D
... do not affect the ratio-OM maturity relation substantially. Iron absorption occurs in the short wavelength part of the visible and near-infrared region and is readily identified in the laboratory spectra. Spectra affected by recycled OM were identified by using a pair of ratios that expresses...
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View PDF for article title, The Use of Visible and <span class="search-highlight">Near</span>-<span class="search-highlight">Infrared</span> Reflectance <span class="search-highlight">Spectra</span> for Estimating Organic Matter Thermal Maturity
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Add to Citation Manager for The Use of Visible and <span class="search-highlight">Near</span>-<span class="search-highlight">Infrared</span> Reflectance <span class="search-highlight">Spectra</span> for Estimating Organic Matter Thermal Maturity
Journal Article

Near-infrared reflectance spectra of mixtures of kaolin-group minerals; use in clay mineral studies Available to Purchase

James K. Crowley, Norma Vergo
Published: 01 August 1988
Clays and Clay Minerals (1988) 36 (4): 310–316.
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Add to Citation Manager for <span class="search-highlight">Near</span>-<span class="search-highlight">infrared</span> reflectance <span class="search-highlight">spectra</span> of mixtures of kaolin-group minerals; use in clay mineral studies
Journal Article

Near-infrared (1.3-2.4 mu m) spectra of alteration minerals; potential for use in remote sensing Available to Purchase

G. R. Hunt
Journal: Geophysics
Published: 01 December 1979
Geophysics (1979) 44 (12): 1974–1986.
DOI: https://doi.org/10.1190/1.1440951
...G. R. Hunt Abstract Reflection spectra of particulate samples of minerals that commonly occur in hydrothermally altered rocks and soils were recorded to display their features at their natural spectral bandwidths in the near-infrared from 1.3 to 2.4 mu m. Atmospheric transmission spectra were...
View PDF for article title, <span class="search-highlight">Near</span>-<span class="search-highlight">infrared</span> (1.3-2.4 mu m) <span class="search-highlight">spectra</span> of alteration minerals; potential for use in remote sensing
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Add to Citation Manager for <span class="search-highlight">Near</span>-<span class="search-highlight">infrared</span> (1.3-2.4 mu m) <span class="search-highlight">spectra</span> of alteration minerals; potential for use in remote sensing
Journal Article

Spectra of altered rocks in the visible and near infrared Available to Purchase

G. R. Hunt, R. P. Ashley
Journal: Economic Geology
Published: 01 November 1979
Economic Geology (1979) 74 (7): 1613–1629.
DOI: https://doi.org/10.2113/gsecongeo.74.7.1613
...G. R. Hunt; R. P. Ashley Abstract Visible and near-infrared (0.35 to 2.5 mu m) bidirectional reflection spectra were recorded for a suite of well-characterized hydrothermally altered rock samples. The spectra typically display well-defined bands caused by both electronic and vibrational processes...
View PDF for article title, <span class="search-highlight">Spectra</span> of altered rocks in the visible and <span class="search-highlight">near</span> <span class="search-highlight">infrared</span>
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Journal Article

Absorption Spectra of Some Silicates in the Visible and Near Infrared Available to Purchase

Sydney P. Clark, Jr.
Published: 01 December 1957
American Mineralogist (1957) 42 (11-12): 732–742.
View PDF for article title, Absorption <span class="search-highlight">Spectra</span> of Some Silicates in the Visible and <span class="search-highlight">Near</span> <span class="search-highlight">Infrared</span>
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Mid-infrared (a) and near-infrared spectra (b) of clay samples before (TAG) and after the purification treatment (Na+-TAG).

Mid-infrared (a) and near-infrared spectra (b) of clay samples before (TAG)... Available to Purchase

Published: 01 June 2012
Figure 8 Mid-infrared (a) and near-infrared spectra (b) of clay samples before (TAG) and after the purification treatment (Na + -TAG).
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Near infrared spectra of three pantelleritic glasses with total water content, ranging from 2.24 (0.10) to 5.45 (0.10) wt% and sample thickness of 0.0394 to 0.0360 cm. Spectra offset vertically for clarity. In the spectra, the band at 4500 cm–1 is assigned to the combination of stretching and bending of OH group and the band at 5200 cm–1 to the combination of stretching and bending mode of H2O molecules, while the 4000 cm–1 peak is unresolved (see the text).

Near infrared spectra of three pantelleritic glasses with total water conte... Available to Purchase

Published: 01 July 2020
Figure 1. Near infrared spectra of three pantelleritic glasses with total water content, ranging from 2.24 (0.10) to 5.45 (0.10) wt% and sample thickness of 0.0394 to 0.0360 cm. Spectra offset vertically for clarity. In the spectra, the band at 4500 cm –1 is assigned to the combination
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Total water content determined by near-infrared spectra analysis vs. water content measured by KFT. Note that there is a good correlation between the two sets of data determined by different methodologies, both in the case of the GG and TT baseline correction and evaluation of peak height and peak area. Both the 1:1 line and the four equations (and relative R2 values) of the fit lines support the ability to fit the data with constant values of molar absorptivity (discussed further in text).

Total water content determined by near-infrared spectra analysis vs. water ... Available to Purchase

Published: 01 July 2020
Figure 5. Total water content determined by near-infrared spectra analysis vs. water content measured by KFT. Note that there is a good correlation between the two sets of data determined by different methodologies, both in the case of the GG and TT baseline correction and evaluation of peak
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Decomposition of the near-infrared spectra of samples in which the clay material is composed of (a) 75% smectite–25% kaolinite and (b) 90% smectite–10% kaolinite. See Hébert et al., 2015 for more details on the method of quantification of Sm%.

Decomposition of the near-infrared spectra of samples in which the clay mat... Available to Purchase

Published: 27 October 2017
Fig. 9 Decomposition of the near-infrared spectra of samples in which the clay material is composed of (a) 75% smectite–25% kaolinite and (b) 90% smectite–10% kaolinite. See Hébert et al. , 2015 for more details on the method of quantification of Sm%.