2004
DOI: 10.2138/am-2004-0717
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A near-infrared spectroscopic study of hydroxyl in natural chondrodite

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Cited by 14 publications
(13 citation statements)
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“…6). All the network modes concerned with SiO 4 stretching modes observed here in the range 1050-800 cm À1 are comparable with the modes at 997, 961, 887 and 847 cm À1 reported in chondrodite from Keral Khondalite Belt, India [26]. For chondrodite(1) six modes observed at 1032, 988 943, 898, 876 and 826 cm À1 .…”
Section: Mid-ir Spectroscopysupporting
confidence: 83%
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“…6). All the network modes concerned with SiO 4 stretching modes observed here in the range 1050-800 cm À1 are comparable with the modes at 997, 961, 887 and 847 cm À1 reported in chondrodite from Keral Khondalite Belt, India [26]. For chondrodite(1) six modes observed at 1032, 988 943, 898, 876 and 826 cm À1 .…”
Section: Mid-ir Spectroscopysupporting
confidence: 83%
“…The rest of the five bands assigned to OH correspond to the clinohumites of the present study. A set of six modes at 3685, 3650, 3571, 3561, 3411 and 3393 cm À1 were reported in the fundamental OH stretching mode region of chondrodite from Keral Khondalite Belt, India [26]. The reason for the difference in band positions of the OH stretching vibrations is attributed to the strength of the hydrogen bond formed between the OH units of the brucite-like layer and the adjacent olivine layers.…”
Section: Mid-ir Spectroscopymentioning
confidence: 97%
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“…In the near-IR region we observed the presence of a new band around 4550 cm -1 , which is due to silanol groups (Nyfeler and Armbruster 1998;Prasad and Sarma 2004). This band progressively became prominent at temperatures around 650 K (see Figs.…”
Section: Discussionmentioning
confidence: 74%
“…the powder data are given below: monoclinic, space group: P2 1 /a, a = 11.454(2), b = 5.056(1), c = 8.857(1) Å, β = 108.84(1)°, V = 485.51(2) Å 3 , Z = 2. FTIR and Raman spectra of kumtyubeite resemble spectra of humite-group minerals (Prasad and Sarma 2004;Frost et al 2007aFrost et al , 2007b. The FTIR spectrum of kumtyubeite shows the following bands (main bands are italic): 427,507,530,561,638,656,722,760,779,822,837,865,904,934,957,993,1113,1165,3541,3551, and 3558 cm -1 (Fig.…”
Section: Occurrence Mineral Association and Results Of Kumtyubeite mentioning
confidence: 91%