. Carnegie Institution of Washington publication. 34 INFRA-RED REFLECTION SPECTRA. the rock-salt prism showed only weak maxima at 8 to 10 In a previous study of quartz with a rock-salt prism a narrow, quite intense band was located at /*, which had not been recorded by Rubens and Nichols. In the present examination, using grating No. 1, the maximum was found at 20 21' (=), while with grating No. 2 the maximum was located at 30 20' (=^). In table I are given the maxima of the reflection bands of the minerals studied. Table I. — Maxima of Reflection Bands. Smithsonite, ZnCC>
. Carnegie Institution of Washington publication. 34 INFRA-RED REFLECTION SPECTRA. the rock-salt prism showed only weak maxima at 8 to 10 In a previous study of quartz with a rock-salt prism a narrow, quite intense band was located at /*, which had not been recorded by Rubens and Nichols. In the present examination, using grating No. 1, the maximum was found at 20 21' (=), while with grating No. 2 the maximum was located at 30 20' (=^). In table I are given the maxima of the reflection bands of the minerals studied. Table I. — Maxima of Reflection Bands. Smithsonite, ZnCC>3 Cerussite, PbC03 Strontianite, SrCOs Witherite, BaCOs Malachite, CuOC02-H20 Azurite, 3 CuO-2 C02-H20 .. Dolomite, CaMg (C03)2 Siderite, FeC03 Calcite, CaC03 Aragonite, CaC03 Magnesite, MgC03 Scheelite, CaW04 Zircon, ZrSi04 Wulfenite, PbMo04 Rutile, Ti02 Cyanite, Al203-Si02 Corundum, A1203 Topaz (Al-F)2Si04: Yellow White Spodumene, LiAl(Si03)2 Muscovite Mica, H2KAl3(Si04)3 Cryolite, 3 NaF-A1F3 Beryl, Be3Al2(Si03)6 Quartz: Glass Crystalline 7-05 7-25 7-3 7-32 6-95 7-i : 11. o "•75 i3-5 i3-i "•3 i5-i M Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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