. Carnegie Institution of Washington publication. WATER OF CONSTITUTION. MANGANITE, MnO(OH). (Orthorhombic; ground parallel to m; opaque; t = mm. Fig. 26.) As will be noticed in curve a of fig. 26, manganite has no sharp bands throughout the whole region to 9^. There is a light indication of a band at 3 ^ and another at /*.. 23*56789 FIG. 26.—Mauganite (a); Gothite (b}\ Bauxite (c). 10 GOTHITE, FeO(OH). (Section ground parallel to b; £ = mm. Curve b, fig. 26.) The appearance of this mineral is opaque black, metallic luster, and as a whole would not impress one as being quite tran
. Carnegie Institution of Washington publication. WATER OF CONSTITUTION. MANGANITE, MnO(OH). (Orthorhombic; ground parallel to m; opaque; t = mm. Fig. 26.) As will be noticed in curve a of fig. 26, manganite has no sharp bands throughout the whole region to 9^. There is a light indication of a band at 3 ^ and another at /*.. 23*56789 FIG. 26.—Mauganite (a); Gothite (b}\ Bauxite (c). 10 GOTHITE, FeO(OH). (Section ground parallel to b; £ = mm. Curve b, fig. 26.) The appearance of this mineral is opaque black, metallic luster, and as a whole would not impress one as being quite transparent to 9/A. It transmits about 20 per cent of the energy throughout this whole region, which is in marked contrast with the almost complete opacity of iron. The 3 ^ band is well marked, while a second one occurs at 9 //.. This specimen was kindly presented by the late Prof. S. L. Penfield. 30 C IT, to 7. 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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