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Gamyanin, G. N.; Bortnikov, N. S.; Zhdanov, Yu. Ya; Zayakina, N. V.; Mokhov, A. V.; Popova, S. K.; Suknev, V. S.
Doklady earth sciences, 3/2007, Letnik: 413, Številka: 1Journal Article
The reflection spectra were obtained for three differently colored zones with different chemical compositions (Table 2). The lightest zone is characterized by the maximum values of reflections, while the darkest zone with the highest As contents shows the lowest values. The isomorphic substitution of Bi and Si for Pb and As, respectively, shows no effect on the reflection curves.They are always subparallel, with the maximum peak of the mineral within 560620 nm.
