engleski

X-ray diffraction study of mineral components in calcareous algae (Corallinaceae, Rhodophyta)

The mineral composition of nine species of red calcareous algae (Corallinaceae, Rhodophyta)collected in the Adriatic Sea in 1987 and 1988 was examined by X-ray powder diffraction (counter diffractometer, monochromatized CuK(alpha) radiation). In addition, a comparison between the calcareous algae from the north Adriatic (Rovinj area)and the central Adriatic (Kornati Islands) with regard to genus, species and environmental factors was undertaken. All analysed samples contained magnesium calcite, which was dominant in all but in two cases, where aragonite was the main phase. Diffraction lines of magnesium calcite were broadened and shifted toward higher Bragg angles in relation to pure calcite.

Adriatic Sea ; Aragonite ; Calcareous algae ; Kornati Islands ; North Adriatic ; Magnesim calcite ; X-ray diffraction

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