M. Járó - L. Költő szerk.: Archaeometrical research in Hungary (Budapest, 1988)

Analysis - KRISTON László, JÁRÓ Márta: Impact of acid treatment of pigment samples from wall paintings on the result of paint identification by X-ray diffraction

Ca : calcite / lime - white / He: hematite /red ochre/ Ca He

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* L AA» Ca b Ca Ca c Ca Ca c TT T T <V V * ¥ * Ca .1 ¥ 2V Fif.l Diffnctograms oflime-white and red ochre mixed in different proportions: a, 20%/weight of red ochre - b, 10%/weight of red ochre - c, 2%/weight of red ochre Table 1 *d" values pertaining to the strongest reflections of mercuric sulphide, quartz, dolomite and lead (II, UI

) oxide Pigment d values (nm) (relative intensity given in brackets) Mercuric sulphide Quartz Dolomite Lead (II, III) oxide 0336(100%) 0.286(95%) 0.198(35%) 0334(100%) 0.426(35%) 0.182(17%) 0.289 (100%) 0219 (30%) 0.179 (30%) 0338(100%) 0.290(50%) 0279(45%)