JERZY TRZCINSKI, MAREK WRÓBEL AND LESZEK KIESZCZYNSKI

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A B JERZY TRZCIŃSKI, MAREK WRÓBEL AND LESZEK KIESZCZYŃSKI Mineralogical and Petrographic Study of Sigillata-type Pottery from Delos, Greece 50 µm 0,1 mm Fig. 9. Microphotographs of thin sections of sigillata from Delos, scanning electron microscope, BSE mode: A) sample nr 9, magnification X 330; B) sample nr 5, magnification X 160. Fragments of clayey rock, marked by arrows in photograph B, consist mainly of a mass of aggregated clayey crystals in form of platelets several to below twenty micrometers long. In this mass grains of quartz and other minerals from several to some tens of micrometers in size are embedded, marked by arrows in photograph A. The rock fragments are surrounded by empty rims resulting from differential thermal expansion and water loss at firing synæresis. In the clayey matrix of the body quartz grains, often cracked are embedded (marked by arrow in photograph A) and dark, oval aggregates (marked by arrows in photograph B). Clayey matrix forms a lattice structure.
A B JERZY TRZCIŃSKI, MAREK WRÓBEL AND LESZEK KIESZCZYŃSKI Mineralogical and Petrographic Study of Sigillata-type Pottery from Delos, Greece Fig. 10 Microphotographs of thin sections of sigillata from Delos, polarizing microscope, X-nicols. Fragments of clayey rocks, indicated by arrows: A) sample nr 21, magnification X 500; B) sample nr 37, magnification X 100.
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JERZY TRZCINSKI, MAREK WRÓBEL AND LESZEK KIESZCZYNSKI

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