Abstracts

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Iron in the structure of some clay minerals and its extraction with 15% H₂SO₄ in the light of Mossbauer spectroscopy
KRZYSZTOF BAHRANOWSKI, STANISŁAW DUBIEL, LESZEK STOCH
pp 3-14

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Grain size analysis and clay minerals of the Nile bottom sediments, Egypt
AHMAD M. MORSY
pp 15-25

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Crystallochemical properties of synthetic OH^- and Cl^- forms of sodalite
JERZY FIJAŁ, MAREK TOKARZ
pp 27-45

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The role of thermal analysis in mineralogical studies. Part III. Hannay's experiments in evolved gas analysis, 1875-1879
ROBERT H. S. ROBERTSON
pp 47-52

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Thermoluminescent studies and identification of point defects in Al(OH)₃ and Al₂O₃
CZESŁAW OSTROWSKI, JAN MOCHNIAK
pp 53-60

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Influence of chloride ions on crystal growth of corundum during calcination of hydrargillite
LEOKADIA KUCHARSKA, ANDRZEJ SZYMAŃSKI
pp 61-67

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The replacement of rutile by chalcocite in the Zechstein copper ores of the Fore-Sudetic monocline
HENRYK KUCHA, WOJCIECH MAYER, ADAM PIESTRZYŃSKI, ANDRZEJ WIECZOREK
pp 69-73

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On the continuity of the solid solution series smithsonite-siderite
BOGUSLAW BˇK, WITOLD ŻABIŃSKI
pp 75-80

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Irena Kardymowicz (1899-1980)
K. RADLICZ, Z. WÓJCIK
pp 81-87

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Marian Kamieński (1901-1980)
A. KUBICZ
pp 89-92

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