TY - JOUR
T1 - An unusual kaolinite-calcite interaction
AU - Mackenzie, R. C.
AU - Heller-Kallai, L.
AU - Lachowski, E. E.
PY - 1991/5
Y1 - 1991/5
N2 - In a CO2 atmosphere, one particular sample of kaolinite from Cornwall, England, when mixed with calcite in the proportions 4:1 or greater gave a very small, sharp endotherm at 840-845°C on curves obtained on three differential thermal analysis instruments of different design. Scanning electron microscopy suggests that this endotherm is associated with surface melting or sintering of the calcite rhombs, but X-ray diffraction and infrared absorption spectrometry reveal that other changes also occur. It is suggested that volatiles evolved from the kaolinite initiate a series of complex reactions.
AB - In a CO2 atmosphere, one particular sample of kaolinite from Cornwall, England, when mixed with calcite in the proportions 4:1 or greater gave a very small, sharp endotherm at 840-845°C on curves obtained on three differential thermal analysis instruments of different design. Scanning electron microscopy suggests that this endotherm is associated with surface melting or sintering of the calcite rhombs, but X-ray diffraction and infrared absorption spectrometry reveal that other changes also occur. It is suggested that volatiles evolved from the kaolinite initiate a series of complex reactions.
UR - http://www.scopus.com/inward/record.url?scp=0026358278&partnerID=8YFLogxK
U2 - 10.1016/0169-1317(91)90011-W
DO - 10.1016/0169-1317(91)90011-W
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AN - SCOPUS:0026358278
SN - 0169-1317
VL - 6
SP - 69
EP - 77
JO - Applied Clay Science
JF - Applied Clay Science
IS - 1
ER -