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ESN 1980-A

Potential industrial clays of Alberta : a preliminary assessment, Part II

From the same area, samples of Kaskapau Formation dry well, firing range is moderate to long, and the milk chocolate brown colour could be acceptable in "earth colour" pottery or structural clay products. A sample from the Bearpaw Formation in the ... Show Abstract

Scafe, D.W.  1980-01-01

ESN 1978-A

Potential industrial clays of Alberta : a preliminary assessment, Part I

Abstract: In Alberta most rocks older than the Kootenay Formation (Jurassic - Lower Cretaceous) are unsuitable for ceramic purposes because of their coarse-grained, siliceous, or carbonate natures. One hundred and eighteen samples of the younger shales, mudstones, or clays were tested from 51 easily-accessible locations. Clays from the Luscar Formation show the most potential as they work well, extrude well, and dry well in addition to firing to an appealing dark chocolate colour at the end of a moderate firing range. Moderate potential exists for Kootenay, Dunvegan, Brazeau, and Paskapoo Formation clays if they can be blended with other clays to improve drying and firing characteristics. Little potential exists for Blairmore Group, and Kaskapau, Wapiabi, Horseshoe Canyon, or Porcupine Hills Formation clays because of poor drying characteristics and short firing ranges. Pleistocene lacustrine clays generally dry poorly and have a short firing range. A deposit of Pleistocene clay from the Edmonton area, which has better than average drying characteristics and which has firing characteristics that are improved with the addition of prefired clay "grog," is used in brick manufacture. Place Keywords 72e 72l 72m 73d 73e 73l 73m 74d 74e 74l 74m 82g 82h 82i 82j 82n 82o 82p 83a 83b 83c 83d 83e 83f 83g 83h 83i 83j 83k 83l 83m 83n 83o 83p 84a 84b 84c 84d 84e 84f 84g 84h 84i 84j 84k 84l 84m 84n 84o 84p alberta canada Theme Keywords ceramic clay geology mudstone shale

Scafe, D.W.  1978-01-01