Authors:

Laboratory tests show that five underclays from western and southwestern Indiana are potential sources of bonding clay for foundaries. Green dry strength tests were determined for each sample, and the results of these tests were compared with the results of tests obtained from a commercially used bonding clay. The particle-size distribution and the mineral composition of the underclays are most important in interpreting the results of physical tests. The samples which had a high clay content and a rather high percentage of montmorillonite produced the best green and dry strength test results. Five areas in Indiana are most favorable for commercial production of bonding clays.



Murray, H. H., 1957, Pennsylvanian underclays—potential bonding clays for use in foundries: Indiana Geological Survey Report of Progress 11, 27 p., 6 figs.


You may also like:

Keywords: clay, shale, industrial minerals

Can't find what you're looking for? Feel free to contact us directly:

Indiana Geological and Water Survey
420 N. Walnut St.
Bloomington, IN 47404
812-855-7636 (phone)
812-855-2862 (fax)
IGWSinfo@indiana.edu

IGS Return Policy

  • Original sales receipt required.
  • Returns accepted within 30 days of purchase date.
  • Refund will be issued by the same method of payment as purchased.
  • Products must be returned in the same new condition as purchased.
  • Refunds on custom orders and digital products are NOT allowed.
  • Customers are responsible for paying shipping costs to return products.

Updated 8/19/2020