Along Pillar Lake road, light brown and very calcareous clay occurs. The clay has the following characteristics (Bulletin 30, page 50):
---------------------------------------------------------------------
Workability - 30.8 per cent water; very plastic
Drying Characteristics - Safe drying at 85 degrees Celsius; average
shrinkage, 8.3 per cent
Firing Characteristics -
Cone 08 Cone 06 Cone 04 Cone 02
Absorption 16.2 16.0 5.6 2.8
Shrinkage 0.3 0.5 5.5 6.8
Colour Dark salmon Dark salmon Dark salmon Brown-red
Miscellaneous Fairly hard Fairly hard, Very hard Very hard
scummed
----------------------------------------------------------------------
Remarks - P.C.E.=3.5. Suitable for common brick and tile.
