Profile through weathered granite, Red Hill, 20 km east of Perth,

Western Australia. Samples are from a lecture course of

Prof. R.T. Pidgeon, held 2000 in Heidelberg, Germany

• Medium grained granite with minor weathering   (RH 1)
• Saprolite - weathered medium grained granite with residual texture   (RH 2)
• bleached zone with accumulation of goethite patches. Residual texture is not evident.  (RH 3)
• bleached zone with goethite segregations and with dissolution channels     (RH 4)
• duricrust with hematite/goethite nodules in goethite/clay matrix with minor dissolution channels (RH 5)
• pisolitic laterite with well-developed onion-textured pisolites, and with nodular cores, set in an aluminous goethite matrix  (RH 6)                    
• loose pisolites, mounted and sectioned  (RH 7)