118 



BUILDING STONES OF QUEENSLAND. 



12, plate IX). Like most sandstones it hardens on exposure 

 but the cementing medium is too abundant and con- 

 sequently the binding projDertj' of the cement is weak. In 

 colour it \aries from greyish-white to light brown according 

 to the amount of iron- staining it has undergone. 



The sandstone is nearh- horizontal^ bedded and occurs 

 near the base of the Ipswich series of coal-measures of 

 Triassic age. It has been used extensiveh' and where it 

 has been kept free from moisture it has lasted reasonably 

 well, but where it has been used in base courses and allowed 

 to become wet it has fretted aAvay badI3^ Like all 

 sedimentarj' stones, great variation exists in the different 

 beds and even in different parts of the same bed : the 

 result is that both good and poor stones have been obtained 

 from here. 



Fig. 15. St. Stephen's Ro.man Catholic Cathedral, Brisbajne. 



View from Elizabeth Street. Erected 1874 : main structure of 

 Brisbane tuff. Facings of sandslone from Breakfast Creek. Old build- 

 ing on right built 1860-01 of sandstone from Geaiy's quarry, Goodna. 



