soap-rock

The river had a soap-rock bottom that was free of silt and was green and cold and fed by springs even in August, and pooled with shadows from the giant trees that grew along the bank.

Rain Gods James Lee Burke 2009

The river had a soap-rock bottom that was free of silt and was green and cold and fed by springs even in August, and pooled with shadows from the giant trees that grew along the bank.

Rain Gods James Lee Burke 2009

The river had a soap-rock bottom that was free of silt and was green and cold and fed by springs even in August, and pooled with shadows from the giant trees that grew along the bank.

Rain Gods James Lee Burke 2009

The stones which they used were oblong, and pointed at each end, being made of a soft and unctuous soap-rock

A General History and Collection of Voyages and Travels — Volume 14 Robert Kerr 1784

The soap-rock, which h is the property of fuller's earth in cleansing cloth, is found here; also alum ore, free-stone fit for building, and a grey-stone, in great demand for mill-stones, reckoned equal in

The geographical and historical dictionary of America and the West Indies : containing an entire translation of the Spanish work of Colonel Don Antonio de Alcedo...with large additions and compilations from modern voyages and travels, and from original and authentic information 1812