petrosilex

We travelled the whole morning across a plain composed chiefly of petrosilex.

Travels in Nubia 2004

The ground now became gravelly, covered with small black flints and petrosilex, a dark expanse of waste much resembling some parts of the desert of Tyh.

Travels in Nubia 2004

The floor was here of white petrosilex, there of grey granite, variegated with squares and lozenges, drops and pineapples, red, green, neutral tinted, and disposed by oxides of iron and copper in natural designs that looked artificial.

The Land of Midian 2003

The plain upon which we encamped is sandy, covered with small pebbles and petrosilex.

Travels in Arabia 2003

After thirty minutes 'walk up the southern plane of the prism, composed of gypseous and coralline rocks, veins of white petrosilex resembling broken columels, streaks of magnetic black sand, and scatters of grit and harder stones, we reached the summit of the little ridge.

The Land of Midian — Volume 1 Richard Francis Burton 1855

The floor was here of white petrosilex, there of grey granite, variegated with squares and lozenges, drops and pineapples, red, green, neutral tinted, and disposed by oxides of iron and copper in natural designs that looked artificial.

The Land of Midian — Volume 1 Richard Francis Burton 1855

At the end of an hour, the limestone terminated, and the road was covered with flints, petrosilex, and Egyptian pebbles; here are also found spe­cimens of petrified wood, the largest about

Travels in Syria and the Holy Land 1822

At the end of an hour, the limestone terminated, and the road was covered with flints, petrosilex, and Egyptian pebbles; here are also found spe­cimens of petrified wood, the largest about

Travels in Syria and the Holy Land 1822

We continued our route E. by S. over an uneven and somewhat hilly country covered with black petrosilex; and after a day’s march of eight hours and a quarter, we halted in a valley of little depth, called Wady

Travels in Syria and the Holy Land John Lewis Burckhardt 1800

The plain upon which we encamped is sandy, covered with small pebbles and petrosilex.

Travels in Arabia; comprehending an account of those territories in Hedjaz which the Mohammedans regard as sacred John Lewis Burckhardt 1800