Crossword-Solution: FELSPAR 7 letters, 3 clues 🏆 scrabble score: 12

The bottom now rose sensibly, and we soon arrived at long circuitous slopes, or inclined planes, which took us higher by degrees; but we were obliged to walk carefully among these conglomerates, bound by no cement, the feet slipping on the glassy crystal, felspar, and quartz.

And in the dusty biscuit-making place of the potters, among the felspar mills in the furnace rooms of the metal workers, among the incandescent lakes of crude Eadhamite, the blue canvas clothing was on man, woman and child.

Three barges, smothered in floury dust, were being unloaded of their cargoes of powdered felspar by a multitude of coughing men, each guiding a little truck; the dust filled the place with a choking mist, and turned the electric glare yellow.

Obviously, at each step the percentage of felspar and phosphorus is less and less until in the final concentrates the percentage of iron oxide is 91 to 93 per cent.

When we come to study the chemical composition and the microscopical structure of lavas, however, we shall find that there are many respects in which they differ entirely from these artificial products, they consisting chiefly of felspar, or of this substance in association with augite or hornblende.