felspar

From what has been said regarding the richness in potash of certain commonly occurring minerals, such as felspar, it is only natural to infer that most soils must contain large quantities of this substance; and this is so.

Manures and the principles of manuring Charles Morton Aikman

Among the mineral productions is a kind of felspar, which, when polished, exhibits a display of brilliant and beautiful colours.

Travels in North America, From Modern Writers With Remarks and Observations; Exhibiting a Connected View of the Geography and Present State of that Quarter of the Globe William Bingley 1798

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.

When the Sleeper Wakes 2006

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.

When the Sleeper Wakes 2006

These consisted chiefly of quartz, felspar, and a silicious petrifaction of woody appearance.

Journal of an Expedition into the Interior of Tropical Australia 2003

At one place irregular concretions of milk-white quartz, cemented by a ferruginous basis, was predominant; at another, the rough surface of compact felspar weathering white presented merely the cavities in which large rounded pebbles had been imbedded, until the partial decomposition of the felspar, under the river floods, had exposed them once more to the action of water.

Journal of an Expedition into the Interior of Tropical Australia 2003

On the sea beach I found masses of conglomerate formation, and in the trap occasional lamina of felspar.

Narrative of an expedition undertaken for the exploration of the country lying between Rockingham Bay and Cape York 2003

We crossed one or two slight elevations wholly composed of compact felspar in blocks — forming ridges resembling an outcrop of strata, whereof the strike always pointed N.W. and S. E.

Journal of an Expedition into the Interior of Tropical Australia 2003

Some of the heights are of greenish-yellow chloritic felspar, well adapted for brick-making.

The Land of Midian 2003

To this period belong the felspar, syenites, and porphyries.

Journey to the Interior of the Earth 2003