felspathic

Kafue, and then passed over ridges of rocks of the same mica schist which we found so abundant in Golungo Alto; here they were surmounted by reddish porphyry and finely laminated felspathic grit with trap.

Missionary Travels and Researches in South Africa 2004

The rock consisted here of the same felspathic sort characterising most of the hills of the Barwan basin; the soil sterile, bearing, in lieu of the ordinary grass, the stiff, hard leaved, glutinous TRIODIA PUNGENS.

Journal of an Expedition into the Interior of Tropical Australia 2003

They contrast curiously with the hard felspathic stones and the lithographic calcaires bearing the moss-like impress of metallic dendrites; these occur in many parts near the seaboard, and we found them in Southern as well as in Northern Midian.

The Land of Midian 2003

The rock was felspathic, apparently allied to those already seen in the Balonne.

Journal of an Expedition into the Interior of Tropical Australia 2003

The cone we had ascended consisted of trap rock, much resembling that of Mount Aquarius; but, at its base, and on its sides, I found in large masses, the very compact felspathic rock which characterises the valley of the Darling.

Journal of an Expedition into the Interior of Tropical Australia 2003

The same felspathic rock seen in other parts of this great basin, seems the basis of the clay, although the fragments imbedded are very hard.

Journal of an Expedition into the Interior of Tropical Australia 2003

If the outcropping strata be a soft calcareous (limy) sandstone or soft felspathic rock, and that be also the true bottom, great care should be exercised or one is apt to sink through the bottom, which may be very loose and decomposed.

Getting Gold: a practical treatise for prospectors, miners and students

Müntz, who discovered that the bare surfaces of felspathic, calcareous, schistose, and other rocks at the summit of mountains in the Pyrenees,

Manures and the principles of manuring Charles Morton Aikman

It must be remembered, however, that it is only the orthoclase or potash felspars which contain large quantities of potash -- other felspathic rocks, such as oligoclase and labradorite, being comparatively poor in it.

Manures and the principles of manuring Charles Morton Aikman

A very pure alum is produced in volcanic districts by the action of sulphurous acid and oxygen on felspathic rocks, and used by the ancients for different purposes.

Museum of Antiquity A Description of Ancient Life