felspathic

[ fel-spath-ik ]

/ fɛlˈspæθ ɪk /

feldspathic.

Words nearby felspathic

In composition it is extremely different from basalt, this being a felspathic, as the other is an augitic, rock.

A Manual of Elementary Geology |Charles Lyell.
The cement of the sandstones is often felspathic; for this reason they yield useful porcelain clays in the Thuringerwald.

Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 |Various
The hills behind consisted in the higher parts of a felspathic conglomerate and clay-slate dipping to the eastward.

Three Expeditions into the Interior of Eastern Australia, Vol 2 (of 2) |Thomas Mitchell
When a fragmental rock is composed chiefly of rocks belonging to the acidic group, we say it is felspathic.

Geology |James Geikie

Pebbles of felspathic porphyry were found in the river's bed.

Journal of an Overland Expedition in Australia |Ludwig Leichhardt