alkali feldspar

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Any of several feldspar minerals containing alkali metals and little calcium. Plagioclase, orthoclase and microcline are alkali feldspars.

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Words nearby alkali feldspar

What appears to be ground glass is only the little crystals or small particles of alkali that have not been dissolved.
Tobacco; Its History, Varieties, Culture, Manufacture and Commerce|E. R. Billings.
He was one of the men to whom alkali is a constant poison, and his lips were always cracked and bleeding.
Mystery Ranch|Arthur Chapman
He had come away in the sour mood of a thirsty man who finds an alkali spring sparkling deceptively under a rock.
Cabin Fever|B. M. Bower
Talpers flushed angrily, and then grinned, until his alkali-cracked lips glistened in the lamplight.
Mystery Ranch|Arthur Chapman

Now, cations other than the alkali ions are liable to interfere with tests designed for alkaline or neutral solutions.
The Elements of Qualitative Chemical Analysis, vol. 1, parts 1 and 2.|Julius Stieglitz