from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Of, relating to, or containing feldspar.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Containing feldspar.
from the GNU version of the Collaborative International Dictionary of English
- adj. Pertaining to, or consisting of, feldspar.
from The Century Dictionary and Cyclopedia
- Pertaining to feldspar or containing it: an epithet applied to any mineral in which feldspar predominates. Also written felspathic.
The rock here is a porphyritic granite (porhyritic meaning that the stone has large-grained crystals, such as feldspar or quartz, dispersed in a fine-grained feldspathic matrix or groundmass).
And as far as craftsmanship, depending on which cosmetic dentist you go to, he or she will work with porcelain veneers fabricated by a machine out of Lucite, or porcelain veneers handcrafted out of feldspathic porcelain by a master artist (yes, I call the people who do this type of work artists.)
The composition is what we ceramic engineers call Âfeldspathic.
The Northern Inner Piedmont (45e) is characteristically underlain by highly deformed and deeply weathered Cambrian and Proterozoic feldspathic gneiss, schist, and melange.
Between the heavy clays and blue mud of the mangrove swamps and the granite and sandstone of the mountain ranges, the undulating rises are mainly composed of red clay, sandstones, shales, and granitic and feldspathic rocks, with extensive deposits of laterite in red clays on the surface.
Near the coast the rough lava is quite bare: in the central and higher parts feldspathic rocks by their decomposition have produced
Its mineralogical constitution is not simple; in some parts the rock is of a cherty, in others of a feldspathic nature, including thin veins of serpentine.
The first true porcelain with high-fired feldspathic glaze probably dates from about this time.
Sienite and feldspar succeeded in our descent to the snow line, where we found a feldspathic granite.
English bone porcelains are very beautiful, and though they are not genuine feldspathic products they are highly esteemed and in demand everywhere.