The name feldspar is a contraction of the longer name fieldspar, as some early specimens were found in fields. From Wordnik.com. [Feldspar] Reference
In the process of weathering, the softer, weaker minerals in granite (such as feldspar) are weathered away. From Wordnik.com. [Sand and gravel] Reference
Melters such as feldspar, whiting (or limestone) and talc are sufficient for the higher temperatures above 1200. From Wordnik.com. [2. Kilns] Reference
Natural resources: outstanding deepwater harbor, feldspar. From Wordnik.com. [The 1999 CIA Factbook] Reference
It is the metallic base of mica, feldspar, slate, and clay. From Wordnik.com. [Scientific American Supplement, No. 531, March 6, 1886] Reference
Kaolin has been created by the decomposition of feldspar (fig. 1-2). From Wordnik.com. [1. Refractories] Reference
This is the beginning of the process of changing feldspar into clay. From Wordnik.com. [Chapter 5] Reference
The formation of clay from feldspar can be written in chemical symbols. From Wordnik.com. [5. Simple glaze theory] Reference
Usually a blend of lightweight silicates – feldspar, olivine, pyroxene. From Wordnik.com. [Deception Point]
A mixture of different clays and other materials like grog, feldspar and talc. From Wordnik.com. [Chapter 13] Reference
Instead of adding feldspar as a vitrifier it is cheaper to add a more fusible clay. From Wordnik.com. [Chapter 9] Reference
These may be mining companies that can supply specific items like clay and feldspar. From Wordnik.com. [6. Obtaining glaze materials] Reference
Filter element (composition): 55 - 65% loam, 30 - 35% crushed feldspar, 5-10% sawdust. From Wordnik.com. [3. Technologies] Reference
Other impurities like feldspar, mica and lime - stone lower the melting point of clay. From Wordnik.com. [Chapter 5] Reference
At cone 8 to 11, a good starting point is 2 parts ash, 2 parts feldspar and 1 part clay. From Wordnik.com. [6. Obtaining glaze materials] Reference
Fig. 1-2: Exposed to the action of weather the feldspar rock is slowly changed into clay. From Wordnik.com. [1. Refractories] Reference
Labradorite, the reader may know, is a crystallized feldspar, with traces of other minerals. From Wordnik.com. [The Atlantic Monthly, Volume 15, No. 87, January, 1865] Reference
It appears to be a decomposed trachyte, in which the feldspar has been affected, but not the mica. From Wordnik.com. [The South of France—East Half] Reference
Sienite and feldspar succeeded in our descent to the snow line, where we found a feldspathic granite. From Wordnik.com. [The Life and Adventures of Kit Carson, the Nestor of the Rocky Mountains, from Facts Narrated by Himself] Reference
Her hair should hang loosely over the shoulders, the head encircled with a string of feldspar or pearl beads. From Wordnik.com. [Home Pastimes; or Tableaux Vivants] Reference
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