(n.) Common or potash feldspar crystallizing in the monoclinic system and having two cleavages at right angles to each other. See Feldspar.
Example Sentences:
(1) The authors have found out that fly-ashes included mainly quartz, orthoclase and mullite.
(2) These strains possess better ability to utilize the orthoclase and biotite.
(3) All the ashes have been found to contain: quartz and mullite, 3 ashes contained additionally orthoclase, whereas 1, apart from quartz and mullite, contained kaolinite; naturally radioactive elements (Ra226, K40, Th228) and trace elements (As, Ba, Be, Cd, Ce, Cu, Fe, Pa, Mo, Ni, Pb, Se, U Zu).
(4) In all ash samples alpha-quartz and mullite were found: in some of them also kaolinite and orthoclase were traced.
(5) The following crystalline phases were determined in the materials: kaolinite, illite, quartz, orthoclase and microline.
(6) It was impossible to ascertain whether these synthetic crystals may be sanidine, orthoclase, or microcline.
Sanidine
Definition:
(n.) A variety of orthoclase feldspar common in certain eruptive rocks, as trachyte; -- called also glassy feldspar.
Example Sentences:
(1) Fibrous dusts (chrysotile, glass fibers, nemalite, palygorscite, and gypsum) and granular dusts (actinolite, biotite, hematite, pectolite, sanidine, and talcum) were injected intraperitoneally into rats.
(2) It was impossible to ascertain whether these synthetic crystals may be sanidine, orthoclase, or microcline.