orthoclase


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Related to orthoclase: biotite, albite, microcline

or·tho·clase

 (ôr′thə-klās′, -klāz′)
n.
A white to yellowish red monoclinic mineral of the potassium feldspar group that forms from medium- to low-temperature magmas.

[Greek ortho-, ortho- + Greek klasis, a breaking (from klān, to break).]

orthoclase

(ˈɔːθəʊˌkleɪs; -ˌkleɪz)
n
(Minerals) a white to pale yellow, red, or green mineral of the feldspar group, found in igneous, sedimentary, and metamorphic rocks. It is used in the manufacture of glass and ceramics. Composition: potassium aluminium silicate. Formula: KAlSi3O8. Crystal structure: monoclinic

or•tho•clase

(ˈɔr θəˌkleɪs, -ˌkleɪz)

n.
a common white or pink potassium feldspar mineral, KAlSi3O8, having two good cleavages at right angles, and found in silica-rich igneous rocks.
[1840–50]

or·tho·clase

(ôr′thə-klās′)
A type of feldspar consisting of potassium aluminum silicate. Orthoclase is typically white, pink, yellow, or brown, but it can also be colorless. It is especially common in igneous rocks.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.orthoclase - a white or colored monoclinic feldsparorthoclase - a white or colored monoclinic feldspar
feldspar, felspar - any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium
Translations
References in periodicals archive ?
Feldspars are mainly represented by microcline and albite, followed by orthoclase and sanidine in some samples (Table 1).
2002, Heat transfer in quartz, orthoclase, and sanidine at elevated temperature.
The Jongju Complex consists of six elongated multiple intrusions, mainly alkali pyroxenite, orthoclase pyroxenite, alkali gabbro, pegmatite and lamprophyre.
Plagioclase feldspars contain various proportions of sodium and calcium, but usually more sodium than calcium, while orthoclase contains potassium and no sodium (https://www.
Results of X-ray diffraction analysis of 52 stratified samples collected between 58-18 m indicated a mineralogical composition consisting mostly of quartz, muscovite, albite, clinochlore, calcite, and orthoclase (details in Giudice 2005; Dickinson 2008).
IC-14-53 and 54 demonstrate the intensive and extensive potassic alteration, characterized by secondary orthoclase and abundant quartz-feldspar-sulfide veins, which confirm the presence of a core zone and should lead to better grades at depth.
Compositionally alkali feldspar exposed in Mansehra area is mainly composed of albeit and microcline with some orthoclase [22].
Raw Materials (%) by weight Boric acid 20 Orthoclase 20 Quartz 15 Calcite 5 Soda Ash 10 Kaolin 4 Zinc Oxide 4 Cullet * 22 Total 100 * The composition of the cullet: 68.
XRD analysis revealed that Sevier Shale is composed of quartz, orthoclase, microcline, calcite, gypsum, chlorite, illite, and mixed layers of kaolinitemontmorillonite (Fig.
silica, feldspar, gypsum, orthoclase, apatite, halite, calcite, dolomite, quartz, biotite.