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Definition of Plagioclase
1. Noun. Any of a series of triclinic feldspars that form rocks.
Substance meronyms: Dacite, Basalt
Generic synonyms: Feldspar, Felspar
Specialized synonyms: Albite, White Feldspar, Anorthite
Derivative terms: Plagioclastic
Definition of Plagioclase
1. n. A general term used of any triclinic feldspar. See the Note under Feldspar.
Definition of Plagioclase
1. Noun. (minerology) Any of a group of feldspar minerals that form a solid solution series from albite (sodium aluminum silicate) to anorthite (calcium aluminum silicate). The plagioclase feldspars are found in igneous, plutonic, and metamorphic rocks. They all have the triclinic-pinacoidal crystal habit, but only Albite commonly occurs in well crystallized specimens. ¹
¹ Source: wiktionary.com
Definition of Plagioclase
1. [n -S]
Medical Definition of Plagioclase
1.
Lexicographical Neighbors of Plagioclase
Literary usage of Plagioclase
Below you will find example usage of this term as found in modern and/or classical literature:
1. Annual ReportRailroads (1873)
"Dolerite, from head of Indian Creek, Colorado, composed of grains and crystals
of plagioclase and augite. No. 201. Dolerite, from South Fork of Cucharas ..."
2. Manual of Lithology: Treating of the Principles of the Science with Special by Edward Higginson Williams (1895)
"Combinations, varying from coarse granitoid to con pact, of predominant plagioclase,
a pyroxene, olivine, and magnetite in varying proportions. ..."
3. The History of Geological Surveys in Minnesota by Newton Horace Winchell (1889)
"Under the microscope it is seen to be composed of plagioclase with some probable
... The plagioclase, in places, exhibits its twinning only at the point .of ..."
4. Stones for Building and Decoration by George Perkins Merrill (1903)
"used for other purposes than rough construction, as is the case with the majority
of the younger eruptives. AUGITE (ENSTATITE, HYPERSTHENE) plagioclase ..."
5. Stones for Building and Decoration by George Perkins Merrill (1891)
"used for other purposes than rough construction, as is the case with the majority
of the younger eruptives. AUGITE (ENSTATITE, HYPERSTHENE) plagioclase ..."
6. The Rocks of Cape Colville Peninsula, Auckland, New Zealand by William Johnson Sollas, Alexander McKay (1906)
"Rhyolitic Glass, containing plagioclase. Illustration. ... plagioclase : A few
large and small crystals, broken and invaded by the quartzose matrix ; ri, ..."
7. Geological Magazine by Henry Woodward (1905)
"A section (1069) of the pyroxene further from the edge shows only colourless
diopside with a trace of plagioclase and green spinel. ..."
8. Annual ReportRailroads (1873)
"Dolerite, from head of Indian Creek, Colorado, composed of grains and crystals
of plagioclase and augite. No. 201. Dolerite, from South Fork of Cucharas ..."
9. Manual of Lithology: Treating of the Principles of the Science with Special by Edward Higginson Williams (1895)
"Combinations, varying from coarse granitoid to con pact, of predominant plagioclase,
a pyroxene, olivine, and magnetite in varying proportions. ..."
10. The History of Geological Surveys in Minnesota by Newton Horace Winchell (1889)
"Under the microscope it is seen to be composed of plagioclase with some probable
... The plagioclase, in places, exhibits its twinning only at the point .of ..."
11. Stones for Building and Decoration by George Perkins Merrill (1903)
"used for other purposes than rough construction, as is the case with the majority
of the younger eruptives. AUGITE (ENSTATITE, HYPERSTHENE) plagioclase ..."
12. Stones for Building and Decoration by George Perkins Merrill (1891)
"used for other purposes than rough construction, as is the case with the majority
of the younger eruptives. AUGITE (ENSTATITE, HYPERSTHENE) plagioclase ..."
13. The Rocks of Cape Colville Peninsula, Auckland, New Zealand by William Johnson Sollas, Alexander McKay (1906)
"Rhyolitic Glass, containing plagioclase. Illustration. ... plagioclase : A few
large and small crystals, broken and invaded by the quartzose matrix ; ri, ..."
14. Geological Magazine by Henry Woodward (1905)
"A section (1069) of the pyroxene further from the edge shows only colourless
diopside with a trace of plagioclase and green spinel. ..."
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