Definition of Plagioclase

1. Noun. Any of a series of triclinic feldspars that form rocks.

Exact synonyms: Oligoclase
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. A general term used of any triclinic feldspar. See the Note under Feldspar. Origin: Gr. Oblique + to break. Source: Websters Dictionary (01 Mar 1998)

Plagioclase Pictures

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Lexicographical Neighbors of Plagioclase

plagiarization
plagiarize
plagiarized
plagiarizer
plagiarizers
plagiarizes
plagiarizing
plagiary
plagihedral
plagio-
plagiocephalic
plagiocephalies
plagiocephalism
plagiocephalous
plagioclase (current term)
plagioclases
plagioclasic
plagioclastic
plagioclimax
plagionite
plagiosere
plagioseres
plagiostomatous
plagiostome
plagiostomes
plagiostomi
plagiostomous
plagiotremata
plagiotropic

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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