Definition of Oligoclase

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

Exact synonyms: Plagioclase
Substance meronyms: Dacite, Basalt
Generic synonyms: Feldspar, Felspar
Specialized synonyms: Albite, White Feldspar, Anorthite
Derivative terms: Plagioclastic



Definition of Oligoclase

1. n. A triclinic soda-lime feldspar. See Feldspar.

Definition of Oligoclase

1. Noun. (minerology) A plagioclase feldspar, the second member of the Albite-Anorthite solid solution series. Primarily found as small crystals in impure marble. Oligoclase contains a small amount of calcium substituting for some of the sodium in its formula. Oligoclase with reddish-golden inclusions found in Norway and Canada is called ''sunstone''. ¹

¹ Source: wiktionary.com

Definition of Oligoclase

1. [n -S]

Medical Definition of Oligoclase

1. A triclinic soda-lime feldspar. See Feldspar. Origin: Oligo- + Gr. Fracture, fr. To break. Source: Websters Dictionary (01 Mar 1998)

Oligoclase Pictures

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Lexicographical Neighbors of Oligoclase

oligoarticular
oligoastrocytoma
oligocellular
oligocene
oligochaeta
oligochaete
oligochaete worm
oligochaetes
oligochaetologist
oligochaetologists
oligochete
oligochitosan
oligocholia
oligochylia
oligochymia
oligoclase (current term)
oligoclases
oligoclonal
oligoclonal band
oligocyclopropyl
oligocystic
oligodactyly
oligodendria
oligodendroblast
oligodendroblastoma
oligodendroctye
oligodendroctyes
oligodendrocyte
oligodendrocytes
oligodendroglia

Literary usage of Oligoclase

Below you will find example usage of this term as found in modern and/or classical literature:

1. Elements of Chemical and Physical Geology by Gustav Bischof (1859)
"oligoclase contains less lime than labradorite, and albite scarcely any, ... The presence of oligoclase, or labradorite, or of both, in the greyish white ..."

2. Lectures on Mineralogy: Delivered at the School of Mines, Columbia College by Thomas Egleston (1886)
"oligoclase is sometimes found in perfect crystals, which resemble Ortho- clase ... When the mass is greenish it is probably oligoclase, but when the mass is ..."

3. Descriptive Mineralogy by William Shirley Bayley (1917)
"Excellent crystals of oligoclase occur at Arendal and at other places in Norway; and at McComb and Fine, in St. Lawrence Co., NY Potash-oligoclase occurs in ..."

4. Bulletin by North Carolina Dept. of Conservation and Development, North Carolina Geological Survey (1883-1905), North Carolina Geological and Economic Survey (1907)
"Frank W. Clarke, made from a faint green variety, shows it to be a typical oligoclase. The specific gravity waa determined to be 2.651. ..."

5. Reports of the North Carolina Geological and Economic Survey (1905)
"oligoclase. This mineral has been found at the Corundum Hill mine, where it is associated with black tourmaline: it has also been found at the Carter mine ..."

6. Igneous Rocks: Composition, Texture and Classification, Description and by Joseph Paxson Iddings (1913)
"It contains phenocrysts of sani- dine and andesine, pale green pyroxene, and dark-bordered hornblende. The groundmass consists of oligoclase, ..."

7. The Edinburgh New Philosophical Journal (1846)
"The so-called Red Albite of Kimito is an oligoclase.—Chod- new has analysed (in Professor Henry Rose's ... and he has ascertained that it is an oligoclase. ..."

8. A Dictionary of Chemistry and the Allied Branches of Other Sciences by Henry Watts (1866)
"In oligoclase from the Ural (c), and some others, the proportion of alumina appears to be considerably greater ; this may arise from loss of alkalis by ..."

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