microclinen.

Brit.

/ˈmʌɪkrə(ʊ)klʌɪn/, U.S.

/ˈmaɪkroʊˌklaɪn/,

/ˈmaɪkrəˌklaɪn/

Origin: A borrowing from German. Etymon: German Mikroklin.

Etymology: < German Mikroklin (A. Breithaupt 1830, in Jrnl. f. Chem. u. Physik 60 324) < mikro- micro- comb. form + ancient Greek κλιν- (in κλίνειν to incline: see clino- comb. form), as indicating slight deviation from orthorhombic symmetry. Compare pericline n.

Mineralogy.

A triclinic potassium feldspar dimorphous with orthoclase, forming large translucent crystals of a green, reddish, or grey colour, and characteristic of granites and pegmatites.

ΘΚΠ

the world > the earth > minerals > types of mineral > silicates > tectosilicate > [noun] > feldspar > microclime

microcline1849

1849 H. Watts tr. L. Gmelin Hand-bk. Chem. III. 442 Microcline [has] precisely the same composition as felspar.

1888 F. H. Hatch in J. J. H. Teall Brit. Petrogr. 439 Microcline structure. The mineral microcline shows..a cross hatching.

1902 H. A. Miers Mineral. ii. 459 Microcline is the name given to anorthic potash felspar.

1949 Econ. Geol. 44 174 In the diorite facies the microcline is generally only slightly perthitic..whereas in the syenitic rock it is ordinarily highly perthitic.

1990 C. Pellant Rocks, Minerals & Fossils 92 Microcline is a triclinic form of orthoclase which under the microscope shows characteristic ‘cross-hatched’ patterns because of repeated twinning.

This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022).

单词	microcline
释义	microclinen. Brit. /ˈmʌɪkrə(ʊ)klʌɪn/, U.S. /ˈmaɪkroʊˌklaɪn/, /ˈmaɪkrəˌklaɪn/ Origin: A borrowing from German. Etymon: German Mikroklin. Etymology: < German Mikroklin (A. Breithaupt 1830, in Jrnl. f. Chem. u. Physik 60 324) < mikro- micro- comb. form + ancient Greek κλιν- (in κλίνειν to incline: see clino- comb. form), as indicating slight deviation from orthorhombic symmetry. Compare pericline n. Mineralogy. A triclinic potassium feldspar dimorphous with orthoclase, forming large translucent crystals of a green, reddish, or grey colour, and characteristic of granites and pegmatites. ΘΚΠ the world > the earth > minerals > types of mineral > silicates > tectosilicate > [noun] > feldspar > microclime microcline1849 1849 H. Watts tr. L. Gmelin Hand-bk. Chem. III. 442 Microcline [has] precisely the same composition as felspar. 1888 F. H. Hatch in J. J. H. Teall Brit. Petrogr. 439 Microcline structure. The mineral microcline shows..a cross hatching. 1902 H. A. Miers Mineral. ii. 459 Microcline is the name given to anorthic potash felspar. 1949 Econ. Geol. 44 174 In the diorite facies the microcline is generally only slightly perthitic..whereas in the syenitic rock it is ordinarily highly perthitic. 1990 C. Pellant Rocks, Minerals & Fossils 92 Microcline is a triclinic form of orthoclase which under the microscope shows characteristic ‘cross-hatched’ patterns because of repeated twinning. This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022). < n.1849
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