åkermaniten.

Brit.

/ˈɔːkəmənʌɪt/,

/ˈakəmənʌɪt/, U.S.

/ˈɔkərməˌnaɪt/,

/ˈækərməˌnaɪt/

Forms: 1800s– åkermanite, 1800s– akermanite.

Origin: From a proper name, combined with an English element; modelled on a German lexical item. Etymons: proper name Åkerman , -ite suffix¹.

Etymology: < the name of Richard Åkerman (1837–1922), Swedish metallurgist + -ite suffix¹, after German Åkermanit (I. H. L. Vogt 1890, in Arch. for math. og naturvidenskab 13 323).

Mineralogy.

A mineral of the melilite group, occurring typically as blocky prisms in siliceous limestone and dolomite rocks and in blast-furnace slags.Åkermanite is an aluminosilicate of calcium and magnesium, Ca₂MgSi₂O₇. Crystal system: tetragonal.

ΘΚΠ

the world > the earth > minerals > types of mineral > silicates > miscellaneous silicates > [noun] > other silicates of two elements

bustamite1830

nickel-gymnite1853

uranophane1861

genthite1867

howlite1868

uranotile1871

peckhamite1880

kentrolite1882

melanotekite1882

åkermanite1890

molybdophyllite1901

ramsayite1924

truscottite1925

reedmergnerite1954

1890 Amer. Jrnl. Sci. 140 336 Åkermanite.—A lime-magnesia silicate, containing no alumina, and belonging to the tetragonal system like melilite... It is not known in nature but has been obtained by Vogt.

1920 Amer. Jrnl. Sci. 200 131 The compound 2CaO.MgO.2SiO₂ was discovered by Ferguson and Merwin... The mineral åkermanite was thought by them to consist essentially of this compound.

1975 Sci. Amer. Feb. 33/1 Melilite is a mineral whose composition can vary continuously between Ca₂Al₂SiO₇, known as gehlenite, and Ca₂MgSi₂O₇, known as akermanite.

1990 Jrnl. Petrol. 31 557 Many of these minerals, including wollastonite, monticellite, and akermanite, are characteristic of low pressure.

2004 W. D. Nesse Introd. Optical Mineral. (ed. 3) xiii. 226/1 Complete solid solution extends between gehlenite [Ca₂Al(AlSiO₇)] and åkermanite (Ca₂MgSi₂O₇).

This entry has been updated (OED Third Edition, September 2012; most recently modified version published online December 2021).

单词	åkermanite
释义	åkermaniten. Brit. /ˈɔːkəmənʌɪt/, /ˈakəmənʌɪt/, U.S. /ˈɔkərməˌnaɪt/, /ˈækərməˌnaɪt/ Forms: 1800s– åkermanite, 1800s– akermanite. Origin: From a proper name, combined with an English element; modelled on a German lexical item. Etymons: proper name Åkerman , -ite suffix¹. Etymology: < the name of Richard Åkerman (1837–1922), Swedish metallurgist + -ite suffix¹, after German Åkermanit (I. H. L. Vogt 1890, in Arch. for math. og naturvidenskab 13 323). Mineralogy. A mineral of the melilite group, occurring typically as blocky prisms in siliceous limestone and dolomite rocks and in blast-furnace slags.Åkermanite is an aluminosilicate of calcium and magnesium, Ca₂MgSi₂O₇. Crystal system: tetragonal. ΘΚΠ the world > the earth > minerals > types of mineral > silicates > miscellaneous silicates > [noun] > other silicates of two elements bustamite1830 nickel-gymnite1853 uranophane1861 genthite1867 howlite1868 uranotile1871 peckhamite1880 kentrolite1882 melanotekite1882 åkermanite1890 molybdophyllite1901 ramsayite1924 truscottite1925 reedmergnerite1954 1890 Amer. Jrnl. Sci. 140 336 Åkermanite.—A lime-magnesia silicate, containing no alumina, and belonging to the tetragonal system like melilite... It is not known in nature but has been obtained by Vogt. 1920 Amer. Jrnl. Sci. 200 131 The compound 2CaO.MgO.2SiO₂ was discovered by Ferguson and Merwin... The mineral åkermanite was thought by them to consist essentially of this compound. 1975 Sci. Amer. Feb. 33/1 Melilite is a mineral whose composition can vary continuously between Ca₂Al₂SiO₇, known as gehlenite, and Ca₂MgSi₂O₇, known as akermanite. 1990 Jrnl. Petrol. 31 557 Many of these minerals, including wollastonite, monticellite, and akermanite, are characteristic of low pressure. 2004 W. D. Nesse Introd. Optical Mineral. (ed. 3) xiii. 226/1 Complete solid solution extends between gehlenite [Ca₂Al(AlSiO₇)] and åkermanite (Ca₂MgSi₂O₇). This entry has been updated (OED Third Edition, September 2012; most recently modified version published online December 2021). < n.1890
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