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单词 allomorphite
释义

allomorphiten.

Brit. /ˌaləˈmɔːfʌɪt/, U.S. /ˌæləˈmɔrˌfaɪt/
Origin: A borrowing from German. Etymon: German Allomorphit.
Etymology: < German Allomorphit (A. Breithaupt 1838, in Jrnl. f. prakt. Chemie 15 322) < ancient Greek ἀλλόμορϕος of strange shape ( < ἀλλο- allo- comb. form + -μορϕος -morph comb. form), with reference to the similarity of the mineral to anhydrite in form and cleavage + German -it -ite suffix1.
Mineralogy. rare. Now disused.
A form of barite that is pseudomorphous after anhydrite.
ΘΚΠ
the world > the earth > minerals > types of mineral > sulphates > [noun] > barium sulphate
liverstone1587
ponderous spar1618
cauk1653
cawk1653
ponderous earth1780
baroselenite1786
barytes1789
heavy spar1789
terra ponderosa1794
hepatite1802
allomorphite1842
1842 Amer. Jrnl. Sci. 42 386 The indefatigable mineralogist, Breithaupt, has, according to Berzelius's annual report for 1839, discovered eight new minerals: viz...2. Allomorphite, a sulphate of barytes, containing 2 per cent. of sulphate of lime, of papillary form, and found in an ochre mine near Unterwirbach, Duchy of Schwarzburg.
1868 J. D. Dana Syst. Mineral. (ed. 5) 617 Allomorphite..probably pseudomorphous; Breithaupt regards it as a case of dimorphism.
1901 J. G. Goodchild in Heddle's Mineral. Scotl. I. p. xxiv/2 (table) Allomorphite.
This entry has been updated (OED Third Edition, September 2012; most recently modified version published online March 2022).
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n.1842
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