polianiten.

Brit.

/ˈpəʊlɪənʌɪt/, U.S.

/ˈpoʊliəˌnaɪt/

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

Etymology: < German Polianit (A. Breithaupt 1844, in Ann. der Physik 61 191) < ancient Greek πολιά greyness ( < πολιός grey: see poliosis n.) + German -it -ite suffix¹, so called on account of its colour.

Mineralogy.

A mineral containing manganese, formerly regarded as a variety of pyrolusite but now generally regarded as identical with it.

ΘΚΠ

the world > the earth > minerals > types of mineral > oxides and hydroxides > [noun] > rutile and uranite groups A02 > manganese dioxide

brownstone1657

manganese1662

magnesia1677

soap of glass1815

pyrolusite1828

varvicite1829

polianite1849

manganese dioxide1866

pelagite1876

manganese oxide1882

1849 J. Nicol Man. Mineral. 420 Polianite..acts like pure hyperoxide of manganese.

1892 E. S. Dana J. D. Dana's Syst. Mineral. (ed. 6) 236 Polianite..is distinguished from pyrolusite..by its hardness and its anhydrous character.

1923 Physical Rev. 21 389 The [X-ray] pattern of pyrolusite agrees line for line with polianite.

1937 Mineral. Mag. 24 521 The present study had for its main objective an attempt to settle..the uncertainty existing as to the relationship between polianite and pyrolusite.

2000 Geol. Surv. India Special Publ. No. 57. 260 Epigenetic replacement and supergene activity were responsible for the formation of supergene minerals like pyrolusite,..polianite, lithiophorite and bimessite.

This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).

单词	polianite
释义	polianiten. Brit. /ˈpəʊlɪənʌɪt/, U.S. /ˈpoʊliəˌnaɪt/ Origin: A borrowing from German. Etymon: German Polianit. Etymology: < German Polianit (A. Breithaupt 1844, in Ann. der Physik 61 191) < ancient Greek πολιά greyness ( < πολιός grey: see poliosis n.) + German -it -ite suffix¹, so called on account of its colour. Mineralogy. A mineral containing manganese, formerly regarded as a variety of pyrolusite but now generally regarded as identical with it. ΘΚΠ the world > the earth > minerals > types of mineral > oxides and hydroxides > [noun] > rutile and uranite groups A02 > manganese dioxide brownstone1657 manganese1662 magnesia1677 soap of glass1815 pyrolusite1828 varvicite1829 polianite1849 manganese dioxide1866 pelagite1876 manganese oxide1882 1849 J. Nicol Man. Mineral. 420 Polianite..acts like pure hyperoxide of manganese. 1892 E. S. Dana J. D. Dana's Syst. Mineral. (ed. 6) 236 Polianite..is distinguished from pyrolusite..by its hardness and its anhydrous character. 1923 Physical Rev. 21 389 The [X-ray] pattern of pyrolusite agrees line for line with polianite. 1937 Mineral. Mag. 24 521 The present study had for its main objective an attempt to settle..the uncertainty existing as to the relationship between polianite and pyrolusite. 2000 Geol. Surv. India Special Publ. No. 57. 260 Epigenetic replacement and supergene activity were responsible for the formation of supergene minerals like pyrolusite,..polianite, lithiophorite and bimessite. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < n.1849
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