posnjakiten.

Brit.

/ˈpɒznjəkʌɪt/, U.S.

/ˈpɑznjəˌkaɪt/

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

Etymology: < the name of Eugene Waldemar Posnjak (1888–1949), U.S. geochemist + -ite suffix¹, after Russian poznjakit (Komkov & Nefedov 1967, in Zapiski Vsesojuznogo Min. Obščestva 96 58).

Mineralogy.

A rare blue to greenish-blue mineral, occurring in encrustations and prismatic crystals, which is a hydrated basic copper sulphate, Cu₄(SO₄)(OH)₆·H₂O, closely similar to langite and crystallizing in the monoclinic system.

ΘΚΠ

the world > the earth > minerals > types of mineral > sulphates > [noun] > hydrated basic copper sulphate

Krisuvigite1844

brochantite1865

kamarezite1895

posnjakite1967

1967 Mineral Abstr. 18 285/2 A new mineral..is named posnjakite in honour of E. W. Posnjak (1888–1949), well known for work on copper sulphates.

1970 Mineral. Mag. 37 740 While examining and surveying the disused workings of the Drakewalls mine, Gunnislake [in Cornwall], we have found specimens of the recently described species posnjakite in old stopes..above the deep adit level.

1995 Water Res. 29 1317 The slow addition of base to dilute CuSO₄ solutions produces either pure posnjakite..or posnjakite and brochantite..mixtures.

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

单词	posnjakite
释义	posnjakiten. Brit. /ˈpɒznjəkʌɪt/, U.S. /ˈpɑznjəˌkaɪt/ Origin: From a proper name, combined with an English element; modelled on a Russian lexical item. Etymons: proper name Posnjak , -ite suffix¹. Etymology: < the name of Eugene Waldemar Posnjak (1888–1949), U.S. geochemist + -ite suffix¹, after Russian poznjakit (Komkov & Nefedov 1967, in Zapiski Vsesojuznogo Min. Obščestva 96 58). Mineralogy. A rare blue to greenish-blue mineral, occurring in encrustations and prismatic crystals, which is a hydrated basic copper sulphate, Cu₄(SO₄)(OH)₆·H₂O, closely similar to langite and crystallizing in the monoclinic system. ΘΚΠ the world > the earth > minerals > types of mineral > sulphates > [noun] > hydrated basic copper sulphate Krisuvigite1844 brochantite1865 kamarezite1895 posnjakite1967 1967 Mineral Abstr. 18 285/2 A new mineral..is named posnjakite in honour of E. W. Posnjak (1888–1949), well known for work on copper sulphates. 1970 Mineral. Mag. 37 740 While examining and surveying the disused workings of the Drakewalls mine, Gunnislake [in Cornwall], we have found specimens of the recently described species posnjakite in old stopes..above the deep adit level. 1995 Water Res. 29 1317 The slow addition of base to dilute CuSO₄ solutions produces either pure posnjakite..or posnjakite and brochantite..mixtures. This entry has been updated (OED Third Edition, December 2006; most recently modified version published online March 2022). < n.1967
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