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pseudocotunnite
pseudocotunnite n.
Brit. 
/ˌs(j)uːdə(ʊ)kə(ʊ)ˈtʌnʌɪt/
, /ˌs(j)uːdə(ʊ)kə(ʊ)ˈtʌnʌɪt/U.S. /ˌsudoʊkəˈtəˌnaɪt/
[ < pseudo- comb. form + cotunnite n., after Italian pseudocotunnia (A. Scacchi 1873, in Atti della Reale Accad. delle Sci., Fis. e Matem. di Napoli 6 ix. 38); compare German Pseudocotunnit (G. vom Rath 1877)] Mineralogy rare an imperfectly characterized mineral found as aggregates of dull whitish or yellowish acicular or platy crystals in fumaroles on Vesuvius.Pseudocotunnite is a chloride of potassium and lead. Crystal system: probably orthorhombic./ˌsudoʊkəˈtəˌnaɪt/ΘΚΠ
the world > the earth > minerals > types of mineral > halides > [noun] > other chlorides or oxychlorides
horn-mercury1776
horn-lead1783
manganesane1815
percylite1850
mendipite1851
kremersite1854
horn-quicksilver1860
molysite1868
hydrophilite1875
pseudocotunnite1876
lawrencite1877
heliophyllite1890
koenenite1902
rinneite1909
kempite1924
1876 Harpers Mag. Jan. 303/2 Pseudocotunnite, found in acicular yellow crystals, which are without lustre.
1933 Mineral. Abstr. 5 269 New records of minerals from Vesuvius are thenardite, pseudocotunnite,..and hieratite.
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