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heliophyllite
heliophyllite n. 
/ˌhiːlɪə(ʊ)ˈfɪlʌɪt/, /ˌhilioʊˈfɪˌlaɪt/ [ < German heliophyllit (G. Flink 1888, in Öfversigt af kongl. Vetenskaps-Akad. Förh. XLV. 575), < Greek ϕύλλον leaf: so called because of its colour and structure] Mineralogy a yellowish oxychloride of lead and arsenic, probably dimorphous with ecdemite.
Brit. /ˌhiːlɪˈɒfᵻlʌɪt/
, /ˌhiːlɪˈɒfᵻlʌɪt//ˌhiːlɪə(ʊ)ˈfɪlʌɪt/U.S. /ˌhiliˈɑfəˌlaɪt/
, /ˌhiliˈɑfəˌlaɪt//ˌhilioʊˈfɪˌlaɪt/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
1890 Jrnl. Chem. Soc. 58 i. 459 On specimens of the so-called rhodotilite from Pajsberg a yellow mineral has been observed... The author names this mineral heliophyllite.
1968 I. Kostov Mineral. ii. vii. 467 Ekdemite is tetragonal, dimorphous with heliophyllite which is orthorhombic pseudotetragonal.
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