英语词汇“pyroaurite”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

pyroaurite n.

Brit.

/ˌpʌɪrəʊˈɔːrʌɪt/

U.S.

/ˌpaɪroʊˈɔˌraɪt/

/ˌpaɪroʊˈɑˌraɪt/

[ < pyro- comb. form + classical Latin aurum gold (see auro- comb. form) + -ite suffix¹, after Swedish pyroaurit (L. J. Igelström 1865, in Öfversigt af Kongl. Vetenskaps-Akad. förhandlingar 22 608), so called because it turns golden-yellow on moderate heating] Mineralogy a rare mineral occurring mainly in serpentinites and hydrothermal vein deposits as yellowish or greenish tabular or platy crystals; (also attributive) designating a group of minerals having a similar crystal structure.Pyroaurite is a hydroxide and carbonate of magnesium and ferric iron, Mg₆Fe₂CO₃(OH)₁₆·4H₂O, dimorphous with sjögrenite and grouped with hydrotalcite. Crystal system: trigonal.

ΚΠ

1868 J. D. Dana Syst. Mineral. (ed. 5) 179 Pyroaurite... Perfectly soluble in muriatic acid.

1939 Univ. Toronto Stud., Geol. Ser. 33 (title) Transparent green pyroaurite from Ontario.

1976 Nature 23 Sept. 353/1 For reasons which are not entirely clear, the pyroaurite structure type seems to form very readily when CO₃²⁻ ions are available.

1996 Clay Minerals 31 53 Stichtite is the layered Mg-Cr(III) hydroxide carbonate of the pyroaurite group.

单词	pyroaurite
释义	> as lemmas pyroaurite pyroaurite n. Brit. /ˌpʌɪrəʊˈɔːrʌɪt/ , U.S. /ˌpaɪroʊˈɔˌraɪt/ , /ˌpaɪroʊˈɑˌraɪt/ [ < pyro- comb. form + classical Latin aurum gold (see auro- comb. form) + -ite suffix¹, after Swedish pyroaurit (L. J. Igelström 1865, in Öfversigt af Kongl. Vetenskaps-Akad. förhandlingar 22 608), so called because it turns golden-yellow on moderate heating] Mineralogy a rare mineral occurring mainly in serpentinites and hydrothermal vein deposits as yellowish or greenish tabular or platy crystals; (also attributive) designating a group of minerals having a similar crystal structure.Pyroaurite is a hydroxide and carbonate of magnesium and ferric iron, Mg₆Fe₂CO₃(OH)₁₆·4H₂O, dimorphous with sjögrenite and grouped with hydrotalcite. Crystal system: trigonal. ΚΠ 1868 J. D. Dana Syst. Mineral. (ed. 5) 179 Pyroaurite... Perfectly soluble in muriatic acid. 1939 Univ. Toronto Stud., Geol. Ser. 33 (title) Transparent green pyroaurite from Ontario. 1976 Nature 23 Sept. 353/1 For reasons which are not entirely clear, the pyroaurite structure type seems to form very readily when CO₃²⁻ ions are available. 1996 Clay Minerals 31 53 Stichtite is the layered Mg-Cr(III) hydroxide carbonate of the pyroaurite group. extracted from pyro-comb. form < as lemmas
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> as lemmas