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单词 pharmacosiderite
释义

pharmacosideriten.

Brit. /ˌfɑːməkəˈsʌɪdərʌɪt/, U.S. /ˌfɑrməkəˈsɪdəˌraɪt/
Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: pharmaco- comb. form, siderite n.1
Etymology: < pharmaco- comb. form + siderite n.1, after German Pharmakosiderit (J. F. L. Hausmann Handb. der Mineralogie (1813) III. 1065). Compare French pharmacosidérite (1856 or earlier).
Mineralogy.
A mineral of the cubic crystal system consisting of a hydrated arsenate of iron and potassium (often also containing other elements, esp. barium or sodium), and usually occurring as minute greenish or brownish crystals of cubic or tetrahedral form.
ΘΚΠ
the world > the earth > minerals > types of mineral > arsenates > [noun] > hydrous arsenates of iron
siderite1784
siderites1794
pharmacosiderite1835
symplesite1844
the world > the earth > minerals > ore > [noun] > metal ore > iron ore > others
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steel-ore1796
oligistc1803
black band1811
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blink klip1835
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1835 C. U. Shepard Treat. Mineral. II. 102 Pharmacosiderite. (See Cube-Ore.)
1877 Min. Mag. 1 17 The pharmacosiderite occurs in the usual cubical forms.
1881 Amer. Naturalist 15 382 We may call attention to the presence in the State of covellite, cerargyrite..pharmacosiderite..and succinite.
1937 A. Muir tr. B. B. Polynov Cycle of Weathering iii. 100 Mineralogists have described a few uncommon natural iron arsenates (sporodite.., pharmacosiderite 2FeAsO4.Fe(OH)3, etc.), but these can hardly be regarded as of vadose origin.
2003 Jrnl. Russell Soc. 8 i. 1 Abundant green pharmacosiderite occurs in a goethite, cryptomelane and pyrolusite impregnated quartz vein, or veins, close to the head of Burdell Gill.
This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).
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n.1835
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