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pyrorthite
pyrorthite n.
Brit. 
/pʌɪˈrɔːθʌɪt/
, /pʌɪˈrɔːθʌɪt/U.S. /paɪˈrɔrˌθaɪt/
[after Swedish pyrorthit (J. J. Afzelius et al. 1818, in Afhandlingar i fisik, kemi och mineralogie 5 49)] Mineralogy (now rare) a black variety of allanite containing organic impurities, which burns when strongly heated./paɪˈrɔrˌθaɪt/ΚΠ
1820 R. Jameson Syst. Mineral. (ed. 3) III. 561 A variety of orthite was discovered in another mine near Fahlun, and which possesses the property of taking fire before the blowpipe, and of continuing to burn for some moments. It is named Pyrorthite.
1875 T. S. Hunt Chem. & Geol. Ess. 177 The name of pyrorthite, given by Berzelius to a substance which appears to be a mixture of orthite with a combustible hydrocarbonaceous matter.
1912 E. Cahen & W. O. Wootton Min. Rarer Metals 32 Pyrorthite. Occurs in long prisms of loose texture, containing over 30 per cent. of carbonaceous matter.
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- vanilla slice
- vanilla sugar
- vanilla worker
- vanilla-flavoured
- vanilla-sweet
- vanillaed
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- vanillas
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- vanille ice
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- vanillylmandelic acid
- vaniloquence
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- vanish
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