单词 | tilasite |
释义 | tilasite Min.|ˈtiːləsaɪt| [ad. Sw. tilasit (H. Sjögren 1895, in Geol. Föreningens i Stockholm Förhandlingar XVII. 291), f. the name of D. Tilas (1712–72), Swedish mining engineer: see -ite1.] A fluor-arsenate of calcium and magnesium, CaMg(AsO4)F, that is isostructural with sphene and occurs as translucent monoclinic crystals that are colourless, green, or greyish.
1897Jrnl. Chem. Soc. LXXII. ii. 325 Tilasite or fluor⁓adelite from Långban... Irregular grains of this new mineral are found with hausmannite, berzeliite and calcite in a grey limestone. 1968[see isokite]. 1979Mineral. Abstr. XXX. 293/1 Tilasite crystals ‹2·5 mm across have been found with friedelite and baryte at the Sterling Hill mine, Ogdensburg, Sussex County, New Jersey. |

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