eudialyte


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eudialyte

(juːˈdaɪəˌlaɪt)
n
(Minerals) mineralogy a brownish-red mineral easily dissolved by acids
References in periodicals archive ?
Hudson's target is part of the Sarfartoq carbonatite complex in western Greenland, where New Millennium Resources previously spent $5 million on exploration and testwork, while Tanbreeze (Ta-Nb-REE-Zirconium) is planning to extract eudialyte and feldspar concentrates from a deposit in the Ilimaussaq complex in the south of the island.
For example, the structure of eudialyte has now been determined, and there are those who contend that eudialyte could be reclassified as a group containing more than 150 possible new minerals because of major elemental substitutions in various structural sites in the unit cell of that mineral.
Our main mineral for rare earths is eudialyte and our metallurgical tests have shown very good recovery rates with acid magnetic separation, and with no need of flotation, of 82% TREO up to the purification and precipitation stage.
No feldspars, nepheline, sodalite, aegirine-diopside, amphiboles or eudialyte were found in this body, nor were there any zirconium minerals.
Villiaumite was seen here as rich red, gleaming cleavage faces to several centimeters across, in cabinet-size lumps; kovdorskite was on hand, as palest orange, glassy, wedge-shaped crystals to 1 cm in matrix coverages to 8 cm across; the very rare bobierrite was seen as sprays of pale blue, glassy crystals to 3 cm rising from matrix (these from the world's only significant bobierrite occurrence, the Zheleznyi mine, Kovdor massif, Kola Peninsula); and, front and center at the stand, a huge piece of nepheline/apatite matrix was seen to harbor a sharp, complete crystal of eudialyte fully 8 cm across, rose-red inside but with a thin, opaque brown crust of wadeite.
Grishin proposed a fitting name for the pegmatite: the Palitra (in English, "palette"), in allusion to the large pods of brightly colored minerals (red villiaumite, pearly-white natrosilite, green aegirine, lilac ussingite, lemon-yellow vuonnemite, crimson sodalite, orange eudialyte, salmon-pink serandite, dark-brown lomonosovite and lorenzenite, etc.
Other sporadic miarolitic constituents include eudialyte, villiaumite, fluorapophyllite, calcite, biotite, fluorite and analcime.
Associated minerals are: microcline, aegirine, nepheline, magnesio-arfvedsonite, eudialyte, lorenzenite, lamprophyllite, catapleiite, titanite, vinogradovite, tundrite-(Ce), apatite, neptunite, tsepinite-Na, kuzmenkoite-Zn, korobitsynite.
Relationship to other species: It is a member of the eudialyte group.
5], a new mineral of the eudialyte group from the Kovdor massif, Kola Peninsula.
Associated minerals are: natrolite, sodalite, aegirine, biotite, vinogradovite, titanite, eudialyte, calcite, barytocalcite, fluorapatite, fluorite, djerfisherite, and molybdenite.