pegmatite in English
It has also been found as a constituent of granites and in granitic pegmatites .
Use "pegmatite" in a sentence
1. Tourmaline pegmatite, norite, Anorthitite, and plumasite
2. The black pearl mine, Arizona; Wolframite veins and stockscheider pegmatite related to an Albitic stock
3. Where do Aquamarines Form? Most Aquamarines form in mineral-rich pegmatite rocks.
4. The remaining 20 to 25 percent comprises hornblende-Biotite gneiss, amphibolite with or without pyroxene, and pegmatite
5. The Covide pegmatite, (Northern Portugal), exhibit a new example of K-feldspar, Albite, quartz layering.
6. African Pegmatite is a leading supplier and miller of the finest quality Anthracite for every application.
7. Hagendorf South Pegmatite, Bavaria, Germany - Translucent yellow Autunite blades on matrix ( For original close-up photo contact us )
8. Columbite-tantalite is also found as crystals up to 2 cm long in a pegmatite in the NE SW SE Sec
9. Beryl is a minor constituent of many granitic rocks and associated pegmatite dikes, in gneisses, and in mica schists
10. Extreme variation and apparent reversal of Nb-Ta fractionation in Columbite-group minerals from the Scheibengraben beryl-Columbite granitic pegmatite, Marsikov, Czech Republic
11. A description is given of scandium-rich ixiolite, (Ta,Nb,Sc,Sn,Fe,Mn,Ti)2O4 in association with pyrochlore, (Ca,Sc,Y,Sn,U)2(Ta,Nb,Ti)2O6(O,OH,F) and bazzite, Be3Sc2Si6O18 from a cleavelandite-amazonite pegmatite occurring as a part of a larger network of granitic pegmatite veins.
12. Albite-rich plagioclase from a pegmatite from Lofoten, North Norway.png 4,592 × 3,448; 20.49 MB Albite-Rutile-Titanite-tuc09101b.jpg 400 × 261; 33 KB Albite …
13. The 579.8 ± 2.2 Ma (40Ar-39Ar, muscovite) Georgeville Pluton in mainland Nova Scotia is an epizonal body consisting of alkali feldspar granite and related pegmatite.
14. Li 2CO 3 decomposes at temperatures around 1300 °C. Lithium is extracted from primarily two sources: pegmatite crystals and lithium salt from brine pools.
15. SM20-475 Tourmaline with Albite and Laumontite (illustrated) $35,000.00 Cabinet, 10.8 x 3.0 x 2.9 cm Sosedka Pegmatite, Malkhan Field, Krasnyi Chikoy, Zabaykalsky Krai, Russia
16. Grenvillian deformation was accommodated by the sheets through early ductile flow and subsequent brittle rupturing during folding that was accompanied by the intrusion of pegmatite veins.
17. ‘Large Anhedral masses of yttrian fluorite, measuring to several feet across, were found at the White Cloud pegmatite.’ ‘The samarskite occurs as black to brown, metamict, Anhedral, radiating aggregates to 30 cm in diameter.’
18. The late granite dike suite, comprising late-stage, muscovite- and biotite-bearing quartz – alkali feldspar pegmatite and finer grained granitic lithologies, represents the last magmatic event in the Northern complex emplaced after collision.
19. ‘Beryl, Columbite, and triphylite are common accessory minerals in the Estes pegmatite, especially in the coarse-grained layers.’ ‘It is most abundant in the coarse-grained facies and is often associated with triphylite, Columbite, and sphalerite.’
20. Columbite was the second species named from the USA, after celestine (q.v.) Type Locality: ⓘ Green's Well pegmatite (Green's Tank), Pilgangoora (Pilgangoora Mining Centre; Lynas Find; McPhees Patch; Mount York), Wallareenya Station, Port Hedland Shire, Western Australia, Australia
21. ‘Beryl, Columbite, and triphylite are common accessory minerals in the Estes pegmatite, especially in the coarse-grained layers.’ ‘It is most abundant in the coarse-grained facies and is often associated with triphylite, Columbite, and sphalerite.’
22. ‘A plagioclase feldspar, Albite probably, occurs as parallel growths of transparent colorless to yellowish crystals.’ More example sentences ‘They collected several pegmatite pockets in which topaz was associated with both clear and smoky quartz, microcline, Albite, muscovite, fluorite, and cassiterite.’
23. Lepidolite and lithian muscovite occur in high-pressure spodumene, low-pressure petalite, phosphorus-enriched amblygonite and fluorine-rich lepidolite subtypes of orogenic affiliated complex type granitic pegmatites and rarely in anorogenic affiliated amazonite-bearing Trace element data determined by X-ray fluorescence for lepidolite of various pegmatite subtypes, morphology (“book”, “scaly”, “fine-grained”), position within the pegmatite (primary zones, replacement units, pockets), mineral assemblages and tectonic affinity (orogenic vs anorogenic) show extreme fractionation of Rb and Cs; modest levels of T1, Ga, Nb, Ta, Sn and Zn; and typically low abundances of Ba, Sr, Ni, Pb, Y, V, W and Zr.
24. Three types of late, subsolidus (K-Rb)-feldspars occur in the spodumene-subtype, complex-type, pollucite-bearing Rubellite rare-element pegmatite at Lilypad Lakes, near Fort Hope in northwestern Ontario: (1) Exsolution followed by hydrothermal reconstitution generated diffuse bands, patches and veinlets of Rb-enriched (< 43 mol. % Rbf) and Rb-depleted triclinic K-feldspar in black blocky microcline; (2) metasomatism of pollucite produced aggregates of adularia which range from 14 to 73 mol. % Rbf, rimmed by pure 100 mol. % Kfs feldspar, and are most likely highly disordered; (3) blocky K-feldspar was replaced by salmon-coloured, fine-grained, Na-poor and Rb-free maximum microcline with a composition close to 100 mol.