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NYF-type pegmatites

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Journal Article
Published: 01 February 2008
American Mineralogist (2008) 93 (2-3): 263–269.
...Robert F. Martin; Caterina De Vito; Federico Pezzotta Abstract The presence of amazonitic K-rich feldspar is considered an earmark of evolved granitic pegmatites of NYF type. Elements of an explanation of the “NYF pegmatite-amazonite” connection emerged in a study of the classic Anjanabonoina...
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Journal Article
Published: 01 December 2012
The Canadian Mineralogist (2012) 50 (6): 1729–1750.
... are hematite, goethite, Mn oxides, clinobisvanite, bismuthite, and opal. The pegmatites are ascribed to the allanite–monazite type, REL–REE subclass, NYF family. Data on melt+fluid inclusion are consistent with crystallization of an aqueous, CO 2 -bearing melt at 475° < T < 600°C and ~3.0 to 3.7 kbar...
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Discrimination diagrams for LCT and <b>NYF</b>-<b>type</b> <b>pegmatites</b>. (A) K&#x2F;Rb–Ga discri...
Published: 21 December 2020
Fig. 14. Discrimination diagrams for LCT and NYF-type pegmatites. (A) K/Rb–Ga discrimination diagram according to Wise (2013 , 2017 ) with amazonites of the Serra Branca pegmatite (green symbols) compared to pegmatite K-feldspars worldwide (grey symbols; Wise 2017 ). (B) P versus Fe
Journal Article
Published: 01 June 2021
Rocky Mountain Geology (2021) 56 (1): 1–18.
... (variety cleavelandite), hematite, and biotite. Accessory minerals include fluocerite, bastnäsite, columbite, zircon (var. ‘cyrtolite’), thorite, and secondary U phases. Fluorite is conspicuously absent, although it is a common phase in the South Platte district NYF-type pegmatites, which are rich...
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Journal Article
Published: 01 February 2006
The Canadian Mineralogist (2006) 44 (1): 87–103.
..., mainly Ti-dominant, are U-rich betafite (0.29–0.57 apfu U) and locally pyrochlore. The primary minerals are typical of an NYF-type pegmatite, and contrast with the LCT-type mineralogy (which includes abundant elbaite–liddicoatite, a pink variety of beryl, spodumene, and hambergite) typical of much...
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Geologic map of the Pikes Peak granite batholith (Colorado) with the locati...
Published: 01 June 2021
, and other major NYF-type pegmatites (after Barker et al., 1975 , 1976 ; Smith et al., 1999 ).
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Quadrilateral classification diagram of columbite group minerals according ...
Published: 01 March 2017
. (b) Compositional variation of Sveconorwegian columbite-group minerals from NYF-type pegmatites of southern Norway and southwestern Sweden (grey fields base on Svecofennian columbite-group minerals shown in frame c; BDD = Broddbo; STV = Stora Vika). (c) Compositional variation of Svecofennian
Journal Article
Published: 01 December 2005
The Canadian Mineralogist (2005) 43 (6): 2005–2026.
... from I-type granites, and a mixed NYF + LCT family of diverse origins, such as contamination of NYF plutons by digestion of undepleted supracrustal rocks. Abstract Il y a eu plusieurs tentatives de classification de pegmatites granitiques au cours du siècle dernier, avec un taux de réussite et une...
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Journal Article
Published: 01 October 2006
The Canadian Mineralogist (2006) 44 (5): 1119–1125.
...William B. Simmons; Sarah L. Hanson; Alexander U. Falster Abstract Samarskite-(Yb) occurs at the Little Patsy NYF-type granitic pegmatite in the South Platte district, Jefferson County, Colorado as black, metamict, anhedral masses up to tens of centimeters across that are intimately intergrown...
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Journal Article
Published: 01 December 2005
The Canadian Mineralogist (2005) 43 (6): 2027–2048.
... setting; in contrast, NYF (Nb–Y–F-enriched) pegmatites, are affiliated with anorogenic suites, formed in an extensional setting, and really not fundamentally different in petrogenetic lineage from suites in silica-undersaturated systems, including carbonatites. Both LCT and NYF types involve magmas...
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Journal Article
Published: 01 July 2016
The Canadian Mineralogist (2016) 54 (4): 917–933.
... therein). A subsequent study by Martin & DeVito (2005) proposed that there exists a strong relationship between tectonic setting and pegmatite types. Based on geochemical constraints, these authors suggested that LCT pegmatites result from magmatism in compressional (orogenic) settings, whereas NYF...
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Journal Article
Published: 01 August 2017
European Journal of Mineralogy (2017) 29 (4): 755–766.
...Milan Novák; Jaroslav Cícha; Renata Čopjaková; Radek Škoda; Michaela Vašinová Galiová Four distinct paragenetic, morphological and compositional types of milarite-group minerals were distinguished in the NYF pegmatite Velká skála, Písek district, Czech Republic (Moldanubian Zone). The simply zoned...
Journal Article
Published: 01 March 2017
The Canadian Mineralogist (2017) 55 (2): 283–315.
.... (b) Compositional variation of Sveconorwegian columbite-group minerals from NYF-type pegmatites of southern Norway and southwestern Sweden (grey fields base on Svecofennian columbite-group minerals shown in frame c; BDD = Broddbo; STV = Stora Vika). (c) Compositional variation of Svecofennian...
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Journal Article
Published: 01 December 2012
The Canadian Mineralogist (2012) 50 (6): 1713–1728.
..., are present in Li- and B-rich and chemically evolved pegmatites, and sodic amphiboles of the riebeckite–arfvedsonite type are present in granitic NYF pegmatites ( London 2008 ). Fluor-edenite, F-rich tremolite and diopside are found only in the McLear pegmatite of the AL, where they are associated...
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K/Rb  versus  Rb distribution in K-feldspar from the Serra Branca amazonite...
Published: 21 December 2020
to the other NYF type K-feldspars (light grey). Data extracted from Černý et al . (1985 , @), Shearer et al . (1985 , $), Abad-Ortega et al . (1993 , §), Larsen (2002 , *), Sokolov (2006 , ¢), Martin et al . (2008 , £), Brown et al . (2017 , &), and the present paper. (LCT pegmatites – dark
Journal Article
Published: 01 June 2010
The Canadian Mineralogist (2010) 48 (3): 615–628.
...Milan Novák; Jan Filip Abstract An intragranitic, euxenite-type NYF pegmatite, Kožichovice II, derived from the ultrapotassic orogenic Třebíč syenogranite pluton, contains pale green prismatic crystals of primary beryl I, up to 3 cm long, arranged in radial aggregates. They are typically...
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Journal Article
Published: 01 January 2016
The Canadian Mineralogist (2016) 54 (1): 115–124.
... due to crystallization of cleavelandite that suppressed the activity of Na. The Julianna pegmatitic system at Piława Górna is the third confirmed occurrence of pezzottaite worldwide. The mineral, similarly to pezzottaite in the type occurrence in Madagascar, formed in a pegmatite with a hybrid NYF...
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Relationships between  Černý’s (1991)  <b>pegmatite</b> classes, families, <b>types</b>...
Published: 01 August 2008
Table 3. Relationships between Černý’s (1991) pegmatite classes, families, types and subtypes, showing the types and subtypes related to LCT and NYF families.
Journal Article
Published: 01 August 2012
The Canadian Mineralogist (2012) 50 (4): 1077–1094.
... pegmatite represents a special type of contaminated LCT pegmatite rather than a member of the mixed family. The current classification of granitic pegmatites includes two main petrogenetic families, LCT (enriched in lithium + cesium + tantalum) and NYF (enriched in niobium + yttrium + fluorine) ( Černý...
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Journal Article
Published: 01 October 2004
The Canadian Mineralogist (2004) 42 (5): 1331–1355.
...Joel E. Gagnon; Iain M. Samson; Brian J. Fryer; Anthony E. Williams-Jones Abstract Hydrothermal fluorite–rare-earth-element REE mineralization occurs in the zoned Oregon No. 3 (niobium–yttrium–fluorine) granitic pegmatite (NYF-type) hosted by the Proterozoic Pikes Peak granite in north-central...
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