Mitchell, Roger H. (2000) The mineralogy of nepheline-syenite pegmatites and associated alkaline rocks from Gordon Butte, Crazy Mountains (Montana) CSEG Symposium, Canadian Society of Exploration Geophysicists.

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	Chakhmouradian, A. R., Hughes, J. M., Rakovan, J. (2005) FLUORCAPHITE, A SECOND OCCURRENCE AND DETAILED STRUCTURAL ANALYSIS: SIMULTANEOUS ACCOMMODATION OF Ca, Sr, Na, AND LREE IN THE APATITE ATOMIC ARRANGEMENT. The Canadian Mineralogist, 43 (2) 735-746 doi:10.2113/gscanmin.43.2.735	Journal (article/letter/editorial)
	solution between fluorapatite and belovite-(Ce), with the belovite content increasing toward the rim...rim, and contain approximately 50 mol.% of the belovite component. The crystal structure of the Lovozero...intimately intergrown domains of fluorapatite and belovite. Keywords: fluorcaphite, apatite, crystal structure...dépourvu en Sr, Na, et les terres rares légères. Ce type de zonation résulterait de la surimposition...d’une solution solide entre fluorapatite et bélovite-(Ce), la proportion en bélovite augmentant vers la bordure
	Chakhmouradian, Anton R., Mitchell, Roger H. (2002) The mineralogy of Ba- and Zr-rich alkaline pegmatites from Gordon Butte, Crazy Mountains (Montana, USA): comparisons between potassic and sodic agpaitic pegmatites. Contributions to Mineralogy and Petrology, 143 (1) 93-114 doi:10.1007/s00410-001-0333-6	Journal (article/letter/editorial)
	Zr-rich alkaline pegmatites from Gordon Butte, Crazy Mountains (Montana, USA): comparisons between potassic...Springer-Verlag 2002 Abstract At Gordon Butte (Crazy Mountains, Montana), agpaitic nepheline±syenite pegmatites...barytolamprophyllite, wadeite, eudialyte, loparite-(Ce) and altered rinkite (``vudyavrite'') embedded in...overall evolutionary trend of clinopyroxene in the Gordon Butte rocks is from Fe-poor diopside to aegirine±augite...lamprophyllite. The evolutionary history of the Gordon Butte pegmatites can be subdivided into primary, agpaitic
	Chakhmouradian, A. R., Reguir, E. P., Mitchell, R. H. (2002) STRONTIUM-APATITE: NEW OCCURRENCES, AND THE EXTENT OF Sr-FOR-Ca SUBSTITUTION IN APATITE-GROUP MINERALS. The Canadian Mineralogist, 40 (1) 121-136 doi:10.2113/gscanmin.40.1.121	Journal (article/letter/editorial)
	cation site: strontium-apatite, belovite-(Ce), belovite-(La), deloneite-(Ce) and fluorcaphite. Crystal- ...SrTiO3 (Sr), albite (Na), REE-doped glasses (La, Ce), barite (Ba), fayalite (Fe), orthoclase (K), diopside...in Sr and, commonly, Na and LREE (Table 2). Belovite-(Ce), ideally NaCeSr3(PO4)3F, is known from several...compositions intermediate between fluorapatite and belovite occur in aegirine–albite metasomatic rocks and...ussingite associated with murmanite, steenstrupine-(Ce), mangan-neptunite, and other minerals characteristic
	Liferovich, R. P., Mitchell, R. H. (2006) Apatite-group minerals from nepheline syenite, Pilansberg alkaline complex, South Africa. Mineralogical Magazine, 70 (5) 463-484 doi:10.1180/0026461067050346	Journal (article/letter/editorial)
	orthomagmatic fluorapatite; strontian britholite-(Ce); strontian fluorapatite; Sr-apatite; REE-rich Sr-apatite;...approaching the stoichiometry of belovite-(Ce) and deloneite-(Ce); britholite-(Ce). Increasing alkalinity of...solution towards belovite-(Ce), Si-rich belovite-(Ce) and strontian britholite-(Ce). K EY WORDS : lujavrite...alteration, strontian, Sr-apatite, britholite-(Ce), belovite-(Ce), Pilansberg. Introduction APATITE is a common...ﬂuorcaphite, P3̄-structured belovite-(Ce) and belovite-(La), or to P3-structured deloneite-(Ce) (Pekov et al., 1995;
	Mitchell, R., Liferovich, R. (2006) Subsolidus deuteric/hydrothermal alteration of eudialyte in lujavrite from the Pilansberg alkaline complex, South Africa. Lithos, 91 (1) 352-372 doi:10.1016/j.lithos.2006.03.025	Journal (article/letter/editorial)
	aggregates of zircon, fergusonite-(Ce), allanite-(Ce), britholite-(Ce), titanite, pyrochlore, albite and...ilmenite (Ti, Fe), Mn-fayalite (Mn), loparite (La, Ce, Pr, Nd), lueshite (Nb), orthoclase (K), periclase...agpaitic nepheline syenite occurring at Gordon Butte, Montana, by Chakhmouradian and Mitchell (2002)....strontium-apatite and ultimately to Si-rich belovite-(Ce) and strontian britholite. 5. Secondary minerals...paper. Minerals recognized to date are: allanite-(Ce) (Table 3, comp. 15), allanite-(La) (Table 3, comp
	Chakhmouradian, A. R., Mitchell, R. H. (1999) Primary, agpaitic and deuteric stages in the evolution of accessory Sr, REE, Ba and Nb-mineralization in nepheline-syenite pegmatites at Pegmatite Peak, Bearpaw Mts, Montana. Mineralogy and Petrology, 67 (1) 85-110 doi:10.1007/bf01165118	Journal (article/letter/editorial)
	nepheline-syenite pegmatites at Pegmatite Peak, Bearpaw Mts, Montana A. R. Chakhmouradian and R. H. Mitchell Department...The pegmatites at Pegmatite Peak (Bearpaw Mts., Montana) crystallized from an evolved fraction of nepheline-syenitic...repositories for Sr, REE and Nb included betafite, loparite-(Ce), crichtonite and ilmenite-group minerals. Betafite...elements from the nepheline-syenite melt. Loparite-(Ce) evolved predominantly by depletion in Sr and Ca...(strontiochevkinite) to REE-rich compositions [chevkinite-(Ce)]. Strontiochevkinite from Pegmatite Peak is compositionally

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Belovite-(Ce) from Gordon Butte, Meagher County, Montana, USA

Belovite-(Ce) from
Gordon Butte, Meagher County, Montana, USA