 | | 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...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...loparite. The mineralogy of the pegmatites from Gordon Butte, other potassic complexes, and sodic agpaitic |  | Jeffery, A. J., Gertisser, R., Jackson, R. A., O'Driscoll, B., Kronz, A. (2016) On the compositional variability of dalyite, K2ZrSi6O15: a new occurrence from Terceira, Azores. Mineralogical Magazine, 80 (4) 547-565 doi:10.1180/minmag.2016.080.018 | Journal (article/letter/editorial) | | 547–565 On the compositional variability of dalyite, K2ZrSi6O15: a new occurrence from Terceira, Azores...ABSTR ACT The rare potassium zirconium silicate dalyite has been identified for the first time on Terceira...Ignimbrite Formation. New quantitative analyses of this dalyite were combined with the small number of published... Mg and Ba. The combined dataset reveals that dalyite found within peralkaline granites and syenites...substitution relative to dalyite from highly potassic rocks. The Terceira dalyite exhibits a bimodal variation |  | | Conference Paper/Abstract | | associated alkaline rocks from Gordon Butte, Crazy Mountains (Montana) Roger H. Mitchell (Lakehead University)...Alkaline igneous rocks of central and western Montana (U.S.A.) exhibit a great petrographic diversity...Alkaline parageneses of different provenance from Montana have been shown to contain a variety of rare minerals...assemblages from the Gordon Butte area, northern Crazy Mountains. At Gordon Butte, four major intrusive...nepheline-syenite pegmatites from the Crazy Mountains (Montana) intermediate zone containing randomly oriented |  | | Journal (article/letter/editorial) | | residual magmas. In contrast, the zircono-silicate dalyite, and REE-rich minerals (chevkinite-(Ce), britholite-(Ce)...arfvedsonite, aegirine, fayalite, astrophyllite, dalyite and pyrochlore but observed that some have biotite...biotite + zircon in place of astrophyllite + dalyite. Whole-rock major element analyses of ejected syenite...aenigmatite, zircon, chevkinite-(Ce), pyrochlore, dalyite and thorite occur as accessory minerals among these...zircon, Chv = chevkinite-(Ce), Thr = thorite, Dlt = dalyite, Prc = pyrochlore, tr = traces (vol.% <0.5) normative |  | | Journal (article/letter/editorial) | | Montana Mineral Locality Index Downloaded by [University of Nebraska, Lincoln] at 20:00 09 April 2015...2015 K NOWN AS THE TREASURE STATE, Montana is rich in mineral and gemstone localities. The state motto...The middle third of the state is known as the Montana alkali province where the sediments have MICHAEL...Indian Queen mine ca. 1905 at Farlin, Beaverhead County. 208 ROCKS & MINERALS Downloaded by [University...one. The mines at Butte in Silver Bow County and the Black Pine mine in Granite County have produced many |  | McDonald, Andrew M., Chao, George Y. (2010) Rogermitchellite, Na12(Sr,Na)24Ba4Zr26Si78(B,Si)12O246(OH)24 · 18H2O, a new mineral species from Mont Saint-Hilaire, Quebec: description, structure determination and relationship with HFSE-bearing cyclosilicates. The Canadian Mineralogist, 48 (2) 267-278 doi:10.3749/canmin.48.2.267 | Journal (article/letter/editorial) | | Poudrette quarry, Mont Saint-Hilaire, Rouville County, Quebec, Canada. The mineral occurs as free-standing...phases including EGM, vlasovite, låvenite and dalyite has been documented by other investigators (e.g...(1965): Seven new barium minerals from eastern Fresno county, California. Am. Mineral. 50, 314-340. Baussy,...and Zr-rich pegmatites from Gordon Butte, Crazy Mountains (Montana, USA): comparisons between potassic |  | Wu, Bin, Wang, Ru-Cheng, Yang, Jin-Hui, Wu, Fu-Yuan, Zhang, Wen-Lan, Gu, Xiang-Ping, Zhang, Ai-Cheng (2015) Wadeite (K 2 ZrSi 3 O 9 ), an alkali-zirconosilicate from the Saima agpaitic rocks in northeastern China: Its origin and response to multi-stage activities of alkaline fluids. Lithos, 224. 126-142 doi:10.1016/j.lithos.2015.02.008 | Journal (article/letter/editorial) | | and Zaitsev, 1999), and at Gordon Butte in the Crazy Mountains in the USA (Chakhmouradian and Mitchell...Hills in the USA (Carmichael, 1967), in the alkaline pegmatites of Gordon Butte in the USA (Chakhmouradian...first described in alkaline pegmatites from Gordon Butte by Chakhmouradian and Mitchell (2002). Precipitation...Zr-rich alkaline pegmatites from Gordon Butte, Crazy Mountains (Montana, USA): AC comparisons between potassic...Rickard, R.S., 1987. Rare-earth-rich eudialyte and dalyite from a SC R peralkaline granite dyke at Straumsvola |  | Kynicky, J., Chakhmouradian, A. R., Xu, C., Krmicek, L., Galiova, M. (2011) DISTRIBUTION AND EVOLUTION OF ZIRCONIUM MINERALIZATION IN PERALKALINE GRANITES AND ASSOCIATED PEGMATITES OF THE KHAN BOGD COMPLEX, SOUTHERN MONGOLIA. The Canadian Mineralogist, 49 (4) 947-965 doi:10.3749/canmin.49.4.947 | Journal (article/letter/editorial) | | Zr-rich alkaline pegmatites from Gordon Butte, Crazy Mountains (Montana, USA): comparisons between potassic...Rickard, R.S. (1987): Rare-earth-rich eudialyte and dalyite from a peralkaline granite dyke at Straumsvola |
|
