 | | 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...mines at Butte in Silver Bow County and the Black Pine mine in Granite County have produced many fine crystal |  | O'Brien, Hugh E., Irving, Anthony J., McCallum, I.S., Thirlwall, Matthew F. (1995) Strontium, neodymium, and lead isotopic evidence for the interaction of post-suhduction asthenospheric potassic mafic magmas of the Highwood Mountains, Montana, USA, with ancient Wyoming craton lithospheric mantle. Geochimica et Cosmochimica Acta, 59 (21) 4539-4556 doi:10.1016/0016-7037(95)99266-j | Journal (article/letter/editorial) | | potassic mafic magmas of the Highwood Mountains, Montana, USA, with ancient Wyoming craton lithospheric mantle...Sciences, University of Washington, Seattle, WA 98195, USA *Department of Geology, Royal Holloway University...potassic malic rocks of the Highwood Mountains in Montana, USA, share many petrographic, major element, and...voluminous Eocene mafic magmatism throughout central Montana may have been triggered by foundering and southwestward...Bergman, 1991). In the Highwood Mountains of central Montana previous work (Larsen et al., 1941; O’Brien et |  | Duke, Genet Ide, Carlson, Richard W., Frost, Carol D., Hearn, B.C., Eby, G. Nelson (2014) Continent-scale linearity of kimberlite–carbonatite magmatism, mid-continent North America. Earth and Planetary Science Letters, 403. 1-14 doi:10.1016/j.epsl.2014.06.023 | Journal (article/letter/editorial) | | 46 Ma, although extension did occur in western Montana, Idaho, and southeastern British Columbia between...other lithospheric-derived rocks from elsewhere in Montana, Wyoming, and Alberta, and G3 (group 3) are rocks...Black Hills (South Dakota and Wyoming) and in Montana show a distinct change from higher to lower initial...Hearn, 2003). Crustal extension began in western Montana, Idaho, and Alberta at ∼53 Ma (Foster et al., 2007)...other lithospheric-derived rocks from elsewhere in Montana, and G3 are from the Absaroka volcanic province |  | MACDONALD, R., UPTON, B. G. J., COLLERSON, K. D., HEARN, B. C. H., JAMES, D. (1992) Potassic Mafic Lavas of the Bearpaw Mountains, Montana: Mineralogy, Chemistry, and Origin. Journal of Petrology, 33 (2) 305-346 doi:10.1093/petrology/33.2.305 | Journal (article/letter/editorial) | | Potassic Mafic Lavas of the Bearpaw Mountains, Montana: Mineralogy, Chemistry, and Origin by R. MACDONALD...rocks of the Bearpaw Mountains are part of the Montana high-potassium province, emplaced through Archaean...Structure The Bearpaw Mountains of north-central Montana (Fig. 1) form a drcular feature some 60 km in diameter...Eocene volcanic rocks of the Bearpaw Mountains, Montana, provide an excellent opportunity to study such...Lewistown WINNETT SILL WJ Q- GRASSRANGE 50"Ma V " ° INTRUSIONS FIG. 1. Map of central Montana, showing |  | | Book | | J. Wyllie, (California Institute of Technology, USA). Preface In this book the author attempts to...in Chap. 6. Experimental studies on the system nepheline-kalsilite-SiO2 in air and under 1, 2, 3, 5, and...Chap. 9, phase relations in the system diopside–nepheline–sanidine studied in air and under 1, 2, 10, and...forsterite-diopside-leucite-akermanite and diopside-nepheline-leucite-akermanite under atmospheric pressure...also true in the Highwood Mountains region of the USA. Such occurrences may be understood with reference |
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