	Heinrich, E. Wm., Shappirio, Joel R. (1966) Alkalic rocks and carbonatites of the Arkansas River Canyon, Fremont County, Colorado. 3. The Amethyst carbonatites. American Mineralogist, 51 (7) 1088-1106	Journal (article/letter/editorial)
	OF THE ARKANSAS RIVER CANYON, FREMONT COUNTY, COLORADO. 3. THE AMETHYST CARBONATITESl E. Wu. HBrNnrcH...Michigon. ABSTRACT The Amethyst carbonatites in 12 Mile Park, Fremont County, Colorado are the northernmost...the dike halo around the Iron Mountain-McClure Mountain alkalic complex. The deposits contain three main...and feldspathized granite; 2) calcite barite carbonatite and 3) veins of amethystine quartz. The fi.rst...silicification common in many larger carbonatites. In the carbonatite, each of several calcite generations is characterized
	Armbrustmacher, T.J. (1988) Geology and resources of thorium and associated elements in the Wet Mountains area, Fremont and Custer counties, Colorado. Professional Paper 1049f. US Geological Survey doi:10.3133/pp1049f	Report (issue)
	Peninsula, Mich. 10. Porphyry molybdenum ore, Colorado 11. Zinc ore, Edwards, N.Y. 12. Manganese nodules...Elements in the Wet Mountains Area, Fremont and Ouster Counties, Colorado By THEODORE J. ARMBRUSTMACHER GEOLOGY...elements in the Wet Mountains area, Fremont and Custer Counties, Colorado. (Geology and resources of thorium...16:1049-F 1. Thorium ores—Colorado—Wet Mountains Region. 2. Earths, Rare—Colorado—Wet Mountains Region. 3...Mountains Region. 4. Mines and mineral resources—Colorado—Wet Mountains Region. I. Title. II. Series. III
	Armbrustmacher, T.J., Brownfield, I.K. (1978) Carbonatites in the Wet Mountains area, Custer and Fremont Counties, Colorado--chemical and mineralogical data. Open-File Report Vol. 1978 (78-177) US Geological Survey doi:10.3133/ofr78177	Report (issue)
	in the Wet Mountains Area, Custer and Fremont Counties, Colorado Chemical and Mineralogical Data By T...in the Wet Mountains Area, Custer and Fremont Counties, Colorado Chemical and Mineralogical Data By T...analytical and mineralogical data for 90 samples of carbonatite collected as part of a U.S. Geological Survey...assess the resource potential of the Wet Mountains, Colorado thorium province (Armbrustmacher, 1976). The carbonatites...alkalic igneous event that also includes the McClure Mountain and Gem Park Complexes (Parker and Sharp,
	*Heinrich, E. William (1980) The Geology of Carbonatites* - Reprint Edition with Supplementary Material. Robert E. Krieger Publishing Co. Inc.**	Book (edition)
	Dedicated to Harry von Eckermann, an eponym for carbonatite, with admiration and affection Preface to the...this edition, summarizes the major advances in carbonatite studies in the decade 1966-1976. Since 1966 many...Carbonatites are now the major sources of RE elements (Mountain Pass, California) and of Nb (Oka, Quebec and Araxa...Certainly one of the important new facets of carbonatite study will be their saprolite geology. Recognition...Kimberlites Carbonatites and Vulcanism Geology of Carbonatite Bodies Mineralogy and Petrology Composition and

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Thorite from Amethyst carbonatite, McClure Mountain Complex, Fremont County, Colorado, USA

Thorite from
Amethyst carbonatite, McClure Mountain Complex, Fremont County, Colorado, USA