Hanley, J.B., Heinrich, E.W., Page, L.R. (1950) Pegmatite investigations in Colorado, Wyoming, and Utah, 1942-1944. Professional Paper 227. US Geological Survey doi:10.3133/pp227

(2005) Mineral Resources Data System (MRDS), US Geological Survey.

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	*Beste, Bob (2014) Location Guide for Rockhounds in the United States* (4th ed.) Vol. 1 - Part I - Alabama through Florida.**	Book (volume)
	...........................................59 Colorado ...............................................................548 Table of Maps Page Alabama County Map ...................................................................................4 Alaska County and Stream Map ..................................Co. Mining Districts ............................................................22 Arizona County Map.........................23 Arizona – Cochise Co. Mining Districts ....................................
	*Beste, Bob (1996) Location Guide for Rockhounds in the United States* (2nd ed.) Vol. 1 - Part I - Alabama to Idaho.**	Book (volume)
	...........................................47 Colorado ................................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham...were well known to prehistoric Indians.) BARBOUR COUNTY BAKER HILL, SE 1 mi. : 1 in a deep ravine, as a...deep red to variegated⎯ocher. BIBB COUNTY GENERAL AREA: c county gravel pits along the Cahaba R.⎯gemmy
	*Beste, Bob (2005) Location Guide for Rockhounds in the United States* (3rd ed.) Vol. 1 - Part I - Alabama through Idaho.**	Book (volume)
	...........................................47 Colorado ................................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham...were well known to prehistoric Indians.) BARBOUR COUNTY BAKER HILL, SE 1 mi. : 1 in a deep ravine, as a...deep red to variegated⎯ocher. BIBB COUNTY GENERAL AREA: c county gravel pits along the Cahaba R.⎯gemmy
	*Ransom, Jay Ellis (1964) A Range Guide to Mines and Minerals* - How and Where to Find Valuable Ores and Minerals in the United States. Harper & Row, New York.**	Book
	stumble over a valuable nugget and stake your own mining claim? Indeed it to is, and author book Jay...prospecting, he points out, is in abandoned mining districts, where valuable mineral ores are present...commercial ores and secondary minerals by state, county, township, and geologic range. For easy identification...RANSOM 1875-1948 An to the Eastern '‘Schoolmarm” Mining Camps of the Old West I I a s I \ h K... CONTENTS Preface ix PART I 1 Introduction to Mining and Mineralogy 2 Preparation for Mineral Collecting
	*Ransom, Jay Ellis (1974) Gems and Minerals of America* - A Guide to Rock Collecting. Harper & Row.**	Book
	Petrified Forest Trails Arizona Gem Trails and the Colorado Desert of California High Tension (A Biography)...\merica Alabama Alaska Arkansas Arizona California Colorado Connecticut Delaware Florida Georgia Hawaii Idaho...of commercial mining is also long, beginning with the Kenya opal mines of 4000 B.C. Mining began with gemstones...gemstones, instead of metallic ores, and mining for turquoise was enormously extended throughout the...quartz crystal; assigned to Issachar). Fourth row: beryl (probably bluish aquamarine or pink morganite; assigned

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Plagioclase from Chaney - Sims Beryl Prospects, Mayesville Mining District, Larimer County, Colorado, USA

Plagioclase from
Chaney - Sims Beryl Prospects, Mayesville Mining District, Larimer County, Colorado, USA