Superseded publication
The use of asbestos is one of the most controversial issues surrounding the industrial minerals industry. Its carcinogenic nature, an overall lack of knowledge of minimum safe exposure levels, its widespread use for more than 100 years, and the long latency for the development of lung cancer and mesothelioma are the main contributing factors to these controversies.
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2013 Industrial Minerals Review: Kaolin
An official website of the United States government. Here's how you know
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By Robert l. Virta
By Robert l. Virta Domestic survey data and tables were prepared by Mariarosaria Arguelles, a C. Harper, and Hoa P. Phamdang, statistical assistants, and the world production tables were prepared by Linder Roberts, international data coordinator. Ball Clay. — In 2004, 4 companies mined ball clay from 47 pits in 4 States.
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By Robert L. Virta
By Robert L. Virta Domestic survey data were prepared by Hoa P. Phamdang, statistical assistant. Wollastonite, a calcium metasilicate (CaSiO 3), has a theoretical composition of 48.3% calcium oxide and 51.7% silicon dioxide but may contain trace to minor amounts of aluminum, iron, magnesium, manganese, potassium, and sodium.
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Mineral resource of the month: natural and synthetic zeolites
Robert L. Virta: Publication Type: Article: Publication Subtype: Journal Article: Series Title: Geotimes: Index ID: 70116803: Record Source: USGS Publications Warehouse: USGS Organization: National Minerals Information Center: Contact. National Minerals Information Center 988 National Center 12201 Sunrise Valley Drive Reston, VA 20192
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Worldwide Asbestos Supply and Consumption Trends from …
The use of asbestos is one of the most controversial issues surrounding the industrial minerals industry. Its carcinogenic nature, an overall lack of knowledge of minimum safe exposure …
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U.S. Geological Survey Open File Report 02-149
The term asbestos is a generic designation referring usually to six types of naturally occurring mineral fibers that are or have been commercially exploited. These fibers belong to two mineral groups: serpentines and amphiboles. The serpentine group contains a single asbestiform variety: chrysotile; five asbestiform varieties of amphiboles are known: anthophyllite asbestos, …
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U.S. Geological Survey Circular 1255-KK
Mineral Commodity Profiles -- Asbestos. Published 2005 Online only Version 1.0. By Robert L. Virta. Overview. Asbestos is a generic name given to six fibrous minerals that have been used …
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By Robert L. Virta
By Robert L. Virta Domestic survey data and tables were prepared by Raymond I. Eldridge III, statistical assistant, and the world production table was prepared by Glenn J. Wallace, international data coordinator. The mineral talc is a hydrous magnesium silicate. A massive talcose rock is called steatite, and an impure massive variety
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2011 minerals yearbook
2011 Minerals Yearbook U.S. Department of the Interior U.S. Geological Survey CLAY AND SHALE December 2013 Clay and Shale—2011 18.1 Clay and Shale By Robert l. Virta Domestic… ×
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Mineral resource of the Month: Clay
Clays were one of the first mineral commodities used by people. Clay pottery has been found in archeological sites that are 12,000 years old, and clay figurines have been found in sites that are even older....
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2013 Industrial Minerals Review: Ball Clay
Publication type: Article: Publication Subtype: Journal Article: Title: 2013 Industrial Minerals Review: Ball Clay: Series title: Mining Engineering: Volume: 66
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Mineral Commodity Profiles, Asbestos: Usgs Circular 1255 …
Mineral Commodity Profiles, Asbestos: Usgs Circular 1255-Kk [Virta, Robert L., U. S. Department of the Interior, United] on Amazon. *FREE* shipping on qualifying …
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By robert l. Virta
By robert l. Virta Domestic survey data and tables were prepared by Raymond I. Eldridge III, statistical assistant, and the world production . table was prepared by Glenn J. Wallace, international data coordinator. in 2004, production of talc increased to 857,000 metric tons (t) valued at $23.3 million from 840,000 t valued at
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Mineral resource of the Month: Clay | U.S. Geological Survey
Robert L. Virta: Publication Type: Article: Publication Subtype: Journal Article: Series Title: Earth: Index ID: 70044789: Record Source: USGS Publications Warehouse: USGS Organization: National Minerals Information Center: Contact. National Minerals Information Center 988 National Center 12201 Sunrise Valley Drive Reston, VA 20192
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By Robert L. Virta
By Robert L. Virta Domestic survey data were prepared by Christopher H. Lindsay, statistical assistant. Wollastonite, a calcium metasilicate (CaSiO3), has a theoretical composition of 48.3% calcium oxide and 51.7% silicon dioxide but may contain trace to minor amounts of aluminum, iron, magnesium, manganese, potassium, and sodium.
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Kaolin | U.S. Geological Survey
The article reports on the market performance of kaolin in the U.S. in 2009 and presents an outlook for its 2010 performance. There was a decline in the domestic sales of kaolin from 6.74 measurement ton (Mt) to 5.2 Mt. Companies in the country engaged in kaolin production include Advanced Primary Minerals Corp., Applied Minerals Inc., and Daleco Resources Corp.
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Mineral commodity profiles -- asbestos
An official website of the United States government. Here's how you know
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Mineral commodity profiles -- asbestos | U.S. Geological Survey
An official website of the United States government. Here's how you know
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Mineral resource of the month: natural and synthetic zeolites
Volcanic rocks containing natural zeolites — hydrated aluminosilicate minerals that contain alkaline and alkaline-earth metals — have been mined worldwide for more than 1,000 …
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Ball clay
The article reports on the global market performance of ball clay in 2009 and presents an outlook for its 2010 performance. Several companies mined ball call in the country including Old Hickey Clay Co., Kentucky-Tennessee Clay Co., and H.C. Spinks Clay Co. Information on the decline in ball clay imports and exports is also presented....
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By Robert L. Virta
By Robert L. Virta Domestic survey data and tables were prepared by Christopher H. Lindsay, statistical assistant, and the world production table was prepared by Glenn J. Wallace, international data coordinator. The mineral talc is a hydrous magnesium silicate. A massive talcose rock is called steatite, and an impure massive variety is
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U.S. Talc—Baby Powder and Much More
Virta, R.L., 1998, Talc and pyrophyllite, in Minerals yearbook, metals and minerals 1996, vol. I: U.S. G eol gical Surv y, p . 891– 7 Information For more on the U.S. talc industry contact: Robert L. Virta U.S. Geological Survey Reston, VA (703) 648-7726 [email protected] For more on U.S. talc geology contact: Bradley S. Van Gosen
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9781288750030
Asbestos: Geology, Mineralogy, Mining, and Uses: Open-File Report 2002-149 Robert L Virta Author. Find all books from U. S. Department of the Interior, United States Geological Survey (USGS) Virta, Robert L.. At find-more-books you can find used, antique and new books, compare results and immediately purchase your selection at the best price. 9781288750030
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FC2VGRC55DZ77QA4O5L7DPBQEUDIQG52.pdf
TALC AND PYROPHYLLITE—1999 76.1 T ALC AND P YROPHYLLITE By Robert L. Virta Domestic survey data and tables were prepared by Christopher H. Lindsay, statistical assistant, and the world production table was prepared by Glenn J. Wallace, international data coordinator. The mineral talc is a hydrous magnesium silicate. A massive talcose rock is called steatite, …
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Worldwide Asbestos Supply and Consumption Trends from 1900
Robert L. Virta: Publication Type: Report: Publication Subtype: USGS Numbered Series: Series Title: Circular: Series Number: 1298: Index ID: cir1298: Record Source: USGS Publications Warehouse: USGS Organization: Mineral Resources Program: Contact. Mineral Resources Program Office 913 National Center 12201 Sunrise Valley Drive Reston, VA 20192
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Mineral Commodity Profiles—Asbestos
Mineral Commodity Profiles—Asbestos By Robert L. Virta Hodgson, 1986, p. 110). Chrysotile has been the most com-monly used form of asbestos, followed by crocidolite, amosite, and …
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Common clay and shale in 2013
Explore recent publications by USGS authors; ... Robert L. Virta. Links. The Publications Warehouse does not have links to digital versions of this publication at this time Download citation as: ... National Minerals Information Center: Description: 1 p. First page: 43: Online Only (Y/N) N:
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U.S. Talc—Baby Powder and Much More
USGS Fact Sheet FS-065-00 September 2000 U.S. Department of the Interior ... Talc is a hydrous silicate mineral composed of magnesium (Mg), silicon and oxygen (SiO 2, silica), and water. Its chemical formula is Mg 3Si 4O ... Robert L. Virta U.S. Geological Survey Reston, VA (703) 648-7726 [email protected]
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