Mine detail: General Chemical Corp. Trona Mine and Plant

Previously called 'Green River Facility (General Chemical), General Chemical Corp. Mine, Allied Chemical Corp. Mine, Green River Allied Mine, Allied Trona, Alchem Trona Mine, Allied Chemical Company Mill, General Chemical Green River Facility'

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Location

Lat / long:

41.59168, -109.75488

Resource(N)

Primary:	Sodium
Tertiary:	Halite, Oil Shale
Ore:	Trona
Gangue:	Shortite, Calcite, Dolomite, Gaylussite, Nahcolite
Orebody form:	TABULAR: BLANKET
Other material:	Halite, Oil Shale
Discovery year:	1938

Production

Operation type:	Underground
Deposit type:	Evaporite
Production size:	Large
Development status:	Producer
Production years:	current as of 2009

Geology

Host rock:	Green River, Wilkins Peak Member: Trona And Evaporite Bearing Strata
Host type:	Evaporite
Structure:	Basin And Range Province; Green River Basin; East Of Overthrust Belt, South Of Wind River Mts., Rock Springs Uplift, East Of Trona Area, Stratigraphic High During Much Of Green River Fm. Depositional Period. It Created A Barrier Restricting Water Circulation And Aiding Evaporite Precipitation.
Alteration processes:	Trona May Be In Part A Diagenetic Product Of Reaction Between Evaporite Minerals And Na-Rich Water From The Weathering Of Andesitic Tuffs Of Green River Formation. Geochemical Studies (Parker, Et Al, 1971) Have Shown That The Green River Was Probably A Source Of Na-Rich Water. Solution Activity And Reorganization Of Material Is Evident Including Enlarged Grainsize And Secondary Redeposition Of Trona (Parker, Et Al, 1971).

References

MRDS	W031828
DEP	10080548
Reference	{Deposit:: USBM MINERALS YEARBOOK 1978-1979.}{Deposit:: PARKER, R.B., 1971, ed., CONTRIBUTIONS TO GEOLOGY, TRONA ISSUE, UNIV. OF WYOMING, V. 10, N. 1.}{Deposit:: MINING MAGAZINE, JANUARY 1989, P. 45.}{Deposit:: http://www.genchem.com/the-green-river-facility.asp [last accessed 09-NOV-2009]}{Deposit:: Dyni, J.R., and Jones, R.W., eds., 1998, Proceedings of the First International Soda Ash Converence, vol. II: Wyoming State Geological Survey Public Information Circular 40, 215 p.}
Reporter	Intermountain Field Operations Center (IFOC), Beougher, Delilah J. (Spanski, Gregory T.), South Dakota School of Mines, Wilson, Anna B., Sutphin, David M.