Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportAdd Glossary Item
StatisticsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Etta Mine, Keystone, Keystone District, Pennington Co., South Dakota, USA

This page is currently not sponsored. Click here to sponsor this page.
 
 
A lithium-niobium/tantalum-tin muscovite mine in pegmatite. Started in 1883. Owned by the Harney Peak Tin Co. This mine is famous for its huge crystals.

Originally exploited for muscovite in 1883, but acquired by the Harney Peak Tin Mining Company. Tin was never encountered in economic concentrations and the company collapsed by 1893 in "The Black Hills Tin Scandal".

Lithium (spodumene) mining commenced in 1898 and ceased in 1959. Over the years, the mine produced muscovite, niobium, tantalum, beryl and feldspar.

Mineral List



101 entries listed. 89 valid minerals.

The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Norton, James J. (1964) Pegmatites and other Precambrian Rocks in the Southern Black Hills; Geology and mineral deposits of some pegmatites in the southern Black Hills, South Dakota. USGS Professional Paper 297E.

Dana, E.S. (1892) System of Mineralogy, 6th. Edition, New York: 1088.

Rocks & Minerals: 10: 121-122, 146-147.

Rocks & Minerals: 57: 160.

Rocks & Minerals: 60: 110, 112.

Rocks & Minerals: 75(3): 156-169.

"A History of Black Hills Pegmatites", Matrix Magazine, Volume 10, Number 3, Tom Loomis

External Links


Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2015, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: July 28, 2015 20:51:49 Page generated: July 26, 2015 13:51:25