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LocalitiesArgo tunnel (Newhouse tunnel), Idaho Springs Mining District (Virginia Mining District), Clear Creek Co., Colorado, USA

17th Oct 2019 22:50 UTCKevin Conroy Expert

A two-parter here.   Should the Argo Tunnel be in the Idaho Springs Mining District ( ) instead of the Lamartine District?

Next, would it be possible to move the photo ( ) to the Argo Tunnel page, after it's decided which District it's in?

17th Oct 2019 23:56 UTCScott Rider

I see that both districts overlap where the mine is located.  I went to google and found some historical documents but nothing gave a specific name to a mining district, just counties and Idaho Springs...  

I wonder, were both districts named around the same time.  Or was one named before the other, and when does Argo fit within that timeline.  Sorry, that doesn't really answer your  question but maybe it'll spark something with someone more knowledgeable about these districts...

18th Oct 2019 01:40 UTCKevin Conroy Expert

On page 3 of Open-File Report 66-87 by Robert Hadley Moench and Avery Ala Drake Jr.  (Mines and Prospects, Idaho Springs District, Clear Creek and Gilpin Counties, Colorado - Descriptions and Maps) Argo Tunnel is included as in the Idaho Springs District.

18th Oct 2019 14:54 UTCKevin Conroy Expert


I checked some references, and the Lamartine District is located west of the Idaho Springs District.   The top figure is from Geology and Ore Deposits of the Chicago Creek Area, Clear Creek County, Colorado, USGS Professional Paper 319, while the bottom map is from Geology and Ore Deposits of the Freeland-Lamartine District, Clear Creek County, Colorado, USGS Bulletin 1032-B.

The last reference also listed the mines and tunnels in the District: Ariadne mine, Avalanche mine, Baltimore mine, Belle Creole tunnel, Bell of the West tunnel, Brazil mine, Brighton mine, Crazy Girl mine, Diamond Mountain (Lanagan) mine, Freeland group of mines, Golden Rod mine, Harrisburg mine, Invincible mine, Lamartine mine, Little Johnie group of mines, Lone Tree mine, Mendick mine, Miller mine, New Era mine, Poor Man mine, Silver Link mine, Teller mine, Turner mine, West London tunnel, and small inaccessible mines and prospects.

This seems to indicate that the Argo is only in the Idaho Springs District.

18th Oct 2019 15:13 UTCJolyon Ralph Founder

Seems a sensible deduction

18th Oct 2019 15:16 UTCChester S. Lemanski, Jr. Manager

Don't forget that this a drainage/haulage tunnel, not a mine. It serviced several mines along its length (many veins crosscut). It's not where the tunnel mouth is, but rather, where the mines it serviced were. This may not have any influence, but it may. 

18th Oct 2019 15:58 UTCTony L. Potucek Expert

Years ago, when working and living in Colorado, I visited a number of the mines in the Idaho Springs area, including the Lamartine Mine located west of Idaho Springs as shown on the USGS figures.  I was looking for tetrahedrite which was reported to be nicely crystallized.  The Argo is located on the north side of Idaho Springs, the town, on the northern bank of Clear Creek, and is driven to the north, draining mines in the northern part of the Idaho Springs area.  Using my copies of USGS articles, it was fairly clear to me that the two locations were distinct districts and were treated as such by the USGS.  I hope this helps.

18th Oct 2019 16:08 UTCDavid Von Bargen Manager

The tunnel ended at the Gunnell mine in Central City.
Mining district boundaries tended to move around a bit during that time.

18th Oct 2019 19:10 UTCKevin Conroy Expert

David, very true, so at best the Argo may have been considered to be part of the Central City District, but definitely not the Lamartine District.

21st Oct 2019 02:10 UTCKevin Conroy Expert

The Argo Tunnel locality has been updated per the references to reside in the Idaho Springs Mining District.
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