Quartz from Butte Mining District (Summit Valley Mining District), Silver Bow County, Montana, USA

Quartz

Moose Mine, Walkerville, Butte Mining District, Silver Bow County, Montana, USA

Smoky Quartz

Butte Mining District, Silver Bow County, Montana, USA

Quartz, etc.

Butte Mining District, Silver Bow County, Montana, USA

Quartz, etc.

Butte Mining District, Silver Bow County, Montana, USA

Quartz

Moose Mine, Walkerville, Butte Mining District, Silver Bow County, Montana, USA

Smoky Quartz

Butte Mining District, Silver Bow County, Montana, USA

Quartz, etc.

Butte Mining District, Silver Bow County, Montana, USA

Quartz

Moose Mine, Walkerville, Butte Mining District, Silver Bow County, Montana, USA

Smoky Quartz

Butte Mining District, Silver Bow County, Montana, USA

Quartz, etc.

Butte Mining District, Silver Bow County, Montana, USA

Quartz, etc.

Butte Mining District, Silver Bow County, Montana, USA


USA
Montana Silver Bow County ⓘ Butte Mining District (Summit Valley Mining District)	[var. Chalcedony] The Mineralogy of The Butte District, Montana Guilbert and Zeihen
ⓘ Adams Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Altona Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Anaconda Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Anna Mine	Anaconda Mining Company Collection
ⓘ Anselmo Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Badger Mine	Anaconda Mining Company Collection
ⓘ Bell Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Bellona Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Belmont Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Berkeley Mine	Anaconda Mining Company Collection
ⓘ Berkeley Pit	The Mineralogy of The Butte District, Montana Guilbert and Zeihen 1964
ⓘ Bertha Mines	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Blue Jay Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Buffalo Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Burlington Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Cambers Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Clear Grit Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Clinton Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Colleen Bawn prospect	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Colorado Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Colusa-Parrot Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Continental Pit	Mineralogical Record 33:1
ⓘ Diamond Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ East Colusa Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Roberts, Willard Lincoln, Rapp, George Robert Jr., Weber, Julius (1974) Encyclopedia of Minerals (1st ed.) Van Nostrand Reinhold Co., New York. Landon, R.E., Mogilnor, A.H. (1933) Colusite, a new mineral of the sphalerite group. American Mineralogist: 18: 528-533.
ⓘ East Valley Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Edith May Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Elba Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Ella Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Elm-Orlu Mine	Sales, R. (1914) Ore deposits at Butte, Montana. American Institute of Mining and Metallurgical Engineers Transactions, Vol. 46, p. 4-106.
ⓘ Emma Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Betts, John (n.d.) John Betts website listing.
ⓘ Estella Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Gagnon Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Gem Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Geyman Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Glengarry Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Gold Hill Mine	Winchell, Alexander Newton (1914) Mining districts of the Dillon quadrangle, Montana, and adjacent areas. Bulletin Vol. 574. US Geological Survey doi:10.3133/b574 Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Green Copper Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Ground Squirrel Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Harrington Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ High Ore Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Homestake Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Ida Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Iduna Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Independence Mine	Collected by Dan Evanich in 2021. Visual identification
ⓘ Iowa Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ J.I.C. Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Jessie Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Kelley Mine	Guidebook for the Butte Field Meeting of the Society Of Economic Geologists, 1973
ⓘ Kit Carson Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Kossuth Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Late Aquisition Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Leonard Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. J Lorengo collection
ⓘ Little Mina Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Lizzie Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Maggie Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Mat Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Minnie Jane Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Modoc Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Monitor Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Moonlight Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Moscow Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Mount Moriah Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Mountain Consolidated Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. J.A. Lorengo collection
ⓘ Mountain View Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Nettie Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Neversweat Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Nipper Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Northwestern Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Norwich Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Oden Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Old Glory Mine	Anaconda Mining Company Collection
ⓘ Ophir Mine	Sales, R. (1914) Ore deposits at Butte, Montana. American Institute of Mining and Metallurgical Engineers Transactions, Vol. 46, p. 4-106.
ⓘ Original Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Orphan Girl Mine
ⓘ Otisco Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Parnell Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Parrot Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Pegmatite occurrences	Gobla, Michael J. (2012) Montana Mineral Locality Index. Rocks & Minerals, 87 (3) 208-240 doi:10.1080/00357529.2012.676825
ⓘ Pennsylvania Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Pittsmont Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Poulin Mine (Stella Mine; Buffalo Mine)	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Rarus Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Reins Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Saint Lawrence Mine (St. Lawrence Mine)	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Sankey Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Sarsfield Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Schieitzer-Monitor Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Silver Bow deposits	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Silver Bow Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. (2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Number Three shaft	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Silver King Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Sinbad prospect	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Six O'Clock Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Smokehouse Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Snowball Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Speculator Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Steward Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. J.A. Lorengo collection
ⓘ Tramway Mine
ⓘ Travona Mine
ⓘ Tuolumne Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Tzarina Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Unnamed Mn mine [1]	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Walkerville ⓘ Alice Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Amy Silversmith Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Atlantic Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Belcher Prospect	Frank Karasti
ⓘ Belle of Butte Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Black Rock Mine	Sales, R. (1914) Ore deposits at Butte, Montana. American Institute of Mining and Metallurgical Engineers Transactions, Vol. 46, p. 4-106.
ⓘ Corra Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ East Gray Rock Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Goldsmith Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Green Mountain Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Lexington Mine	Gammons, C. H., Szarkowski, J., & Stevenson, R. (2016) New investigations of the mineralogy of silver in the world-class porphyry-lode deposits of Butte, MT. Mining engineering Magazine website. (2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Magna Charta Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Marget Ann Mine	Tiffany Ostenburg (2022) Mineralogy and Fluid Inclusion Study of the Marget Ann Mine of the Butte Mining District, Silver Bow County, Montana. Masters thesis, Montana Tech. 94pp Gammons, C. H., Szarkowski, J., & Stevenson, R. (2016) New investigations of the mineralogy of silver in the world-class porphyry-lode deposits of Butte, MT. Mining engineering Magazine website
ⓘ Moose Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Moulton Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Sales, R. (1914) Ore deposits at Butte, Montana. American Institute of Mining and Metallurgical Engineers Transactions, Vol. 46, p. 4-106.
ⓘ Silver Lick Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Snow Drift Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Springfield Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Syndicate pit	Rob Lavinsky photo
ⓘ Valdemere Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Wabash Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Wake-up-Jim Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ Walkerville area	XRD Analysis by John Attard 2017
ⓘ West Gray Rock Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey. Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ West Colusa Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74
ⓘ West Valley Mine	Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74

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