Mine detail: Railroad Mine

Previously called 'Held Mine'

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Location: Washington County, Idaho, United States, North America
Lat / long: 44.7631, -116.79222
dep_id: 10070239
mrds_id: W013003
mas_id: 160870009
Commodity type: metallic
Major mineral: Copper
Minor mineral: Bismuth, Gold, Silver
Operation type: Underground
Deposit type: Contact Metasomatic
Production size: Small ammount of material produced
Development status: Past Producer
ore: Bornite, Chalcopyrite
gangue: Actinolite, Bismuth, Epidote, Pyrite, Quartz, Tremolite
orebody_fm: IRREGULAR PODS, CHIMNEYS
work_type: Underground
alteration: Pyritization
conc_proc: Hydrothermal Agents
ore_ctrl: Fracture Fillings; Contact Of Limestone And Quartz Porphyry.
Reporter: Nakai, Terry L.; Miller, Pat, Winters, Dick
hrock_unit: Cuddy Mountain Limestone
hrock_type: Skarn (Tactite),Limestone
arock_type: Volcanic Rock (Aphanitic)
Structure: Domes And Folds; Faults And Steeply Tilted Beds
tectonic: Island Arc
References:
  • Deposit:: BELL, R. N., 1904, REPORT OF THE MINING DISTRICTS OF IDAHO FOR THE YEAR 1903, P. 139 - 140.
  • Deposit:: LIVINGSTON, D. C., 1925, RECON. OF MINERAL AND CUDDY MOUNTAIN DISTRICTS: IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 13, P. 15 - 16.
  • Deposit:: FANKHAUSER, R. E., 1969, GEOLOGY AND MINERALIZATION OF THE SOUTHERN CUDDY MOUNTAINS, WASHINGTON COUNTY, IDAHO: CORVALLIS, OREGON STATE UNIV., MS THESIS, 138 P.
  • Deposit:: BRUCE, W. R., 1971, GEOLOGY, MINERAL DEPOSITS, AND ALTERATION OF PARTS OF THE CUDDY MTN. DIST., WESTERN IDAHO: CORVALLIS, OREGON STATE UNIV., PH.D. THESIS, 165 P.
  • Deposit:: 5) BELL, R.N., 1907 , EIGHTH ANNUAL REPORT OF THE MINING INDUSTRY OF IDAHO FOR THE YEAR 1906 , 172 P.
  • Deposit:: 1904 COMPILE ANN. REPT. OF IDAHO MINING INDUSTRY FOR 1903
  • Deposit:: 1907 COMPILE ANN. REPT. OF IDAHO MINING INDUSTRY FOR 1906
  • Deposit:: 1925 RECON IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 13
  • Deposit:: SEVENTH ANNUAL REPORT MINING INDUSTRY OF IDAHO PG.139-142
  • Deposit:: EIGHTH ANNUAL REPORT MINING INDUSTRY OF IDAHO.PG 168-172
  • Deposit:: NINTH ANNUAL REPORT MINING INDUSTRY OF IDAHO PG 207- 210
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