Mining Intelligence and News
United States

Midas Mine

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Mine TypeUnderground
StatusInactive / Suspended
  • Gold
  • Silver
Mining Method
  • Cut & Fill
  • Longhole stoping
Backfill type ... Lock
Production Start... Lock
SnapshotMidas mine was acquired by Hecla Mining in July 2018. Mine's production and financial results have been included into the Nevada Operations Segment since then.

Production at the Midas mine was suspended in late 2019.

Future Plans
Hecla is focused on advancing the exploration targets within the East Graben Corridor at Midas.
Related AssetNevada Operation


Hecla Mining Company 100 % Indirect
Klondex Midas Operations Inc. is an indirect subsidiary of the Hecla Mining Company.

Deposit type

  • Vein / narrow vein
  • Epithermal


On a general scale, the hydrothermal system and subsequent mineralization developed at Midas is currently interpreted as a low sulfidation, epithermal precious-metal vein system, as part of a larger magmatic system at depth.

The Midas Mine is the largest known Au-Ag epithermal deposit along the Northern Nevada Rift (“NNR”) and is located, located in the mining district of Midas, also known as the Gold Circle district.

The Midas deposit consists of a series of complex steeply dipping, quartz-calcite-adularia precious metal veins hosted by volcanic and volcanoclastic rocks and locally contains mineral grades greater than (>) ten ounces per ton (opt) of gold. Gold mineralization occurs as electrum and is intimately associated with selenide and sulfide minerals. It belongs to a suite of middle Miocene low-sulfidation epithermal gold and silver mineralizing systems associated with magmatism and faulting along the NNR (Leavitt et al., 2004). The mineralization model at Midas is a shallow, low-sulfidation, vertically- and laterally-zoned, epithermal gold-silver system. Rocks in the Midas district are primarily ash flow, air-fall and lithic tuffs, felsic plugs, volcanoclastic sediments and gabbroic sills and dikes.

Gold and silver mineralization at Midas is hosted in several north-west striking veins. The veins are divided into four principle groups based on their location and orientation. The two groups hosting mineral resources are the Main Veins which dip easterly and are predominantly gold mineralization, while the East Veins dip to the west and have a much higher silver content then the main veins.



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Mining Methods


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Crushers and Mills

Milling equipment has not been reported.



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Silver oz 780,3161,345,9891,513,112
Gold Equivalent oz 45,06248,62348,774
All production numbers are expressed as metal in doré.

Operational metrics

Daily milling capacity 1,200 tons1,200 tons1,200 tons1,200 tons
Ore tonnes mined 156,927 tons193,856 tons175,173 tons
Tonnes milled 157,363 tons190,982 tons174,714 tons
Daily milling rate 523 tons479 tons

Production Costs

Cash costs (sold) Gold Equivalent USD 1,008 / oz  
Cash costs (sold) Gold USD
** Net of By-Product.

Operating Costs

UG mining costs ($/t mined) USD 200.49  


Capital expenditures M USD 16.3  
Revenue M USD 59.6  
Operating Income M USD -8.8  

Heavy Mobile Equipment


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Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Feb 29, 2024
....................... Subscription required ....................... Subscription required Subscription required Feb 27, 2024

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Aerial view:


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