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Cuyuna North Range, Crow Wing Co., Minnesota, USA

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District consists of a semicircular area 5 miles in diameter north-northwest of Ironton, Minnesota. The ores are typical banded iron formation that have been metamorphosed and later concentrated into both brown and red hematite ore. Some of the mines also contain significant manganese mineralization. Ores have been mined both by underground methods as well as by open pit mining. The open pits are now filled by lakes. Best reference is USGS Professional Paper 407 "Geology and Ore Deposits of the Cuyuna North Range, Minnesota"





Map Reference: 46°22'N , 94°10'W

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Mineral list contains entries from the region specified including sub-localities


Mineral List:
'Adularia'
Aegirine
Albite
'Albite-Anorthite Series'
'Amphibole Group'
Arsenopyrite
Baryte
Calcite
'Chalcedony
var: Binghamite'
'Chlorite Group'
Cryptomelane
Diopside
 Enstatite
Epidote
Galena
Goethite
Groutite (TL)
Grunerite
Hematite
Limonite
Magnetite
Manganite
Microcline
Minnesotaite (TL)
 Nontronite
'Psilomelane'
Pyrite
Pyrolusite
Quartz
var: Chert
Rhodochrosite
'Sericite'
Siderite
var: Manganoan Siderite
Stilpnomelane
'Tourmaline'


333 entries listed. 25 valid minerals. 2 type localities (valid minerals).

Localities in this Region:
USA
 
  • Minnesota
    • Crow Wing Co.
      • Cuyuna North Range
        • Crosby
        • Riverton

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!
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Copyright © Jolyon Ralph and Ida Chau 1993-2009. Jobs in Minnesota, USA Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 22nd Nov 2009 12:19:14