Cuyuna North Range, Crow Wing County, Minnesota, USA (original) (raw)

ⓘ Aegirine

Formula: NaFe3+Si2O6

Localities: Reported from at least 6 localities in this region.

ⓘ Albite

Formula: Na(AlSi3O8)

ⓘ Alunite

Formula: KAl3(SO4)2(OH)6

ⓘ 'Amphibole Supergroup'

Formula: A B2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2

ⓘ 'Apatite'

Formula: Ca5(PO4)3(Cl/F/OH)

ⓘ Aragonite

Formula: CaCO3

ⓘ Arsenopyrite

Formula: FeAsS

ⓘ Baryte

Formula: BaSO4

ⓘ Calcite

Formula: CaCO3

Localities:

Merritt No. 2 Mine (Gorham Garbert Company), Cuyuna North Range, Crow Wing County, Minnesota, USA
Mahnomen pit, Ironton, Cuyuna North Range, Crow Wing County, Minnesota, USA
Kennedy mine, Cuyuna North Range, Crow Wing County, Minnesota, USA

ⓘ Chalcopyrite

Formula: CuFeS2

ⓘ 'Chlorite Group'

Localities: Reported from at least 8 localities in this region.

ⓘ Cryptomelane

Formula: K(Mn4+7Mn3+)O16

Localities:

Maroco Mine (Adbar mine), Ironton, Cuyuna North Range, Crow Wing County, Minnesota, USA
US Bureau Mines core, Gloria mine (Donahue mine; McKensie mine; Lauretta Manganiferous Mines), Cuyuna North Range, Crow Wing County, Minnesota, USA

ⓘ Diopside

Formula: CaMgSi2O6

ⓘ Enstatite

Formula: Mg2Si2O6

Description: silicic enstatite

ⓘ Epidote

Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)

ⓘ Galena

Formula: PbS

ⓘ Goethite

Formula: Fe3+O(OH)

Localities: Reported from at least 13 localities in this region.

ⓘ Groutite (TL)

Formula: Mn3+O(OH)

Localities:

Sagamore Mangan No. 2 pit, Riverton, Cuyuna North Range, Crow Wing County, Minnesota, USA
Mahnomen pit, Ironton, Cuyuna North Range, Crow Wing County, Minnesota, USA
Sagamore Mine (Syracuse property), Riverton, Cuyuna North Range, Crow Wing County, Minnesota, USA
Section 6 mine, Cuyuna North Range, Crow Wing County, Minnesota, USA
Robert Mine (Roberts Mine; Kennedy Mine), Cuyuna North Range, Crow Wing County, Minnesota, USA

ⓘ Grunerite

Formula: ◻{Fe2+2}{Fe2+5}(Si8O22)(OH)2

ⓘ Hematite

Formula: Fe2O3

Localities: Reported from at least 89 localities in this region.

ⓘ Hematite var. Martite

Formula: Fe2O3

ⓘ Hisingerite

Formula: Fe3+2(Si2O5)(OH)4 · 2H2O

Description: Dark red-brown, resinous luster; amorphous (by PXRD); qualitative tests show large amounts of Fe,Si,H2O.

ⓘ 'K Feldspar'

ⓘ 'K Feldspar var. Adularia'

Formula: KAlSi3O8

ⓘ Kutnohorite

Formula: CaMn2+(CO3)2

ⓘ 'Limonite'

ⓘ Magnesio-riebeckite

Formula: ◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2

References:

McSwiggen, P. L., Morey, G. B., & Cleland, J. M. (1994). Occurrence and genetic implications of hyalophane in manganese-rich iron-formation, Cuyuna Iron Range, Minnesota, USA. Mineralogical Magazine, 58(392), 387-400.

ⓘ Magnetite

Formula: Fe2+Fe3+2O4

Localities: Reported from at least 86 localities in this region.

ⓘ Manganite

Formula: Mn3+O(OH)

Localities:

Robert Mine (Roberts Mine; Kennedy Mine), Cuyuna North Range, Crow Wing County, Minnesota, USA
Sagamore Mine (Syracuse property), Riverton, Cuyuna North Range, Crow Wing County, Minnesota, USA
US Bureau Mines core, Gloria mine (Donahue mine; McKensie mine; Lauretta Manganiferous Mines), Cuyuna North Range, Crow Wing County, Minnesota, USA

ⓘ Microcline

Formula: K(AlSi3O8)

ⓘ Microcline var. Hyalophane

Formula: (K,Ba)[Al(Si,Al)Si2O8]

References:

McSwiggen, P. L., Morey, G. B., & Cleland, J. M. (1994). Occurrence and genetic implications of hyalophane in manganese-rich iron-formation, Cuyuna Iron Range, Minnesota, USA. Mineralogical Magazine, 58(392), 387-400.

ⓘ Minnesotaite (TL)

Formula: Fe2+3Si4O10(OH)2

Localities:

Cuyuna North Range, Crow Wing County, Minnesota, USA
Sagamore Mine (Syracuse property), Riverton, Cuyuna North Range, Crow Wing County, Minnesota, USA
Alstead-North Hillcrest mine, Cuyuna North Range, Crow Wing County, Minnesota, USA

ⓘ Muscovite

Formula: KAl2(AlSi3O10)(OH)2

Localities:

US Bureau Mines core, Gloria mine (Donahue mine; McKensie mine; Lauretta Manganiferous Mines), Cuyuna North Range, Crow Wing County, Minnesota, USA
Mahnomen No. 3 mine, Ironton, Cuyuna North Range, Crow Wing County, Minnesota, USA
Pennington mine, Cuyuna North Range, Crow Wing County, Minnesota, USA

ⓘ Muscovite var. Sericite

Formula: KAl2(AlSi3O10)(OH)2

Localities:

US Bureau Mines core, Gloria mine (Donahue mine; McKensie mine; Lauretta Manganiferous Mines), Cuyuna North Range, Crow Wing County, Minnesota, USA
Mahnomen No. 3 mine, Ironton, Cuyuna North Range, Crow Wing County, Minnesota, USA

ⓘ Nontronite

Formula: Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi2]O8

ⓘ 'Psilomelane'

ⓘ Pyrite

Formula: FeS2

Localities:

Cuyuna North Range, Crow Wing County, Minnesota, USA
Portsmouth Mine, Cuyuna North Range, Crow Wing County, Minnesota, USA
Sagamore Mangan No. 2 pit, Riverton, Cuyuna North Range, Crow Wing County, Minnesota, USA
US Bureau Mines core, Gloria mine (Donahue mine; McKensie mine; Lauretta Manganiferous Mines), Cuyuna North Range, Crow Wing County, Minnesota, USA
Pennington mine, Cuyuna North Range, Crow Wing County, Minnesota, USA

ⓘ Pyrolusite

Formula: Mn4+O2

Localities:

US Bureau Mines core, Gloria mine (Donahue mine; McKensie mine; Lauretta Manganiferous Mines), Cuyuna North Range, Crow Wing County, Minnesota, USA
Maroco Mine (Adbar mine), Ironton, Cuyuna North Range, Crow Wing County, Minnesota, USA
Ferro Mine (Duluth-Brainerd Mine), Cuyuna North Range, Crow Wing County, Minnesota, USA
Louise mine (Cuyuna-Mille Lacs mine), Cuyuna North Range, Crow Wing County, Minnesota, USA

ⓘ Pyrrhotite

Formula: Fe1-xS

ⓘ Quartz

Formula: SiO2

Localities: Reported from at least 19 localities in this region.

ⓘ Quartz var. Binghamite

Formula: SiO2

ⓘ Quartz var. Chalcedony

Formula: SiO2

ⓘ Rhodochrosite

Formula: MnCO3

Localities:

Cuyuna North Range, Crow Wing County, Minnesota, USA
Merritt No. 2 Mine (Gorham Garbert Company), Cuyuna North Range, Crow Wing County, Minnesota, USA
Mangan No. 1 mine (Mangan-Stai mine), Cuyuna North Range, Crow Wing County, Minnesota, USA

ⓘ Rhodonite

Formula: CaMn3Mn[Si5O15]

References:

McSwiggen, P. L., Morey, G. B., & Cleland, J. M. (1994). Occurrence and genetic implications of hyalophane in manganese-rich iron-formation, Cuyuna Iron Range, Minnesota, USA. Mineralogical Magazine, 58(392), 387-400.

ⓘ Siderite

Formula: FeCO3

Localities: Reported from at least 13 localities in this region.

ⓘ Siderite var. Manganese-bearing Siderite

Formula: (Fe,Mn)CO3

ⓘ Stilpnomelane

Formula: (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O

Localities: Reported from at least 9 localities in this region.

ⓘ 'Tourmaline'

Formula: A D3G6(T6O18)(BO3)3X3Z

Localities:

Portsmouth Mine, Cuyuna North Range, Crow Wing County, Minnesota, USA
Merritt No. 2 Mine (Gorham Garbert Company), Cuyuna North Range, Crow Wing County, Minnesota, USA
US Bureau Mines core, Gloria mine (Donahue mine; McKensie mine; Lauretta Manganiferous Mines), Cuyuna North Range, Crow Wing County, Minnesota, USA
Pennington mine, Cuyuna North Range, Crow Wing County, Minnesota, USA
Rabbit Lake mine, Cuyuna North Range, Crow Wing County, Minnesota, USA