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Honeycomb-weathered sandstone (Dundee Sandstone, Middle Pennsylvanian; cliffs along Walnut Creek Bottom Road, west of Dundee, Ohio, USA) 4
Honeycomb-weathered sandstone (Dundee Sandstone, Middle Pennsylvanian; cliffs along Walnut Creek Bottom Road, west of Dundee, Ohio, USA) 4
by James St. John

クリエイティブ・コモンズ 表示 2.1

Quartzose sandstone (Dundee Sandstone, Middle Pennsylvanian; cliffs along Walnut Creek Bottom Road, west of Dundee, Ohio, USA) 2
Quartzose sandstone (Dundee Sandstone, Middle Pennsylvanian; cliffs along Walnut Creek Bottom Road, west of Dundee, Ohio, USA) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1

Garnetiferous gneiss (Archean, ~3.3 Ga; Quad Creek section, Beartooth Mountains, Montana, USA)
Garnetiferous gneiss (Archean, ~3.3 Ga; Quad Creek section, Beartooth Mountains, Montana, USA)
by James St. John

クリエイティブ・コモンズ 表示 2.1


Pyrite with Chlorite
Pyrite with Chlorite
by PMEUBC

クリエイティブ・コモンズ 表示-継承 2.1

Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 6
Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 6
by James St. John

クリエイティブ・コモンズ 表示 2.1

Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 11
Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 11
by James St. John

クリエイティブ・コモンズ 表示 2.1


Beauchamp Falls
Beauchamp Falls
by JC Merriman

クリエイティブ・コモンズ 表示 2.1

Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 12
Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 12
by James St. John

クリエイティブ・コモンズ 表示 2.1

Sulfidic argillite (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 8
Sulfidic argillite (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 8
by James St. John

クリエイティブ・コモンズ 表示 2.1


Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill cores at the Potter Mine, east of Timmins, Ontario, Canada) 2
Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill cores at the Potter Mine, east of Timmins, Ontario, Canada) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1

Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 14
Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 14
by James St. John

クリエイティブ・コモンズ 表示 2.1

Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 13
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 13
by James St. John

クリエイティブ・コモンズ 表示 2.1


Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 28
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 28
by James St. John

クリエイティブ・コモンズ 表示 2.1

Sulfidic argillite (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 6
Sulfidic argillite (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 6
by James St. John

クリエイティブ・コモンズ 表示 2.1

Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill cores at the Potter Mine, east of Timmins, Ontario, Canada) 13
Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill cores at the Potter Mine, east of Timmins, Ontario, Canada) 13
by James St. John

クリエイティブ・コモンズ 表示 2.1


Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 10
Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 10
by James St. John

クリエイティブ・コモンズ 表示 2.1

Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 5
Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 5
by James St. John

クリエイティブ・コモンズ 表示 2.1

Sulfidic argillite & polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 3
Sulfidic argillite & polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 3
by James St. John

クリエイティブ・コモンズ 表示 2.1


Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 30
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 30
by James St. John

クリエイティブ・コモンズ 表示 2.1

Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 35
Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 35
by James St. John

クリエイティブ・コモンズ 表示 2.1

Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 15
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 15
by James St. John

クリエイティブ・コモンズ 表示 2.1


Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 9
Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 9
by James St. John

クリエイティブ・コモンズ 表示 2.1

Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 21
Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 21
by James St. John

クリエイティブ・コモンズ 表示 2.1

Sulfidic basaltic lapillistone (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 7
Sulfidic basaltic lapillistone (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 7
by James St. John

クリエイティブ・コモンズ 表示 2.1


Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 5
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 5
by James St. John

クリエイティブ・コモンズ 表示 2.1

Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 23
Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 23
by James St. John

クリエイティブ・コモンズ 表示 2.1

Old iron mine & nelsonite rocks (Proterozoic; Port Leyden, western Adirondacks, New York State, USA) 5
Old iron mine & nelsonite rocks (Proterozoic; Port Leyden, western Adirondacks, New York State, USA) 5
by James St. John

クリエイティブ・コモンズ 表示 2.1


Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 8
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 8
by James St. John

クリエイティブ・コモンズ 表示 2.1

Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 7
Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 7
by James St. John

クリエイティブ・コモンズ 表示 2.1

Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 25
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 25
by James St. John

クリエイティブ・コモンズ 表示 2.1


Sulfidic argillite & polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill cores at the Potter Mine, east of Timmins, Ontario, Canada) 2
Sulfidic argillite & polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill cores at the Potter Mine, east of Timmins, Ontario, Canada) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1

Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 18
Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 18
by James St. John

クリエイティブ・コモンズ 表示 2.1

Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 7
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 7
by James St. John

クリエイティブ・コモンズ 表示 2.1


Sulfidic argillite (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 5
Sulfidic argillite (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 5
by James St. John

クリエイティブ・コモンズ 表示 2.1

Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 5
Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 5
by James St. John

クリエイティブ・コモンズ 表示 2.1

Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; Potter Mine, east of Timmins, Ontario, Canada) 2
Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; Potter Mine, east of Timmins, Ontario, Canada) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1


Sulfidic basaltic lapillistone (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 5
Sulfidic basaltic lapillistone (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 5
by James St. John

クリエイティブ・コモンズ 表示 2.1

Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 33
Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 33
by James St. John

クリエイティブ・コモンズ 表示 2.1

Pyritic nelsonite (Proterozoic; Port Leyden, western Adirondacks, New York State, USA) 11
Pyritic nelsonite (Proterozoic; Port Leyden, western Adirondacks, New York State, USA) 11
by James St. John

クリエイティブ・コモンズ 表示 2.1


Sulfidic basaltic lapillistone (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 8
Sulfidic basaltic lapillistone (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 8
by James St. John

クリエイティブ・コモンズ 表示 2.1

Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 32
Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 32
by James St. John

クリエイティブ・コモンズ 表示 2.1

Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 34
Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 34
by James St. John

クリエイティブ・コモンズ 表示 2.1


Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; Rt. 169 roadcut just east of Ely, Minnesota, USA) 1
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; Rt. 169 roadcut just east of Ely, Minnesota, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 8
Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 8
by James St. John

クリエイティブ・コモンズ 表示 2.1

Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 30
Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 30
by James St. John

クリエイティブ・コモンズ 表示 2.1


Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill cores at the Potter Mine, east of Timmins, Ontario, Canada) 26
Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill cores at the Potter Mine, east of Timmins, Ontario, Canada) 26
by James St. John

クリエイティブ・コモンズ 表示 2.1

Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 13
Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 13
by James St. John

クリエイティブ・コモンズ 表示 2.1

Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill cores at the Potter Mine, east of Timmins, Ontario, Canada) 28
Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill cores at the Potter Mine, east of Timmins, Ontario, Canada) 28
by James St. John

クリエイティブ・コモンズ 表示 2.1


Sulfidic basaltic lapillistone (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill cores at the Potter Mine, east of Timmins, Ontario, Canada) 1
Sulfidic basaltic lapillistone (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill cores at the Potter Mine, east of Timmins, Ontario, Canada) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

Quartzose sandstone (Dundee Sandstone, Middle Pennsylvanian; cliffs along Walnut Creek Bottom Road, west of Dundee, Ohio, USA) 7
Quartzose sandstone (Dundee Sandstone, Middle Pennsylvanian; cliffs along Walnut Creek Bottom Road, west of Dundee, Ohio, USA) 7
by James St. John

クリエイティブ・コモンズ 表示 2.1

Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 2
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1


Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 18
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 18
by James St. John

クリエイティブ・コモンズ 表示 2.1

Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 16
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 16
by James St. John

クリエイティブ・コモンズ 表示 2.1

Hydrothermal veins & argillic zone alteration of wall rock (Orphan Boy Mine, Butte, Montana, USA) 4
Hydrothermal veins & argillic zone alteration of wall rock (Orphan Boy Mine, Butte, Montana, USA) 4
by James St. John

クリエイティブ・コモンズ 表示 2.1


Sulfidic hyaloclastite (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 1
Sulfidic hyaloclastite (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

Pyritic dacitic lapilli metatuff (pyritic dacitic meta-lapillistone) (Neoarchean, ~2.7-2.72 Ga; vicinity of Soudan Mine, Soudan, Minnesota, USA)
Pyritic dacitic lapilli metatuff (pyritic dacitic meta-lapillistone) (Neoarchean, ~2.7-2.72 Ga; vicinity of Soudan Mine, Soudan, Minnesota, USA)
by James St. John

クリエイティブ・コモンズ 表示 2.1

Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 20
Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 20
by James St. John

クリエイティブ・コモンズ 表示 2.1


Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 4
Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 4
by James St. John

クリエイティブ・コモンズ 表示 2.1

Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 22
Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 22
by James St. John

クリエイティブ・コモンズ 表示 2.1

Old iron mine & nelsonite rocks (Proterozoic; Port Leyden, western Adirondacks, New York State, USA) 3
Old iron mine & nelsonite rocks (Proterozoic; Port Leyden, western Adirondacks, New York State, USA) 3
by James St. John

クリエイティブ・コモンズ 表示 2.1



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