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Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 1
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, 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) 17
Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 17
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 loose block at Ely visitor center, Ely, Minnesota, USA) 5
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large loose block at Ely visitor center, Ely, Minnesota, USA) 5
by James St. John

クリエイティブ・コモンズ 表示 2.1


Sulfidic basaltic lapillistone (copper ore) (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; Potter Mine, east of Timmins, Ontario, Canada) 1
Sulfidic basaltic lapillistone (copper ore) (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; 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

Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 15
Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 15
by James St. John

クリエイティブ・コモンズ 表示 2.1

Garnet coated with chlorite (probably from Tyrol, Austria) 1
Garnet coated with chlorite (probably from Tyrol, Austria) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1


Garnet coated with chlorite (probably from Tyrol, Austria) 2
Garnet coated with chlorite (probably from Tyrol, Austria) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1

Chlorite schist with magnetite (Vermont, USA) 10
Chlorite schist with magnetite (Vermont, USA) 10
by James St. John

クリエイティブ・コモンズ 表示 2.1

Greenstone (metamorphosed pillow basalt) (Mona Formation, Neoarchean, 2.7 Ga; Rt. 41/Rt. 28 roadcut west of Marquette, Michigan, USA) 2
Greenstone (metamorphosed pillow basalt) (Mona Formation, Neoarchean, 2.7 Ga; Rt. 41/Rt. 28 roadcut west of Marquette, Michigan, 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 loose block at Ely visitor center, Ely, Minnesota, USA) 3
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large loose block at Ely visitor center, Ely, Minnesota, USA) 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 loose block at Ely visitor center, Ely, Minnesota, USA) 4
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large loose block at Ely visitor center, Ely, Minnesota, USA) 4
by James St. John

クリエイティブ・コモンズ 表示 2.1

Sulfidic basaltic lapillistone (copper ore) (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; Potter Mine, east of Timmins, Ontario, Canada) 3
Sulfidic basaltic lapillistone (copper ore) (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; 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


Sulfidic basaltic lapillistone (copper ore) (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; Potter Mine, east of Timmins, Ontario, Canada) 5
Sulfidic basaltic lapillistone (copper ore) (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; 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

Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 1
Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 1
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) 2
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) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1


Sulfidic basaltic lapillistone (copper ore) (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; Potter Mine, east of Timmins, Ontario, Canada) 4
Sulfidic basaltic lapillistone (copper ore) (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; 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

Sulfidic basaltic lapillistone (copper ore) (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; Potter Mine, east of Timmins, Ontario, Canada) 2
Sulfidic basaltic lapillistone (copper ore) (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

Pyritic nelsonite (Proterozoic; Port Leyden, western Adirondacks, New York State, USA) 1
Pyritic nelsonite (Proterozoic; Port Leyden, western Adirondacks, New York State, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1


Détails d'un métagabbro du Chenaillet (faciès schiste vert)
Détails d'un métagabbro du Chenaillet (faciès schiste vert)
by ffigon

クリエイティブ・コモンズ 表示-継承 2.1

Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large loose block at Ely visitor center, Ely, Minnesota, USA) 6
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large loose block at Ely visitor center, Ely, Minnesota, USA) 6
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 loose block at Ely visitor center, Ely, Minnesota, USA) 1
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large loose block at Ely visitor center, Ely, Minnesota, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1


Argillic zone alteration from hydrothermal veins (Orphan Boy Mine, Butte, Montana, USA) 10
Argillic zone alteration from hydrothermal veins (Orphan Boy Mine, Butte, Montana, USA) 10
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 loose block at Ely visitor center, Ely, Minnesota, USA) 9
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large loose block at Ely visitor center, Ely, Minnesota, USA) 9
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) 3
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) 3
by James St. John

クリエイティブ・コモンズ 表示 2.1


Millerite vein (late Paleoproterozoic, 1.85 Ga; 4200 Level of the Strathcona Mine, Sudbury Mining District, Ontario, Canada) 1
Millerite vein (late Paleoproterozoic, 1.85 Ga; 4200 Level of the Strathcona Mine, Sudbury Mining District, Ontario, Canada) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

Exploration drill cores (Potter Mine, east of Timmins, Ontario, Canada)
Exploration drill cores (Potter Mine, east of Timmins, Ontario, Canada)
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) 6
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) 6
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) 9
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) 9
by James St. John

クリエイティブ・コモンズ 表示 2.1

Garnet schist (Late Cretaceous, 89-90 Ma; Garnet Ledge, about 12 km north of Wrangell, southeastern Alaska, USA) 10
Garnet schist (Late Cretaceous, 89-90 Ma; Garnet Ledge, about 12 km north of Wrangell, southeastern Alaska, 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) 23
Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 23
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) 12
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 12
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) 41
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) 41
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) 6
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 6
by James St. John

クリエイティブ・コモンズ 表示 2.1


"The Hindu Goddess Parvati"
"The Hindu Goddess Parvati"
by Clinton Steeds

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 loose block at Ely visitor center, Ely, Minnesota, USA) 2
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large loose block at Ely visitor center, 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) 4
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 4
by James St. John

クリエイティブ・コモンズ 表示 2.1


Honeycomb-weathered sandstone (Dundee Sandstone, Middle Pennsylvanian; cliffs along Walnut Creek Bottom Road, west of Dundee, Ohio, USA) 3
Honeycomb-weathered sandstone (Dundee Sandstone, Middle Pennsylvanian; cliffs along Walnut Creek Bottom Road, west of Dundee, Ohio, USA) 3
by James St. John

クリエイティブ・コモンズ 表示 2.1

Porphyritic metadolerite (Mynydd Preseli Dolerite Suite, Middle Ordovician; Preseli Hills, Wales, Britain) 1
Porphyritic metadolerite (Mynydd Preseli Dolerite Suite, Middle Ordovician; Preseli Hills, Wales, Britain) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

"Rockville White Granite" (porphyritic granite, Rockville Granite, late Paleoproterozoic, 1.73 to 1.78 Ga; quarry near Rockville, Minnesota, USA) 3
"Rockville White Granite" (porphyritic granite, Rockville Granite, late Paleoproterozoic, 1.73 to 1.78 Ga; quarry near Rockville, Minnesota, USA) 3
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) 3
Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; 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) 11
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 11
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) 19
Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 19
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) 3
Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 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 loose block at Ely visitor center, Ely, Minnesota, USA) 12
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large loose block at Ely visitor center, Ely, Minnesota, USA) 12
by James St. John

クリエイティブ・コモンズ 表示 2.1

Garnet schist (Late Cretaceous, 89-90 Ma; Garnet Ledge, about 12 km north of Wrangell, southeastern Alaska, USA) 3
Garnet schist (Late Cretaceous, 89-90 Ma; Garnet Ledge, about 12 km north of Wrangell, southeastern Alaska, USA) 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) 10
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 10
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) 9
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, 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) 14
Muscovitic-serpentinic marble (Precambrian; Black Hills Porcelain Clay and Marble Mining Company Quarry, Custer State Park, Black Hills, South Dakota, USA) 14
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) 12
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) 12
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) 25
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) 25
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) 40
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) 40
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) 21
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 21
by James St. John

クリエイティブ・コモンズ 表示 2.1

Nelsonite (Proterozoic; Port Leyden, western Adirondacks, New York State, USA) 1
Nelsonite (Proterozoic; Port Leyden, western Adirondacks, New York State, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

Garnet schist (Late Cretaceous, 89-90 Ma; Garnet Ledge, about 12 km north of Wrangell, southeastern Alaska, USA) 4
Garnet schist (Late Cretaceous, 89-90 Ma; Garnet Ledge, about 12 km north of Wrangell, southeastern Alaska, USA) 4
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 loose block at Ely visitor center, Ely, Minnesota, USA) 8
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large loose block at Ely visitor center, Ely, Minnesota, USA) 8
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) 6
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) 6
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) 26
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 26
by James St. John

クリエイティブ・コモンズ 表示 2.1


Verde Bamboo Granite (epidotic metasandstone) (Ipuçaba Formation, Mesoproterozoic, 1.6-1.7 Ga; Bahia, Brazil) 2
Verde Bamboo Granite (epidotic metasandstone) (Ipuçaba Formation, Mesoproterozoic, 1.6-1.7 Ga; Bahia, Brazil) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1

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



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