mafic

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Sulfidic bronzitite (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, USA) 3
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/30800357083.html" target="_blank"><img src="http://farm1.static.flickr.com/572/30800357083_14cf91e438_m.jpg" alt="" /></a><br />Sulfidic bronzitite (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, USA) 3 / James St. John</span>

サイズ変更など

Black Rock (Lower Pleistocene olivine orendite lamproite volcanic center in the Leucite Hills, Wyoming, USA) 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/19773649909.html" target="_blank"><img src="http://farm1.static.flickr.com/328/19773649909_530d5e4d11_m.jpg" alt="" /></a><br />Black Rock (Lower Pleistocene olivine orendite lamproite volcanic center in the Leucite Hills, Wyoming, USA) 2 / James St. John</span>

サイズ変更など

Volcanic bomb (basaltic andesite) (Upper Pleistocene, 71 ka; SP Crater cinder cone, Coconino County, Arizona, USA) 9
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/30991110630.html" target="_blank"><img src="http://farm6.static.flickr.com/5515/30991110630_e6e0b7736b_m.jpg" alt="" /></a><br />Volcanic bomb (basaltic andesite) (Upper Pleistocene, 71 ka; SP Crater cinder cone, Coconino County, Arizona, USA) 9 / James St. John</span>

サイズ変更など

Hornblende dacite (Quaternary; Lassen Peak, California, USA)
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/40770024104.html" target="_blank"><img src="http://farm1.static.flickr.com/803/40770024104_f6125fa57e_m.jpg" alt="" /></a><br />Hornblende dacite (Quaternary; Lassen Peak, California, USA) / James St. John</span>

サイズ変更など

Carbonatite (Gem Park Complex, Neoproterozoic or Cambrian; Gem Park, Fremont County, Colorado, USA) 4
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50709309062.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50709309062_e0d1f4e2e7_m.jpg" alt="" /></a><br />Carbonatite (Gem Park Complex, Neoproterozoic or Cambrian; Gem Park, Fremont County, Colorado, USA) 4 / James St. John</span>

サイズ変更など

Azul Bahia Granite (sodalite metasyenite, Itabuna Syenite Complex, Neoproterozoic, ~676 Ma; Fazenda Hiassu, Bahia State, Brazil) 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/33192767203.html" target="_blank"><img src="http://farm3.static.flickr.com/2860/33192767203_b7dd34c1cc_m.jpg" alt="" /></a><br />Azul Bahia Granite (sodalite metasyenite, Itabuna Syenite Complex, Neoproterozoic, ~676 Ma; Fazenda Hiassu, Bahia State, Brazil) 2 / James St. John</span>

サイズ変更など

Vesicular metakomatiite (serpentinized) (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; west-southwest of 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

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/40920560893.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/40920560893_29386a199e_m.jpg" alt="" /></a><br />Vesicular metakomatiite (serpentinized) (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; west-southwest of the Potter Mine, east of Timmins, Ontario, Canada) 6 / James St. John</span>

サイズ変更など

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

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/21428220426.html" target="_blank"><img src="http://farm1.static.flickr.com/724/21428220426_4d60d0c743_m.jpg" alt="" /></a><br />Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 1 / James St. John</span>

サイズ変更など

End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 6
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/23631016012.html" target="_blank"><img src="http://farm6.static.flickr.com/5807/23631016012_13b1fb3613_m.jpg" alt="" /></a><br />End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 6 / James St. John</span>

サイズ変更など

Bronzitic anorthosite (Stillwater Complex, Neoarchean, 2.71 Ga; mine core dump, Stillwater Mine, Beartooth Mountains, Montana, USA) 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/31406471795.html" target="_blank"><img src="http://farm6.static.flickr.com/5816/31406471795_5249156b4e_m.jpg" alt="" /></a><br />Bronzitic anorthosite (Stillwater Complex, Neoarchean, 2.71 Ga; mine core dump, Stillwater Mine, Beartooth Mountains, Montana, USA) 2 / James St. John</span>

サイズ変更など

Trachyte obsidian (Quaternary; Ol Doinyo Nyukie Volcano, Kenya) 1
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/14850016918.html" target="_blank"><img src="http://farm4.static.flickr.com/3858/14850016918_f90a7520e2_m.jpg" alt="" /></a><br />Trachyte obsidian (Quaternary; Ol Doinyo Nyukie Volcano, Kenya) 1 / James St. John</span>

サイズ変更など

"Luna Pearl Granite" (biotite leucogranite, Sardinian-Corsican Batholith, ~280-310 Ma, Late Pennsylvanian to Early Permian; Sardinia)
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/14618932389.html" target="_blank"><img src="http://farm4.static.flickr.com/3903/14618932389_666f77526f_m.jpg" alt="" /></a><br />"Luna Pearl Granite" (biotite leucogranite, Sardinian-Corsican Batholith, ~280-310 Ma, Late Pennsylvanian to Early Permian; Sardinia) / James St. John</span>

サイズ変更など

Mahogany obsidian (Tertiary, 5.03-7.7 Ma; Glass Buttes, Oregon, USA) 4
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/51525352809.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/51525352809_a844b19cb5_m.jpg" alt="" /></a><br />Mahogany obsidian (Tertiary, 5.03-7.7 Ma; Glass Buttes, Oregon, USA) 4 / James St. John</span>

サイズ変更など

Basalt 3
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48674276863.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48674276863_cd10b22b1b_m.jpg" alt="" /></a><br />Basalt 3 / James St. John</span>

サイズ変更など

Basalt 5
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48674275908.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48674275908_26462d886b_m.jpg" alt="" /></a><br />Basalt 5 / James St. John</span>

サイズ変更など

End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 3
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/23112747943.html" target="_blank"><img src="http://farm1.static.flickr.com/681/23112747943_d1c3b718ce_m.jpg" alt="" /></a><br />End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 3 / James St. John</span>

サイズ変更など

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

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/49939283076.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49939283076_0071cb47bc_m.jpg" alt="" /></a><br />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 / James St. John</span>

サイズ変更など

Fault pseudotachylite (Homestake Shear Zone, Mesoproterozoic, 1375-1386 Ma) in gneiss (Paleoproterozoic, 1630-1710 Ma; Homestake Creek Valley, Sawatch Range, Colorado, USA) 14
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/21150554173.html" target="_blank"><img src="http://farm6.static.flickr.com/5624/21150554173_1b8225f1bd_m.jpg" alt="" /></a><br />Fault pseudotachylite (Homestake Shear Zone, Mesoproterozoic, 1375-1386 Ma) in gneiss (Paleoproterozoic, 1630-1710 Ma; Homestake Creek Valley, Sawatch Range, Colorado, USA) 14 / James St. John</span>

サイズ変更など

End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 10
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/23657158511.html" target="_blank"><img src="http://farm1.static.flickr.com/761/23657158511_320f7ed85c_m.jpg" alt="" /></a><br />End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 10 / James St. John</span>

サイズ変更など

End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Bake Oven Pothole, Interstate State Park, Taylors Falls, Minnesota, USA) 1
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/23753621175.html" target="_blank"><img src="http://farm6.static.flickr.com/5759/23753621175_5d4ec1a222_m.jpg" alt="" /></a><br />End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Bake Oven Pothole, Interstate State Park, Taylors Falls, Minnesota, USA) 1 / James St. John</span>

サイズ変更など

Auriga Nunataks marble melange with mafic clasts 2
by euphro

クリエイティブ・コモンズ表示-継承 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/5866185654.html" target="_blank"><img src="http://farm6.static.flickr.com/5071/5866185654_540d814e15_m.jpg" alt="" /></a><br />Auriga Nunataks marble melange with mafic clasts 2 / euphro</span>

サイズ変更など

"Sapphire Brown Granite" (porphyritic granite, Andhra Pradesh State, southern India)
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/14618840880.html" target="_blank"><img src="http://farm6.static.flickr.com/5596/14618840880_8c65707b42_m.jpg" alt="" /></a><br />"Sapphire Brown Granite" (porphyritic granite, Andhra Pradesh State, southern India) / James St. John</span>

サイズ変更など

High-FeTi diabase dike (Duluth Complex, Mesoproterozoic, 1099 Ma; Twin Lakes East Skyline Parkway roadcut, Duluth, Minnesota, USA) 7
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/22291843141.html" target="_blank"><img src="http://farm1.static.flickr.com/694/22291843141_ed20f23904_m.jpg" alt="" /></a><br />High-FeTi diabase dike (Duluth Complex, Mesoproterozoic, 1099 Ma; Twin Lakes East Skyline Parkway roadcut, Duluth, Minnesota, USA) 7 / James St. John</span>

サイズ変更など

Basalt 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48674616636.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48674616636_a89b9e1a55_m.jpg" alt="" /></a><br />Basalt 2 / James St. John</span>

サイズ変更など

End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/23713438516.html" target="_blank"><img src="http://farm6.static.flickr.com/5820/23713438516_c4f38400da_m.jpg" alt="" /></a><br />End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 2 / James St. John</span>

サイズ変更など

Snowflake obsidian 10
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/52812581666.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52812581666_bd6f7f07f3_m.jpg" alt="" /></a><br />Snowflake obsidian 10 / James St. John</span>

サイズ変更など

Olivine diabase (Lafayette Bluff Sill, Proterozoic; Lafayette Bluff Tunnel, northeastern Minnesota, USA) 11
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/23316431125.html" target="_blank"><img src="http://farm6.static.flickr.com/5760/23316431125_3a75a8b1e2_m.jpg" alt="" /></a><br />Olivine diabase (Lafayette Bluff Sill, Proterozoic; Lafayette Bluff Tunnel, northeastern Minnesota, USA) 11 / James St. John</span>

サイズ変更など

Tholeiitic basalts (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 8
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/23707446946.html" target="_blank"><img src="http://farm6.static.flickr.com/5770/23707446946_5a761aa44f_m.jpg" alt="" /></a><br />Tholeiitic basalts (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 8 / James St. John</span>

サイズ変更など

"Alaskan White Granite" (porphyritic garnetiferous leucogranite, Fazenda Memoria Stock, Middle Ordovician; Fazenda Memoria, Ceara State, Brazil)
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/14825425293.html" target="_blank"><img src="http://farm3.static.flickr.com/2910/14825425293_bae78018dd_m.jpg" alt="" /></a><br />"Alaskan White Granite" (porphyritic garnetiferous leucogranite, Fazenda Memoria Stock, Middle Ordovician; Fazenda Memoria, Ceara State, Brazil) / James St. John</span>

サイズ変更など

Obsidian 31
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/51480639198.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/51480639198_40a00b3457_m.jpg" alt="" /></a><br />Obsidian 31 / James St. John</span>

サイズ変更など

Black Pearl Granite (gabbro) (Proterozoic; Guntur District, Andhra Pradesh State, India)
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/14826833453.html" target="_blank"><img src="http://farm4.static.flickr.com/3872/14826833453_8e1b5b3fa8_m.jpg" alt="" /></a><br />Black Pearl Granite (gabbro) (Proterozoic; Guntur District, Andhra Pradesh State, India) / James St. John</span>

サイズ変更など

Anorthositic gabbro decorative stone 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/26921876797.html" target="_blank"><img src="http://farm1.static.flickr.com/971/26921876797_276435ebf7_m.jpg" alt="" /></a><br />Anorthositic gabbro decorative stone 2 / James St. John</span>

サイズ変更など

Basalt 4
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48674276788.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48674276788_3c3238161c_m.jpg" alt="" /></a><br />Basalt 4 / James St. John</span>

サイズ変更など

Ophitic olivine diabase (Beaver River Diabase, Beaver Bay Complex, Mesoproterozoic, ~1096 Ma; Split Rock Lighthouse, Minnesota, USA) 1
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/22431326783.html" target="_blank"><img src="http://farm1.static.flickr.com/752/22431326783_0181100bc2_m.jpg" alt="" /></a><br />Ophitic olivine diabase (Beaver River Diabase, Beaver Bay Complex, Mesoproterozoic, ~1096 Ma; Split Rock Lighthouse, Minnesota, USA) 1 / James St. John</span>

サイズ変更など

Layered gabbros (troctolitic series, Duluth Complex, Mesoproterozoic, 1099 Ma; Thomson Hill Information Center Outcrop, Skyline Parkway, Duluth, Minnesota, USA) 5
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/21641457445.html" target="_blank"><img src="http://farm1.static.flickr.com/696/21641457445_63c3bbd93c_m.jpg" alt="" /></a><br />Layered gabbros (troctolitic series, Duluth Complex, Mesoproterozoic, 1099 Ma; Thomson Hill Information Center Outcrop, Skyline Parkway, Duluth, Minnesota, USA) 5 / James St. John</span>

サイズ変更など

Massive Pt-Pd-rich sulfide (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, USA) 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50865589951.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50865589951_59c10c49ac_m.jpg" alt="" /></a><br />Massive Pt-Pd-rich sulfide (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, USA) 2 / James St. John</span>

サイズ変更など

China Impala Granite (quartz diorite) (near Changle, Fujian, China) 5
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/41773958992.html" target="_blank"><img src="http://farm1.static.flickr.com/968/41773958992_80de222e50_m.jpg" alt="" /></a><br />China Impala Granite (quartz diorite) (near Changle, Fujian, China) 5 / James St. John</span>

サイズ変更など

Nelsonite (Laramie Anorthosite Complex, Mesoproterozoic, 1.43 Ga; Sybille Pit, Laramie Range, Wyoming, USA) 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50501248397.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50501248397_994f28bdd0_m.jpg" alt="" /></a><br />Nelsonite (Laramie Anorthosite Complex, Mesoproterozoic, 1.43 Ga; Sybille Pit, Laramie Range, Wyoming, USA) 2 / James St. John</span>

サイズ変更など

Amazon Gold Granite (graphic granite) (Brazil) 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/35003407165.html" target="_blank"><img src="http://farm5.static.flickr.com/4221/35003407165_86b4b0e227_m.jpg" alt="" /></a><br />Amazon Gold Granite (graphic granite) (Brazil) 2 / James St. John</span>

サイズ変更など

Andesite
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/8455600595.html" target="_blank"><img src="http://farm9.static.flickr.com/8506/8455600595_fa04431e52_m.jpg" alt="" /></a><br />Andesite / James St. John</span>

サイズ変更など

Basalt 6
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48674790187.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48674790187_ac3a421144_m.jpg" alt="" /></a><br />Basalt 6 / James St. John</span>

サイズ変更など

Talcite (talcose rock) (Allamoore Formation, Mesoproterozoic, 1.25 Ga; Bridges Talc Mine, Trans-Pecos Mountains, Texas, USA)
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/15068551025.html" target="_blank"><img src="http://farm6.static.flickr.com/5594/15068551025_3a1287c90e_m.jpg" alt="" /></a><br />Talcite (talcose rock) (Allamoore Formation, Mesoproterozoic, 1.25 Ga; Bridges Talc Mine, Trans-Pecos Mountains, Texas, USA) / James St. John</span>

サイズ変更など

Obsidian 23
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/49056411638.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49056411638_c4aece59cc_m.jpg" alt="" /></a><br />Obsidian 23 / James St. John</span>

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End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 9
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/23630995372.html" target="_blank"><img src="http://farm6.static.flickr.com/5801/23630995372_909f722ae2_m.jpg" alt="" /></a><br />End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 9 / James St. John</span>

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Massive Pt-Pd-rich sulfide (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, USA) 3
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50865589646.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50865589646_4a43e5700f_m.jpg" alt="" /></a><br />Massive Pt-Pd-rich sulfide (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, USA) 3 / James St. John</span>

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Lassen Volcano (~29 ka dacitic volcanic dome) (Lassen Volcanic National Park, California, USA) 21
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/37562486471.html" target="_blank"><img src="http://farm5.static.flickr.com/4485/37562486471_4386b332c8_m.jpg" alt="" /></a><br />Lassen Volcano (~29 ka dacitic volcanic dome) (Lassen Volcanic National Park, California, USA) 21 / James St. John</span>

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Diabase dike (ophitic olivine tholeiite) (right) intruding gabbroic anorthosite to anorthositic gabbro (left) (anorthosite series, Duluth Complex, Mesoproterozoic, 1099 Ma; Merritt Creek West Skyline Parkway roadcut, Duluth, Minnesota, USA) 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/22262123845.html" target="_blank"><img src="http://farm6.static.flickr.com/5783/22262123845_b1d4f81408_m.jpg" alt="" /></a><br />Diabase dike (ophitic olivine tholeiite) (right) intruding gabbroic anorthosite to anorthositic gabbro (left) (anorthosite series, Duluth Complex, Mesoproterozoic, 1099 Ma; Merritt Creek West Skyline Parkway roadcut, Duluth, Minnesota, USA) 2 / James St. John</span>

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Obsidian 40
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/51480639018.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/51480639018_da5ed355ff_m.jpg" alt="" /></a><br />Obsidian 40 / James St. John</span>

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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

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/21442545092.html" target="_blank"><img src="http://farm1.static.flickr.com/715/21442545092_16e4d44346_m.jpg" alt="" /></a><br />Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large loose block at Ely visitor center, Ely, Minnesota, USA) 4 / James St. John</span>

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Spherulitic magnetite (Rudnogorsk Deposit, Angara-Ilim Iron Ore District, Irkutsk Region, Siberia, Russia) 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50874195598.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50874195598_2e13327f00_m.jpg" alt="" /></a><br />Spherulitic magnetite (Rudnogorsk Deposit, Angara-Ilim Iron Ore District, Irkutsk Region, Siberia, Russia) 2 / James St. John</span>

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Fluorite vein (Cripple Creek Diatreme, Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 1
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/49229109196.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49229109196_34d50a78ed_m.jpg" alt="" /></a><br />Fluorite vein (Cripple Creek Diatreme, Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 1 / James St. John</span>

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Porphyritic diabase (Cape Ann, Massachusetts, USA) 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/51621291165.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/51621291165_72ccbdd4f7_m.jpg" alt="" /></a><br />Porphyritic diabase (Cape Ann, Massachusetts, USA) 2 / James St. John</span>

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Obsidian (Tertiary, 5.03-7.7 Ma; Glass Butte, Oregon, USA) 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/39675831210.html" target="_blank"><img src="http://farm1.static.flickr.com/807/39675831210_11e4f7f230_m.jpg" alt="" /></a><br />Obsidian (Tertiary, 5.03-7.7 Ma; Glass Butte, Oregon, USA) 2 / James St. John</span>

サイズ変更など

Basalt 13
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48674789992.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48674789992_97fff86090_m.jpg" alt="" /></a><br />Basalt 13 / James St. John</span>

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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

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/49939289226.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49939289226_6e1449b887_m.jpg" alt="" /></a><br />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 / James St. John</span>

サイズ変更など

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

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/49939287326.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49939287326_c74d5cec47_m.jpg" alt="" /></a><br />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 / James St. John</span>

サイズ変更など

Spider web obsidian 5
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/54024188045.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/54024188045_dd4e7184bc_m.jpg" alt="" /></a><br />Spider web obsidian 5 / James St. John</span>

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Vesicular olivine orendite lamproite lava (Lower Pleistocene, 1.30 to 1.37 Ma; Black Rock, eastern Leucite Hills Volcanic Province, northeast of the town of Superior, southwestern Wyoming, USA) 1
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/15040918023.html" target="_blank"><img src="http://farm6.static.flickr.com/5603/15040918023_7f9438a5d1_m.jpg" alt="" /></a><br />Vesicular olivine orendite lamproite lava (Lower Pleistocene, 1.30 to 1.37 Ma; Black Rock, eastern Leucite Hills Volcanic Province, northeast of the town of Superior, southwestern Wyoming, USA) 1 / James St. John</span>

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Black Cambrian Granite (norite) (Lac-St.-Jean Anorthosite Suite, 1.14-1.16 Ga, Mesoproterozoic; St. Nazaire, Quebec, Canada)
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/14806650792.html" target="_blank"><img src="http://farm3.static.flickr.com/2939/14806650792_ae0e482c63_m.jpg" alt="" /></a><br />Black Cambrian Granite (norite) (Lac-St.-Jean Anorthosite Suite, 1.14-1.16 Ga, Mesoproterozoic; St. Nazaire, Quebec, Canada) / James St. John</span>

サイズ変更など

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/46970872165.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/46970872165_4da3a24084_m.jpg" alt="" /></a><br />Vesicular metakomatiite (serpentinized) (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; west-southwest of the Potter Mine, east of Timmins, Ontario, Canada) 2 / James St. John</span>

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