magma

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L-tectonite 2
by James St. John

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/16941432045.html" target="_blank"><img src="http://farm9.static.flickr.com/8736/16941432045_efefc45c6b_m.jpg" alt="" /></a><br />L-tectonite 2 / James St. John</span>

サイズ変更など

Octahedrite (Sericho Meteorite) (Kenya) 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/48164437972.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48164437972_b386154ba5_m.jpg" alt="" /></a><br />Octahedrite (Sericho Meteorite) (Kenya) 2 / James St. John</span>

サイズ変更など

Olivine diabase (Lafayette Bluff Sill, Proterozoic; Lafayette Bluff Tunnel, northeastern 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/23020693520.html" target="_blank"><img src="http://farm1.static.flickr.com/692/23020693520_6a76bcfeb4_m.jpg" alt="" /></a><br />Olivine diabase (Lafayette Bluff Sill, Proterozoic; Lafayette Bluff Tunnel, northeastern Minnesota, USA) 4 / James St. John</span>

サイズ変更など

Olivine diabase (Lafayette Bluff Sill, Proterozoic; Lafayette Bluff Tunnel, northeastern 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/23208078982.html" target="_blank"><img src="http://farm6.static.flickr.com/5793/23208078982_a28f01be7d_m.jpg" alt="" /></a><br />Olivine diabase (Lafayette Bluff Sill, Proterozoic; Lafayette Bluff Tunnel, northeastern Minnesota, USA) 5 / James St. John</span>

サイズ変更など

Serpentinite (Paleozoic; Vermont Verde Antique International Quarry, northeast of Rochester, Vermont, USA) 18
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/49654543227.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49654543227_331e2cffd1_m.jpg" alt="" /></a><br />Serpentinite (Paleozoic; Vermont Verde Antique International Quarry, northeast of Rochester, Vermont, USA) 18 / James St. John</span>

サイズ変更など

Granodiorite (Giant Forest Granodiorite, mid-Cretaceous, 97-102 Ma; Moro Rock, Sequoia National Park, California, 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/16592282717.html" target="_blank"><img src="http://farm8.static.flickr.com/7628/16592282717_5552317914_m.jpg" alt="" /></a><br />Granodiorite (Giant Forest Granodiorite, mid-Cretaceous, 97-102 Ma; Moro Rock, Sequoia National Park, California, USA) 5 / James St. John</span>

サイズ変更など

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

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/49072454968.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49072454968_8f825f1854_m.jpg" alt="" /></a><br />Garnet schist (Late Cretaceous, 89-90 Ma; Garnet Ledge, about 12 km north of Wrangell, southeastern Alaska, USA) 10 / 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

Snowflake obsidian 17
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/52825841556.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52825841556_9d2c52f371_m.jpg" alt="" /></a><br />Snowflake obsidian 17 / James St. John</span>

サイズ変更など

Bronzite pyroxene (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/50864524962.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50864524962_f1fdd1f05f_m.jpg" alt="" /></a><br />Bronzite pyroxene (Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, USA) 2 / James St. John</span>

サイズ変更など

Golden Gate
by Fermion

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/3700512703.html" target="_blank"><img src="http://farm4.static.flickr.com/3623/3700512703_a0db7348d4_m.jpg" alt="" /></a><br />Golden Gate / Fermion</span>

サイズ変更など

Novaculite (= variably microporous metachert) (Arkansas Novaculite, Devonian-Mississippian; Hot Springs Mountain Anticline, ZigZag Mountains, Arkansas, 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/15258251444.html" target="_blank"><img src="http://farm9.static.flickr.com/8682/15258251444_665381dcd8_m.jpg" alt="" /></a><br />Novaculite (= variably microporous metachert) (Arkansas Novaculite, Devonian-Mississippian; Hot Springs Mountain Anticline, ZigZag Mountains, Arkansas, USA) / James St. John</span>

サイズ変更など

Octahedrite (Casas Grandes Meteorite)
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/5868072306.html" target="_blank"><img src="http://farm4.static.flickr.com/3229/5868072306_64487f408d_m.jpg" alt="" /></a><br />Octahedrite (Casas Grandes Meteorite) / James St. John</span>

サイズ変更など

Kīlauea Iki, Hawaiʻi Volcanoes National Park, Hawaii
by Ken Lund

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/4528797895.html" target="_blank"><img src="http://farm5.static.flickr.com/4048/4528797895_fc5e704ccd_m.jpg" alt="" /></a><br />Kīlauea Iki, Hawaiʻi Volcanoes National Park, Hawaii / Ken Lund</span>

サイズ変更など

Obsidian (Tertiary, 5.03-7.7 Ma; Glass Butte, Oregon, 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/41442120232.html" target="_blank"><img src="http://farm1.static.flickr.com/793/41442120232_7829e5af58_m.jpg" alt="" /></a><br />Obsidian (Tertiary, 5.03-7.7 Ma; Glass Butte, Oregon, USA) 1 / James St. John</span>

サイズ変更など

Elbaite (Oxford Pegmatite Field; Havey Quarry, near East Poland, Maine, 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/42778089674.html" target="_blank"><img src="http://farm2.static.flickr.com/1823/42778089674_a925a1235d_m.jpg" alt="" /></a><br />Elbaite (Oxford Pegmatite Field; Havey Quarry, near East Poland, Maine, USA) / James St. John</span>

サイズ変更など

Octahedrite (Seymchan Meteorite) (Magadan District, Russia) 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/46120600504.html" target="_blank"><img src="http://farm5.static.flickr.com/4864/46120600504_797b16bf80_m.jpg" alt="" /></a><br />Octahedrite (Seymchan Meteorite) (Magadan District, Russia) 9 / James St. John</span>

サイズ変更など

Obsidian 19
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/49056412553.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49056412553_88f7d18610_m.jpg" alt="" /></a><br />Obsidian 19 / James St. John</span>

サイズ変更など

Sulfidic anorthosite (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, 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/50425146811.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50425146811_4f1c26281a_m.jpg" alt="" /></a><br />Sulfidic anorthosite (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, USA) 14 / James St. John</span>

サイズ変更など

Pegmatitic feldspathic orthopyroxenite (Merensky Reef, Bushveld Complex, mid-Paleoproterozoic, 2.054-2.055 Ga; Rustenburg Platinum Mine, northeastern South Africa)
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/15179304120.html" target="_blank"><img src="http://farm4.static.flickr.com/3918/15179304120_234efee326_m.jpg" alt="" /></a><br />Pegmatitic feldspathic orthopyroxenite (Merensky Reef, Bushveld Complex, mid-Paleoproterozoic, 2.054-2.055 Ga; Rustenburg Platinum Mine, northeastern South Africa) / James St. John</span>

サイズ変更など

Xenolith in granodiorite (Giant Forest Granodiorite, mid-Cretaceous, 97-102 Ma; Moro Rock, Sequoia National Park, California, 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/16592299327.html" target="_blank"><img src="http://farm9.static.flickr.com/8568/16592299327_5792a30830_m.jpg" alt="" /></a><br />Xenolith in granodiorite (Giant Forest Granodiorite, mid-Cretaceous, 97-102 Ma; Moro Rock, Sequoia National Park, California, USA) 7 / James St. John</span>

サイズ変更など

North Menan Butte
by BLMIdaho

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/35390640886.html" target="_blank"><img src="http://farm5.static.flickr.com/4212/35390640886_85d534b9d0_m.jpg" alt="" /></a><br />North Menan Butte / BLMIdaho</span>

サイズ変更など

Octahedrite (Sericho Meteorite) (Kenya) 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/48164410112.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48164410112_8d08e34f59_m.jpg" alt="" /></a><br />Octahedrite (Sericho Meteorite) (Kenya) 7 / James St. John</span>

サイズ変更など

Metaconglomerate ("Marinace Green Granite") (Precambrian; Bahia State, eastern 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/16807715227.html" target="_blank"><img src="http://farm9.static.flickr.com/8691/16807715227_99bf62207e_m.jpg" alt="" /></a><br />Metaconglomerate ("Marinace Green Granite") (Precambrian; Bahia State, eastern Brazil) / James St. John</span>

サイズ変更など

Genesis G80 Magma Concept (2024)
by usf1fan2

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/53625895641.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/53625895641_00f4321a0f_m.jpg" alt="" /></a><br />Genesis G80 Magma Concept (2024) / usf1fan2</span>

サイズ変更など

Octahedrite (Seymchan Meteorite) (Magadan District, Russia) 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/46120599764.html" target="_blank"><img src="http://farm5.static.flickr.com/4845/46120599764_ea74c1ef31_m.jpg" alt="" /></a><br />Octahedrite (Seymchan Meteorite) (Magadan District, Russia) 6 / James St. John</span>

サイズ変更など

Platinum-palladium ore (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, 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/49952578081.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49952578081_e3b6692ab4_m.jpg" alt="" /></a><br />Platinum-palladium ore (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, USA) 4 / James St. John</span>

サイズ変更など

Hawaii
by Marianne Serra

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/31170403410.html" target="_blank"><img src="http://farm1.static.flickr.com/139/31170403410_110d8da984_m.jpg" alt="" /></a><br />Hawaii / Marianne Serra</span>

サイズ変更など

Moro Rock exfoliation dome (Giant Forest Granodiorite, mid-Cretaceous, 97-102 Ma; Sequoia National Park, California, 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/16177218124.html" target="_blank"><img src="http://farm8.static.flickr.com/7638/16177218124_38fa6c6fde_m.jpg" alt="" /></a><br />Moro Rock exfoliation dome (Giant Forest Granodiorite, mid-Cretaceous, 97-102 Ma; Sequoia National Park, California, USA) 8 / James St. John</span>

サイズ変更など

Sulfidic anorthosite (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, USA) 15
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/50425146761.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50425146761_15594d9b02_m.jpg" alt="" /></a><br />Sulfidic anorthosite (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, USA) 15 / 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) 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/50501080721.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50501080721_bda0f8e26f_m.jpg" alt="" /></a><br />Nelsonite (Laramie Anorthosite Complex, Mesoproterozoic, 1.43 Ga; Sybille Pit, Laramie Range, Wyoming, USA) 7 / James St. John</span>

サイズ変更など

Large potassium feldspar & quartz crystals in pegmatitic granite (Ruggles Pegmatite, Devonian; Ruggles Pegmatite Mine, New Hampshire, 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/37145900621.html" target="_blank"><img src="http://farm5.static.flickr.com/4401/37145900621_669f7e8ca4_m.jpg" alt="" /></a><br />Large potassium feldspar & quartz crystals in pegmatitic granite (Ruggles Pegmatite, Devonian; Ruggles Pegmatite Mine, New Hampshire, USA) 2 / James St. John</span>

サイズ変更など

Fountain Paintpots (8 July 2014) 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/15320934841.html" target="_blank"><img src="http://farm4.static.flickr.com/3842/15320934841_5ba32550c3_m.jpg" alt="" /></a><br />Fountain Paintpots (8 July 2014) 4 / James St. John</span>

サイズ変更など

Chain of Craters WSA
by mypubliclands

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/9441287967.html" target="_blank"><img src="http://farm6.static.flickr.com/5330/9441287967_a91ecb8e5f_m.jpg" alt="" /></a><br />Chain of Craters WSA / mypubliclands</span>

サイズ変更など

Obsidian 27
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/49057143062.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49057143062_d63c7810ed_m.jpg" alt="" /></a><br />Obsidian 27 / James St. John</span>

サイズ変更など

Peperite (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.719 Ga; just southwest of 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

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/40920395683.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/40920395683_eb699aa1e5_m.jpg" alt="" /></a><br />Peperite (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.719 Ga; just southwest of the Potter Mine, east of Timmins, Ontario, Canada) 4 / James St. John</span>

サイズ変更など

Fountain Paint Pots (14 August 2010) 59
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/12225592035.html" target="_blank"><img src="http://farm3.static.flickr.com/2894/12225592035_fcc32df4bb_m.jpg" alt="" /></a><br />Fountain Paint Pots (14 August 2010) 59 / James St. John</span>

サイズ変更など

Chain of Craters WSA
by mypubliclands

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/9441263099.html" target="_blank"><img src="http://farm8.static.flickr.com/7350/9441263099_a84883bdae_m.jpg" alt="" /></a><br />Chain of Craters WSA / mypubliclands</span>

サイズ変更など

Grand Prismatic Spring
by U.S. Geological Survey

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/14157663008.html" target="_blank"><img src="http://farm4.static.flickr.com/3881/14157663008_f3f09654a9_m.jpg" alt="" /></a><br />Grand Prismatic Spring / U.S. Geological Survey</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) 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/31370235316.html" target="_blank"><img src="http://farm6.static.flickr.com/5777/31370235316_bf436e3d75_m.jpg" alt="" /></a><br />Bronzitic anorthosite (Stillwater Complex, Neoarchean, 2.71 Ga; mine core dump, Stillwater Mine, Beartooth Mountains, Montana, USA) 1 / James St. John</span>

サイズ変更など

Genesis G80 Magma Concept (2024)
by usf1fan2

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/53626221394.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/53626221394_2ed04cdb19_m.jpg" alt="" /></a><br />Genesis G80 Magma Concept (2024) / usf1fan2</span>

サイズ変更など

Mauna Loa Interpretive Display, Thomas A. Jaggar Museum, Hawaiʻi Volcanoes National Park, Hawaii
by Ken Lund

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/4528726273.html" target="_blank"><img src="http://farm5.static.flickr.com/4055/4528726273_bce30ff058_m.jpg" alt="" /></a><br />Mauna Loa Interpretive Display, Thomas A. Jaggar Museum, Hawaiʻi Volcanoes National Park, Hawaii / Ken Lund</span>

サイズ変更など

Olivine diabase (Lafayette Bluff Sill, Proterozoic; Lafayette Bluff Tunnel, northeastern 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/22689369933.html" target="_blank"><img src="http://farm1.static.flickr.com/568/22689369933_c9b305f5fb_m.jpg" alt="" /></a><br />Olivine diabase (Lafayette Bluff Sill, Proterozoic; Lafayette Bluff Tunnel, northeastern Minnesota, USA) 6 / James St. John</span>

サイズ変更など

Molten Magma now cool on Carey Tor
by Piktour | Neville Wootton

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/51091125384.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/51091125384_b48667ca7c_m.jpg" alt="" /></a><br />Molten Magma now cool on Carey Tor / Piktour | Neville Wootton</span>

サイズ変更など

Magnetite skarn (Black Hawk Ore Body, Early Miocene, 22-23 Ma; Black Hawk Pit, Iron Mountain, Utah, 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/51856419062.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/51856419062_7b45834b27_m.jpg" alt="" /></a><br />Magnetite skarn (Black Hawk Ore Body, Early Miocene, 22-23 Ma; Black Hawk Pit, Iron Mountain, Utah, USA) 4 / James St. John</span>

サイズ変更など

Gold ore (auriferous altered rhyolite) (Golden Wonder Vein, Late Oligocene, 27.5 Ma; Golden Wonder Mine, San Juan Mountains, Colorado, 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/40118421311.html" target="_blank"><img src="http://farm5.static.flickr.com/4671/40118421311_dc3a0c9afb_m.jpg" alt="" /></a><br />Gold ore (auriferous altered rhyolite) (Golden Wonder Vein, Late Oligocene, 27.5 Ma; Golden Wonder Mine, San Juan Mountains, Colorado, USA) 3 / James St. John</span>

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Andesite (Larch Mountain Andesite, Lower Pleistocene, 1.43 Ma; Larch Mountain Shield Volcano, Boring Volcanic Field, 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/26128456130.html" target="_blank"><img src="http://farm2.static.flickr.com/1490/26128456130_a90c893ccb_m.jpg" alt="" /></a><br />Andesite (Larch Mountain Andesite, Lower Pleistocene, 1.43 Ma; Larch Mountain Shield Volcano, Boring Volcanic Field, Oregon, USA) 2 / James St. John</span>

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Moonstone (iridescent peristerite-oligoclase feldspar) (Chupa Pegmatite Field, Mesoproterozoic, 1.75 to 2.10 Ga; at or near Chupa Bay, Karelia, Russia) 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/14936936578.html" target="_blank"><img src="http://farm4.static.flickr.com/3835/14936936578_1d116c0a8e_m.jpg" alt="" /></a><br />Moonstone (iridescent peristerite-oligoclase feldspar) (Chupa Pegmatite Field, Mesoproterozoic, 1.75 to 2.10 Ga; at or near Chupa Bay, Karelia, Russia) 1 / James St. John</span>

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Spatter cone erupting basalt lava (7 May 2021) (Geldingadalur Valley, Iceland) 18 - pause & restart
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/51162646587.html" target="_blank"><img src="http://farm0.static.flickr.com/0/51162646587_10648acc07_m.jpg" alt="" /></a><br />Spatter cone erupting basalt lava (7 May 2021) (Geldingadalur Valley, Iceland) 18 - pause & restart / James St. John</span>

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Large bronzite crystal in 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/31370224786.html" target="_blank"><img src="http://farm6.static.flickr.com/5826/31370224786_10f14fd4b5_m.jpg" alt="" /></a><br />Large bronzite crystal in bronzitic anorthosite (Stillwater Complex, Neoarchean, 2.71 Ga; mine core dump, Stillwater Mine, Beartooth Mountains, Montana, USA) 2 / James St. John</span>

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Partial collapses of active spatter cone volcanoes (2-4 April 2021) (Geldingadalur Valley, Iceland)
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/51094878202.html" target="_blank"><img src="http://farm0.static.flickr.com/0/51094878202_12d5d4b5c4_m.jpg" alt="" /></a><br />Partial collapses of active spatter cone volcanoes (2-4 April 2021) (Geldingadalur Valley, Iceland) / James St. John</span>

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Octahedrite (Weekeroo Station Meteorite)
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/5868072454.html" target="_blank"><img src="http://farm4.static.flickr.com/3091/5868072454_d9f32086f5_m.jpg" alt="" /></a><br />Octahedrite (Weekeroo Station Meteorite) / James St. John</span>

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Muscovite schist (Paleoproterozoic; Black Hills, South Dakota, 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/32314444666.html" target="_blank"><img src="http://farm1.static.flickr.com/579/32314444666_3a3f01b2f7_m.jpg" alt="" /></a><br />Muscovite schist (Paleoproterozoic; Black Hills, South Dakota, USA) 4 / James St. John</span>

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Sulfidic norite (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, 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/50823896951.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50823896951_7dcb94fdc8_m.jpg" alt="" /></a><br />Sulfidic norite (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga;  Stillwater Mine, Beartooth Mountains, Montana, USA) 6 / James St. John</span>

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Obsidian 17
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/49056411208.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49056411208_9e01e0ab03_m.jpg" alt="" /></a><br />Obsidian 17 / James St. John</span>

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Gneiss (Joshimath Formation, Proterozoic; outcrop at Joshimath, Uttarakhand State, Indian Himalayas) 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/26708311852.html" target="_blank"><img src="http://farm8.static.flickr.com/7126/26708311852_38d1e73fff_m.jpg" alt="" /></a><br />Gneiss (Joshimath Formation, Proterozoic; outcrop at Joshimath, Uttarakhand State, Indian Himalayas) 5 / James St. John</span>

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Octahedrite (Sericho Meteorite) (Kenya) 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/48164337831.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48164337831_18abcf6bf4_m.jpg" alt="" /></a><br />Octahedrite (Sericho Meteorite) (Kenya) 6 / James St. John</span>

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Serpentinite (Greenville, Plumas County, 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/41246357724.html" target="_blank"><img src="http://farm1.static.flickr.com/969/41246357724_c065bda99d_m.jpg" alt="" /></a><br />Serpentinite (Greenville, Plumas County, California, USA) / James St. John</span>

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Fountain Paint Pots (14 August 2010) 61
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/12225590135.html" target="_blank"><img src="http://farm8.static.flickr.com/7365/12225590135_29092b8dd0_m.jpg" alt="" /></a><br />Fountain Paint Pots (14 August 2010) 61 / James St. John</span>

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Olivine diabase (Lafayette Bluff Sill, Proterozoic; Lafayette Bluff Tunnel, northeastern 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/22948540709.html" target="_blank"><img src="http://farm1.static.flickr.com/585/22948540709_208b88a559_m.jpg" alt="" /></a><br />Olivine diabase (Lafayette Bluff Sill, Proterozoic; Lafayette Bluff Tunnel, northeastern Minnesota, USA) 10 / James St. John</span>

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