pyroxene

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Basalt (Newark Supergroup, Lower Jurassic; Somerset County, New Jersey, USA) 12
by James St. John

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/52686914690.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52686914690_23b92f5dca_m.jpg" alt="" /></a><br />Basalt (Newark Supergroup, Lower Jurassic; Somerset County, New Jersey, USA) 12 / James St. John</span>

サイズ変更など

Chromian diopside (Almklovdalen Peridotite, Precambrian; Gusdal Olivine Pit, near Åheim, Norway) 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/50622662047.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50622662047_817c8b96ce_m.jpg" alt="" /></a><br />Chromian diopside (Almklovdalen Peridotite, Precambrian; Gusdal Olivine Pit, near Åheim, Norway) 2 / James St. John</span>

サイズ変更など

Porphyritic shoshonite (Denver Formation, 63-64 Ma, Lower Paleocene; Table Mountain, Golden, 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/52772372317.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52772372317_df8e4864f7_m.jpg" alt="" /></a><br />Porphyritic shoshonite (Denver Formation, 63-64 Ma, Lower Paleocene; Table Mountain, Golden, Colorado, USA) 3 / James St. John</span>

サイズ変更など

Madupite lamproite (Late Pliocene, 3 Ma; Pilot Butte volcanic center, Leucite Hills, Wyoming, 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/48931170073.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48931170073_4592a7167b_m.jpg" alt="" /></a><br />Madupite lamproite (Late Pliocene, 3 Ma; Pilot Butte volcanic center, Leucite Hills, Wyoming, USA) 6 / James St. John</span>

サイズ変更など

Anorthosite (Lac St. Jean Anorthosite Complex, Mesoproterozoic, 1140-1157 Ma; Lake St-Jean, Quebec, 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/50420925293.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50420925293_0936e9302c_m.jpg" alt="" /></a><br />Anorthosite (Lac St. Jean Anorthosite Complex, Mesoproterozoic, 1140-1157 Ma; Lake St-Jean, Quebec, Canada) 4 / James St. John</span>

サイズ変更など

Aphyric & partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, 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/46809775731.html" target="_blank"><img src="http://farm8.static.flickr.com/7902/46809775731_d5899c652b_m.jpg" alt="" /></a><br />Aphyric & partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 5 / James St. John</span>

サイズ変更など

Gabbro & diorite & granite dikes (Devonian; Hulls Cove, Mt. Desert Island, Maine, 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/50592162838.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50592162838_0b7aba67f3_m.jpg" alt="" /></a><br />Gabbro & diorite & granite dikes (Devonian; Hulls Cove, Mt. Desert Island, Maine, USA) 5 / James St. John</span>

サイズ変更など

Sedimentary xenolith in madupite lamproite (Late Pliocene, 3 Ma; Pilot Butte volcanic center, Leucite Hills, Wyoming, 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/48931195028.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48931195028_7ccddc2b5d_m.jpg" alt="" /></a><br />Sedimentary xenolith in madupite lamproite (Late Pliocene, 3 Ma; Pilot Butte volcanic center, Leucite Hills, Wyoming, USA) 3 / James St. John</span>

サイズ変更など

Columnar-jointed orendite lamproite lava (Pleistocene, 1.30-1.37 Ma; Black Rock volcanic center, Leucite Hills, 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/48971897668.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48971897668_2dfd03b8cd_m.jpg" alt="" /></a><br />Columnar-jointed orendite lamproite lava (Pleistocene, 1.30-1.37 Ma; Black Rock volcanic center, Leucite Hills, Wyoming, USA) 1 / James St. John</span>

サイズ変更など

Anorthosite with labradorite (Wiborg Batholith, 1633 Ma; Kymi Province, Finland) 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/50420541077.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50420541077_097e7c2c4e_m.jpg" alt="" /></a><br />Anorthosite with labradorite (Wiborg Batholith, 1633 Ma; Kymi Province, Finland) 3 / James St. John</span>

サイズ変更など

Monchiquite lamprophyre dike (Precambrian; Michipicoten River Bridge South roadcut, south of Wawa, Ontario, Canada) 43
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/47927006843.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47927006843_52532804e9_m.jpg" alt="" /></a><br />Monchiquite lamprophyre dike (Precambrian; Michipicoten River Bridge South roadcut, south of Wawa, Ontario, Canada) 43 / James St. John</span>

サイズ変更など

Aphyric & partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, 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/46084693294.html" target="_blank"><img src="http://farm8.static.flickr.com/7808/46084693294_a5a5b2a3f3_m.jpg" alt="" /></a><br />Aphyric & partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 9 / James St. John</span>

サイズ変更など

Magnetite-ilmenite (Mesoproterozoic, ~1155 Ma; mine at Tahawus/Sanford Lake, New York State, 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/49895576651.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49895576651_703e9b958f_m.jpg" alt="" /></a><br />Magnetite-ilmenite (Mesoproterozoic, ~1155 Ma; mine at Tahawus/Sanford Lake, New York State, USA) 6 / James St. John</span>

サイズ変更など

Monzonite (Bearpaw 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/49061261087.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49061261087_51b9352f55_m.jpg" alt="" /></a><br />Monzonite (Bearpaw Mountains, Montana, USA) 4 / James St. John</span>

サイズ変更など

Monzonite (Bearpaw 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/49061260742.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49061260742_d03b4fdbd0_m.jpg" alt="" /></a><br />Monzonite (Bearpaw Mountains, Montana, USA) 1 / James St. John</span>

サイズ変更など

Anorthosite with labradorite (Wiborg Batholith, 1633 Ma; Kymi Province, Finland) 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/50420368386.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50420368386_acb95c35f4_m.jpg" alt="" /></a><br />Anorthosite with labradorite (Wiborg Batholith, 1633 Ma; Kymi Province, Finland) 9 / James St. John</span>

サイズ変更など

Magnetite-ilmenite (Mesoproterozoic, ~1155 Ma; mine at Tahawus/Sanford Lake, New York State, 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/49895880357.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49895880357_bc2377b556_m.jpg" alt="" /></a><br />Magnetite-ilmenite (Mesoproterozoic, ~1155 Ma; mine at Tahawus/Sanford Lake, New York State, USA) 9 / James St. John</span>

サイズ変更など

Madupite lamproite (Late Pliocene, 3 Ma; Pilot Butte volcanic center, 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/48931912952.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48931912952_05fb11d464_m.jpg" alt="" /></a><br />Madupite lamproite (Late Pliocene, 3 Ma; Pilot Butte volcanic center, Leucite Hills, Wyoming, USA) 2 / James St. John</span>

サイズ変更など

Aphyric & partially devitrified rhyolitic obsidian with lithophysae (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, 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/39844369373.html" target="_blank"><img src="http://farm5.static.flickr.com/4881/39844369373_d6939facb1_m.jpg" alt="" /></a><br />Aphyric & partially devitrified rhyolitic obsidian with lithophysae (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 1 / James St. John</span>

サイズ変更など

Actinolite xenolith in sandorite lamprophyre (Sandor Dike, Neoarchean, 2.703 Ga; Route 17 roadcut northeast of Wasp Lake & north of Wawa, Ontario, Canada) 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/48343238112.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48343238112_2b9f22c786_m.jpg" alt="" /></a><br />Actinolite xenolith in sandorite lamprophyre (Sandor Dike, Neoarchean, 2.703 Ga; Route 17 roadcut northeast of Wasp Lake & north of Wawa, Ontario, Canada) 11 / James St. John</span>

サイズ変更など

Columnar-jointed orendite lamproite lava (Pleistocene, 1.30-1.37 Ma; Black Rock volcanic center, Leucite Hills, Wyoming, 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/48972647082.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48972647082_d901b154d2_m.jpg" alt="" /></a><br />Columnar-jointed orendite lamproite lava (Pleistocene, 1.30-1.37 Ma; Black Rock volcanic center, Leucite Hills, Wyoming, USA) 4 / James St. John</span>

サイズ変更など

Partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, 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/46809794081.html" target="_blank"><img src="http://farm8.static.flickr.com/7913/46809794081_3261fe98f6_m.jpg" alt="" /></a><br />Partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 18 / James St. John</span>

サイズ変更など

Inch-scale layering of plagioclase feldspar and pyroxene (Stillwater Complex, Neoarchean, 2.71 Ga; near the Stillwater Mine, Beartooth Mountains, Montana, USA) 38
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/52365758739.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52365758739_e970f8b119_m.jpg" alt="" /></a><br />Inch-scale layering of plagioclase feldspar and pyroxene (Stillwater Complex, Neoarchean, 2.71 Ga; near the Stillwater Mine, Beartooth Mountains, Montana, USA) 38 / James St. John</span>

サイズ変更など

Vesicular lava (July-August 2001 eruption of Mt. Etna, eastern Sicily) 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/51024337227.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/51024337227_025ae69069_m.jpg" alt="" /></a><br />Vesicular lava (July-August 2001 eruption of Mt. Etna, eastern Sicily) 1 / James St. John</span>

サイズ変更など

Basalt (Newark Supergroup, Lower Jurassic; Somerset County, New Jersey, 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/52685971807.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52685971807_7a7864dde1_m.jpg" alt="" /></a><br />Basalt (Newark Supergroup, Lower Jurassic; Somerset County, New Jersey, USA) 11 / James St. John</span>

サイズ変更など

Llao Rock (Crater Lake Caldera, Oregon, 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/40197843540.html" target="_blank"><img src="http://farm1.static.flickr.com/956/40197843540_88723c3275_m.jpg" alt="" /></a><br />Llao Rock (Crater Lake Caldera, Oregon, USA) 3 / James St. John</span>

サイズ変更など

Anorthosite (Lac St. Jean Anorthosite Complex, Mesoproterozoic, 1140-1157 Ma; Lake St-Jean, Quebec, 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/50421609556.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50421609556_17b3d2304b_m.jpg" alt="" /></a><br />Anorthosite (Lac St. Jean Anorthosite Complex, Mesoproterozoic, 1140-1157 Ma; Lake St-Jean, Quebec, Canada) 1 / James St. John</span>

サイズ変更など

Wyomingite (Pleistocene, 950-960 ka; Zirkel Mesa, Leucite Hills, Wyoming, USA) 56
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/48965629401.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48965629401_cab9dd2d24_m.jpg" alt="" /></a><br />Wyomingite (Pleistocene, 950-960 ka; Zirkel Mesa, Leucite Hills, Wyoming, USA) 56 / James St. John</span>

サイズ変更など

Lake Superior rocky shoreline (Split Rock Lighthouse, 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/22432482803.html" target="_blank"><img src="http://farm1.static.flickr.com/696/22432482803_f48cc62e14_m.jpg" alt="" /></a><br />Lake Superior rocky shoreline (Split Rock Lighthouse, Minnesota, USA) 2 / James St. John</span>

サイズ変更など

Ordinary chondrite (New Concord Meteorite) 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/46808778024.html" target="_blank"><img src="http://farm8.static.flickr.com/7818/46808778024_616524e0cf_m.jpg" alt="" /></a><br />Ordinary chondrite (New Concord Meteorite) 6 / James St. John</span>

サイズ変更など

Partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 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/45894550925.html" target="_blank"><img src="http://farm5.static.flickr.com/4842/45894550925_c3d9222b23_m.jpg" alt="" /></a><br />Partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 19 / James St. John</span>

サイズ変更など

Basalt (Newark Supergroup, Lower Jurassic; Somerset County, New Jersey, 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/52686914440.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52686914440_bea35d251c_m.jpg" alt="" /></a><br />Basalt (Newark Supergroup, Lower Jurassic; Somerset County, New Jersey, USA) 6 / James St. John</span>

サイズ変更など

Anorthosite (Poe Mountain Anorthosite, Mesoproterozoic, 1.43 Ga; Sybille Canyon, 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/31930953175.html" target="_blank"><img src="http://farm1.static.flickr.com/686/31930953175_cf4b1679a5_m.jpg" alt="" /></a><br />Anorthosite (Poe Mountain Anorthosite, Mesoproterozoic, 1.43 Ga; Sybille Canyon, Laramie Range, Wyoming, USA) 7 / James St. John</span>

サイズ変更など

Peridotite mantle xenoliths in phonotephrite (Peridot Mesa Flow, Middle Pleistocene, 580 ka; Peridot Mesa, San Carlos Volcanic Field, Arizona, USA) 36
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/51968256441.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/51968256441_aaaa26c2f8_m.jpg" alt="" /></a><br />Peridotite mantle xenoliths in phonotephrite (Peridot Mesa Flow, Middle Pleistocene, 580 ka; Peridot Mesa, San Carlos Volcanic Field, Arizona, USA) 36 / James St. John</span>

サイズ変更など

Bastite (apparently) (Neoarchean; Red Lodge Chromite District, 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/52574717741.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52574717741_dca2d2c56f_m.jpg" alt="" /></a><br />Bastite (apparently) (Neoarchean; Red Lodge Chromite District, Beartooth Mountains, Montana, USA) 1 / James St. John</span>

サイズ変更など

Partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 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/46084752094.html" target="_blank"><img src="http://farm5.static.flickr.com/4864/46084752094_edb444405b_m.jpg" alt="" /></a><br />Partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 17 / James St. John</span>

サイズ変更など

Basalt (Newark Supergroup, Lower Jurassic; Somerset County, New Jersey, 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/52686914460.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52686914460_5bfcd0429c_m.jpg" alt="" /></a><br />Basalt (Newark Supergroup, Lower Jurassic; Somerset County, New Jersey, USA) 7 / James St. John</span>

サイズ変更など

Basalt (McCartys Flow, Holocene, ~2.4 to 3.9 ka; southeast of Grants, New Mexico, 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/52770757777.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52770757777_b84728a71c_m.jpg" alt="" /></a><br />Basalt (McCartys Flow, Holocene, ~2.4 to 3.9 ka; southeast of Grants, New Mexico, USA) 18 / James St. John</span>

サイズ変更など

Partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 22
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/46091701544.html" target="_blank"><img src="http://farm5.static.flickr.com/4857/46091701544_7965717d45_m.jpg" alt="" /></a><br />Partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 22 / James St. John</span>

サイズ変更など

Wyomingite (Lower Pleistocene, 0.95 Ma; quarry on volcanic cone on Zirkel Mesa, Leucite Hills Volcanic Province, Wyoming, USA) 26
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/49992553866.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49992553866_1645e4c3df_m.jpg" alt="" /></a><br />Wyomingite (Lower Pleistocene, 0.95 Ma; quarry on volcanic cone on Zirkel Mesa, Leucite Hills Volcanic Province, Wyoming, USA) 26 / James St. John</span>

サイズ変更など

Actinolite xenolith in sandorite lamprophyre (Sandor Dike, Neoarchean, 2.703 Ga; Route 17 roadcut northeast of Wasp Lake & north of Wawa, Ontario, Canada) 12
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/48343322437.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48343322437_7c9c86683b_m.jpg" alt="" /></a><br />Actinolite xenolith in sandorite lamprophyre (Sandor Dike, Neoarchean, 2.703 Ga; Route 17 roadcut northeast of Wasp Lake & north of Wawa, Ontario, Canada) 12 / James St. John</span>

サイズ変更など

Monchiquite lamprophyre dike (Precambrian; Michipicoten River Bridge South roadcut, south of Wawa, Ontario, Canada) 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/47926800887.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47926800887_38a2447370_m.jpg" alt="" /></a><br />Monchiquite lamprophyre dike (Precambrian; Michipicoten River Bridge South roadcut, south of Wawa, Ontario, Canada) 8 / James St. John</span>

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Columnar-jointed orendite lamproite lava (Pleistocene, 1.30-1.37 Ma; Black Rock volcanic center, Leucite Hills, Wyoming, 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/48972457776.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48972457776_78228b80e5_m.jpg" alt="" /></a><br />Columnar-jointed orendite lamproite lava (Pleistocene, 1.30-1.37 Ma; Black Rock volcanic center, Leucite Hills, Wyoming, USA) 14 / James St. John</span>

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Aphyric & partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, 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/32933853308.html" target="_blank"><img src="http://farm8.static.flickr.com/7926/32933853308_ef3bc6cefc_m.jpg" alt="" /></a><br />Aphyric & partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 8 / James St. John</span>

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Eclogite (Late Silurian to Early Devonian, ~400-423 Ma; Almenningen, Vestland, Norway) 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/53363684115.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/53363684115_c0d07c9746_m.jpg" alt="" /></a><br />Eclogite (Late Silurian to Early Devonian, ~400-423 Ma; Almenningen, Vestland, Norway) 9 / James St. John</span>

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Inch-scale layering of plagioclase feldspar and pyroxene (Stillwater Complex, Neoarchean, 2.71 Ga; near the Stillwater Mine, Beartooth Mountains, Montana, USA) 39
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/52365761804.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52365761804_142f91a495_m.jpg" alt="" /></a><br />Inch-scale layering of plagioclase feldspar and pyroxene (Stillwater Complex, Neoarchean, 2.71 Ga; near the Stillwater Mine, Beartooth Mountains, Montana, USA) 39 / James St. John</span>

サイズ変更など

Partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 16
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/32933896978.html" target="_blank"><img src="http://farm8.static.flickr.com/7866/32933896978_51d6a806d6_m.jpg" alt="" /></a><br />Partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 16 / James St. John</span>

サイズ変更など

Partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 26
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/46816696251.html" target="_blank"><img src="http://farm8.static.flickr.com/7859/46816696251_57275dbf9c_m.jpg" alt="" /></a><br />Partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 26 / James St. John</span>

サイズ変更など

Partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 20
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/32933848108.html" target="_blank"><img src="http://farm8.static.flickr.com/7823/32933848108_984d95317b_m.jpg" alt="" /></a><br />Partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 20 / James St. John</span>

サイズ変更など

Llao Rock (Crater Lake Caldera, Oregon, USA) 25
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/28155947118.html" target="_blank"><img src="http://farm1.static.flickr.com/976/28155947118_1b0786c875_m.jpg" alt="" /></a><br />Llao Rock (Crater Lake Caldera, Oregon, USA) 25 / James St. John</span>

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Anorthosite-nelsonite (Poe Mountain Anorthosite, Mesoproterozoic, 1.431-1.436 Ga; Sybille Canyon, Laramie Range, Wyoming, 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/48679786528.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48679786528_9c48ae7e71_m.jpg" alt="" /></a><br />Anorthosite-nelsonite (Poe Mountain Anorthosite, Mesoproterozoic, 1.431-1.436 Ga; Sybille Canyon, Laramie Range, Wyoming, USA) 3 / James St. John</span>

サイズ変更など

Llao Rock (Crater Lake Caldera, Oregon, USA) 24
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/28155964598.html" target="_blank"><img src="http://farm1.static.flickr.com/948/28155964598_0ce584dab8_m.jpg" alt="" /></a><br />Llao Rock (Crater Lake Caldera, Oregon, USA) 24 / James St. John</span>

サイズ変更など

Basaltic lava flow top 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/52882172824.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52882172824_7e80594408_m.jpg" alt="" /></a><br />Basaltic lava flow top 4 / James St. John</span>

サイズ変更など

Basalt (Newark Supergroup, Lower Jurassic; Somerset County, New Jersey, 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/52685971842.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52685971842_05116c1b41_m.jpg" alt="" /></a><br />Basalt (Newark Supergroup, Lower Jurassic; Somerset County, New Jersey, USA) 10 / James St. John</span>

サイズ変更など

Chromian diopside (Almklovdalen Peridotite, Precambrian; Gusdal Olivine Pit, near Åheim, Norway) 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/50622661712.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50622661712_87906c7400_m.jpg" alt="" /></a><br />Chromian diopside (Almklovdalen Peridotite, Precambrian; Gusdal Olivine Pit, near Åheim, Norway) 3 / James St. John</span>

サイズ変更など

Calc-silicate rocks & reaction rim with metabentonite (Gouverneur Marble, Mesoproterozoic, ~1.1 Ga; Route 11 roadcut southwest of Canton, New York State, 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/49908510698.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49908510698_92a7a8c968_m.jpg" alt="" /></a><br />Calc-silicate rocks & reaction rim with metabentonite (Gouverneur Marble, Mesoproterozoic, ~1.1 Ga; Route 11 roadcut southwest of Canton, New York State, USA) 2 / James St. John</span>

サイズ変更など

Anorthosite (Lac St. Jean Anorthosite Complex, Mesoproterozoic, 1140-1157 Ma; Lake St-Jean, Quebec, Canada) 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/50421616221.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50421616221_75f54be3e8_m.jpg" alt="" /></a><br />Anorthosite (Lac St. Jean Anorthosite Complex, Mesoproterozoic, 1140-1157 Ma; Lake St-Jean, Quebec, Canada) 2 / James St. John</span>

サイズ変更など

Anorthosite (Poe Mountain Anorthosite, Mesoproterozoic, 1.43 Ga; Sybille Canyon area, Laramie Range, Wyoming, 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/51143004861.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/51143004861_cefb156e63_m.jpg" alt="" /></a><br />Anorthosite (Poe Mountain Anorthosite, Mesoproterozoic, 1.43 Ga; Sybille Canyon area, Laramie Range, Wyoming, USA) 3 / 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) 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/21454355419.html" target="_blank"><img src="http://farm6.static.flickr.com/5693/21454355419_fa77cc1b1f_m.jpg" alt="" /></a><br />Layered gabbros (troctolitic series, Duluth Complex, Mesoproterozoic, 1099 Ma; Thomson Hill Information Center Outcrop, Skyline Parkway, Duluth, Minnesota, USA) 7 / James St. John</span>

サイズ変更など

Inch-scale layering of plagioclase feldspar and pyroxene (Stillwater Complex, Neoarchean, 2.71 Ga; near the Stillwater Mine, Beartooth Mountains, Montana, USA) 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/52365675628.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52365675628_04ed06f345_m.jpg" alt="" /></a><br />Inch-scale layering of plagioclase feldspar and pyroxene (Stillwater Complex, Neoarchean, 2.71 Ga; near the Stillwater Mine, Beartooth Mountains, Montana, USA) 40 / James St. John</span>

サイズ変更など

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