feldspar

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Porphyritic dacite (Clear Creek, Shasta County, California, USA)
by James St. John

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/40770919744.html" target="_blank"><img src="http://farm1.static.flickr.com/898/40770919744_fa4b46f552_m.jpg" alt="" /></a><br />Porphyritic dacite (Clear Creek, Shasta County, California, USA) / James St. John</span>

サイズ変更など

Pegmatitic granite (alaskite) 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/16127154743.html" target="_blank"><img src="http://farm9.static.flickr.com/8605/16127154743_a0e47ab9df_m.jpg" alt="" /></a><br />Pegmatitic granite (alaskite) 2 / James St. John</span>

サイズ変更など

Delicatus Ice Granite (graphic granite in pegmatitic granite) 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/35449272752.html" target="_blank"><img src="http://farm5.static.flickr.com/4004/35449272752_970944695f_m.jpg" alt="" /></a><br />Delicatus Ice Granite (graphic granite in pegmatitic granite) 3 / 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) 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/16613462059.html" target="_blank"><img src="http://farm9.static.flickr.com/8683/16613462059_aa60d352e9_m.jpg" alt="" /></a><br />Xenolith in granodiorite (Giant Forest Granodiorite, mid-Cretaceous, 97-102 Ma; Moro Rock, Sequoia National Park, California, USA) 6 / James St. John</span>

サイズ変更など

"Tan Brown Granite" (porphyritic granite, Archean; 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/14618910269.html" target="_blank"><img src="http://farm4.static.flickr.com/3859/14618910269_81618287ac_m.jpg" alt="" /></a><br />"Tan Brown Granite" (porphyritic granite, Archean; Andhra Pradesh State, southern India) / James St. John</span>

サイズ変更など

Pisolitic bauxite (Arkansas, 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/16690002000.html" target="_blank"><img src="http://farm9.static.flickr.com/8711/16690002000_dbfbe9e43d_m.jpg" alt="" /></a><br />Pisolitic bauxite (Arkansas, USA) 4 / James St. John</span>

サイズ変更など

Black porphyritic metarhyolite (Utley Rhyolite, Paleoproterozoic, 1765 Ma; Utley Rhyolite Quarry, near Green Lake, Wisconsin, 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/51008174997.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/51008174997_7c888399ce_m.jpg" alt="" /></a><br />Black porphyritic metarhyolite (Utley Rhyolite, Paleoproterozoic, 1765 Ma; Utley Rhyolite Quarry, near Green Lake, Wisconsin, USA) 4 / James St. John</span>

サイズ変更など

Olivine basalt (Cedar Canyon, Iron County, Utah, 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/48680331971.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48680331971_a4a2815706_m.jpg" alt="" /></a><br />Olivine basalt (Cedar Canyon, Iron County, Utah, USA) 17 / James St. John</span>

サイズ変更など

President Bridge (Natural Bridges National Monument, 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/8288081908.html" target="_blank"><img src="http://farm9.static.flickr.com/8058/8288081908_defefb4ab5_m.jpg" alt="" /></a><br />President Bridge (Natural Bridges National Monument, Utah, USA) 4 / 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) 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/16773715466.html" target="_blank"><img src="http://farm9.static.flickr.com/8566/16773715466_ca60d7236a_m.jpg" alt="" /></a><br />Granodiorite (Giant Forest Granodiorite, mid-Cretaceous, 97-102 Ma; Moro Rock, Sequoia National Park, California, USA) 1 / James St. John</span>

サイズ変更など

Lakeshore beach gravel (upper Holocene; derived from the Split Rock intrusive felsite, Proterozoic; Iona's Beach, northeastern Minnesota, USA) 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/23242330062.html" target="_blank"><img src="http://farm1.static.flickr.com/724/23242330062_feb9830e02_m.jpg" alt="" /></a><br />Lakeshore beach gravel (upper Holocene; derived from the Split Rock intrusive felsite, Proterozoic; Iona's Beach, northeastern Minnesota, USA) 12 / James St. John</span>

サイズ変更など

Congressman Bridge (Natural Bridges National Monument, 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/8287017909.html" target="_blank"><img src="http://farm9.static.flickr.com/8479/8287017909_6c28e86690_m.jpg" alt="" /></a><br />Congressman Bridge (Natural Bridges National Monument, Utah, USA) 4 / James St. John</span>

サイズ変更など

Black Galaxy Granite (norite) (Proterozoic; Chimkurthi area, 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/14804636094.html" target="_blank"><img src="http://farm3.static.flickr.com/2897/14804636094_681e5d15d7_m.jpg" alt="" /></a><br />Black Galaxy Granite (norite) (Proterozoic; Chimkurthi area, Andhra Pradesh State, India) / James St. John</span>

サイズ変更など

Sandstone injectite in granite (Tava Sandstone in Pikes Peak Granite, Proterozoic; west of Woodland Park, Colorado, 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/49329727931.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49329727931_7b3388bb67_m.jpg" alt="" /></a><br />Sandstone injectite in granite (Tava Sandstone in Pikes Peak Granite, Proterozoic; west of Woodland Park, Colorado, USA) 5 / James St. John</span>

サイズ変更など

Vesicular porphyritic trachyte (Magadi Trachyte (Plateau Trachyte), Pleistocene, 700 ka to 1.4 Ma; northern end of Lake Magadi, Kenya Rift segment of the East African Rift Valley)
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/14850565899.html" target="_blank"><img src="http://farm6.static.flickr.com/5566/14850565899_9f2bf829a0_m.jpg" alt="" /></a><br />Vesicular porphyritic trachyte (Magadi Trachyte (Plateau Trachyte), Pleistocene, 700 ka to 1.4 Ma; northern end of Lake Magadi, Kenya Rift segment of the East African Rift Valley) / James St. John</span>

サイズ変更など

Basalt (Newark Supergroup, Lower Jurassic; Somerset County, New Jersey, USA) 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/52686489571.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52686489571_2f49c072c1_m.jpg" alt="" /></a><br />Basalt (Newark Supergroup, Lower Jurassic; Somerset County, New Jersey, USA) 27 / 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) 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/16798481551.html" target="_blank"><img src="http://farm8.static.flickr.com/7639/16798481551_08a2e2296d_m.jpg" alt="" /></a><br />Xenolith in granodiorite (Giant Forest Granodiorite, mid-Cretaceous, 97-102 Ma; Moro Rock, Sequoia National Park, California, USA) 3 / James St. John</span>

サイズ変更など

Congressman Bridge (Natural Bridges National Monument, Utah, 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/8287016269.html" target="_blank"><img src="http://farm9.static.flickr.com/8490/8287016269_333efa4d4e_m.jpg" alt="" /></a><br />Congressman Bridge (Natural Bridges National Monument, Utah, USA) 6 / James St. John</span>

サイズ変更など

_IGP7971.PEF Admiration Point
by niiicedave

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/25302490331.html" target="_blank"><img src="http://farm2.static.flickr.com/1604/25302490331_fc7026e9aa_m.jpg" alt="" /></a><br />_IGP7971.PEF Admiration Point / niiicedave</span>

サイズ変更など

"Crystal Gold Granite" (porphyritic granite, English River Subprovince intrusion, 2.66-2.71 Ga, Neoarchean; Second Mountain Quarry, western Ontario, 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/14803135864.html" target="_blank"><img src="http://farm3.static.flickr.com/2939/14803135864_f045bb51f3_m.jpg" alt="" /></a><br />"Crystal Gold Granite" (porphyritic granite, English River Subprovince intrusion, 2.66-2.71 Ga, Neoarchean; Second Mountain Quarry, western Ontario, Canada) / James St. John</span>

サイズ変更など

Ordinary chondrite (Park Forest Meteorite) 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/14777587631.html" target="_blank"><img src="http://farm4.static.flickr.com/3836/14777587631_8a9da3f0ec_m.jpg" alt="" /></a><br />Ordinary chondrite (Park Forest Meteorite) 1 / James St. John</span>

サイズ変更など

Ordinary chondrite (Park Forest Meteorite) 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/14594069969.html" target="_blank"><img src="http://farm3.static.flickr.com/2936/14594069969_809d83495b_m.jpg" alt="" /></a><br />Ordinary chondrite (Park Forest Meteorite) 2 / James St. John</span>

サイズ変更など

"Columbia Pink Granite" (porphyritic granite, Conway Granite, Jurassic; east of Tinkerville, New Hampshire, 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/14618798910.html" target="_blank"><img src="http://farm6.static.flickr.com/5585/14618798910_075f32e695_m.jpg" alt="" /></a><br />"Columbia Pink Granite" (porphyritic granite, Conway Granite, Jurassic; east of Tinkerville, New Hampshire, USA) / James St. John</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) 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/16179631303.html" target="_blank"><img src="http://farm9.static.flickr.com/8593/16179631303_7ac9a0e38c_m.jpg" alt="" /></a><br />Moro Rock exfoliation dome (Giant Forest Granodiorite, mid-Cretaceous, 97-102 Ma; Sequoia National Park, California, USA) 1 / James St. John</span>

サイズ変更など

"Carioca Gold Granite" (granite, ~500-650 Ma, Neoproterozoic to Cambrian; Lavras, Rio de Janeiro 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/14618805190.html" target="_blank"><img src="http://farm4.static.flickr.com/3856/14618805190_47bd811336_m.jpg" alt="" /></a><br />"Carioca Gold Granite" (granite, ~500-650 Ma, Neoproterozoic to Cambrian; Lavras, Rio de Janeiro State, Brazil) / James St. John</span>

サイズ変更など

Eucrite (North West Africa 3359 Meteorite) 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/14785947504.html" target="_blank"><img src="http://farm6.static.flickr.com/5575/14785947504_9417118e62_m.jpg" alt="" /></a><br />Eucrite (North West Africa 3359 Meteorite) 1 / James St. John</span>

サイズ変更など

Sulfidic chromitite (Merensky Reef, Bushveld Complex, mid-Paleoproterozoic, 2.054-2.055 Ga; Rustenburg Platinum Mine, northeastern South Africa) 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/15362678021.html" target="_blank"><img src="http://farm4.static.flickr.com/3905/15362678021_8976b4095c_m.jpg" alt="" /></a><br />Sulfidic chromitite (Merensky Reef, Bushveld Complex, mid-Paleoproterozoic, 2.054-2.055 Ga; Rustenburg Platinum Mine, northeastern South Africa) 1 / James St. John</span>

サイズ変更など

Gabbroic anorthosite to anorthositic gabbro (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/22075196699.html" target="_blank"><img src="http://farm1.static.flickr.com/651/22075196699_602a6ae933_m.jpg" alt="" /></a><br />Gabbroic anorthosite to anorthositic gabbro (anorthosite series, Duluth Complex, Mesoproterozoic, 1099 Ma; Merritt Creek West Skyline Parkway roadcut, Duluth, Minnesota, USA) 2 / James St. John</span>

サイズ変更など

Sunstone Public Collection Area
by BLM Oregon & Washington

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/40943896843.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/40943896843_bb2e85a38e_m.jpg" alt="" /></a><br />Sunstone Public Collection Area / BLM Oregon & Washington</span>

サイズ変更など

Quartz avec une mince feuille de mica
by Charles de Mille-Isles

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/6433049943.html" target="_blank"><img src="http://farm8.static.flickr.com/7156/6433049943_f83917eabd_m.jpg" alt="" /></a><br />Quartz avec une mince feuille de mica / Charles de Mille-Isles</span>

サイズ変更など

Microdiamondiferous ultrapotassic minette (Akluilak Dike System, Paleoproterozoic, 1.832 Ga; Gibson Lake area, Central Churchill Province, northern 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/14637088540.html" target="_blank"><img src="http://farm3.static.flickr.com/2930/14637088540_a5a8f2ecdd_m.jpg" alt="" /></a><br />Microdiamondiferous ultrapotassic minette (Akluilak Dike System, Paleoproterozoic, 1.832 Ga; Gibson Lake area, Central Churchill Province, northern Canada) 1 / James St. John</span>

サイズ変更など

Sunstone Public Collection Area
by BLM Oregon & Washington

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/47121152744.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47121152744_5135752ab3_m.jpg" alt="" /></a><br />Sunstone Public Collection Area / BLM Oregon & Washington</span>

サイズ変更など

Faults in inch-scale layered plagioclase feldspar & pyroxene (Stillwater Complex, Neoarchean, 2.71 Ga; near the 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/52377892893.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52377892893_51c14024fd_m.jpg" alt="" /></a><br />Faults in inch-scale layered plagioclase feldspar & pyroxene (Stillwater Complex, Neoarchean, 2.71 Ga; near the Stillwater Mine, Beartooth Mountains, Montana, USA) 2 / James St. John</span>

サイズ変更など

Pillow lava (greenstone) (probably from Upper Peninsula of Michigan, 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/27612727938.html" target="_blank"><img src="http://farm1.static.flickr.com/884/27612727938_69d74e071d_m.jpg" alt="" /></a><br />Pillow lava (greenstone) (probably from Upper Peninsula of Michigan, USA) / 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) 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/50425146886.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50425146886_c60ceb8e94_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) 16 / James St. John</span>

サイズ変更など

Sodalite-aegirine-albite pegmatite (Ice River Complex, Early Mississippian, 356 Ma; southeastern British Columbia, 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/15003852812.html" target="_blank"><img src="http://farm4.static.flickr.com/3915/15003852812_34008445d7_m.jpg" alt="" /></a><br />Sodalite-aegirine-albite pegmatite (Ice River Complex, Early Mississippian, 356 Ma; southeastern British Columbia, Canada) / James St. John</span>

サイズ変更など

Nepheline-cancrinite syenite (Litchfield Pluton, Early Pennsylvanian, ~321 Ma; Litchfield, 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/26612916337.html" target="_blank"><img src="http://farm1.static.flickr.com/894/26612916337_b141b0d2d3_m.jpg" alt="" /></a><br />Nepheline-cancrinite syenite (Litchfield Pluton, Early Pennsylvanian, ~321 Ma; Litchfield, Maine, USA) / James St. John</span>

サイズ変更など

Pegmatitic granite (White Cap Pegmatite, Paleoproterozoic, ~1.7 Ga; White Cap Mine, east of Keystone, Black Hills, South Dakota, USA) 12
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/23790764201.html" target="_blank"><img src="http://farm1.static.flickr.com/693/23790764201_34d65209e8_m.jpg" alt="" /></a><br />Pegmatitic granite (White Cap Pegmatite, Paleoproterozoic, ~1.7 Ga; White Cap Mine, east of Keystone, Black Hills, South Dakota, USA) 12 / James St. John</span>

サイズ変更など

Gneiss (Joshimath Formation, Proterozoic; outcrop at Joshimath, Uttarakhand State, Indian Himalayas) 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/26196405084.html" target="_blank"><img src="http://farm8.static.flickr.com/7371/26196405084_d643ed201b_m.jpg" alt="" /></a><br />Gneiss (Joshimath Formation, Proterozoic; outcrop at Joshimath, Uttarakhand State, Indian Himalayas) 1 / James St. John</span>

サイズ変更など

Azurite orb in granite ("K2 Stone") (Himalayan Mountains of Pakistan) 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/52564578901.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52564578901_65534ec8ec_m.jpg" alt="" /></a><br />Azurite orb in granite ("K2 Stone") (Himalayan Mountains of Pakistan) 3 / James St. John</span>

サイズ変更など

fluorite var. pink fluorite, quartz var. smoky quartz, feldspar var. adularia
by géry60

クリエイティブ・コモンズ表示-改変禁止 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/8926759540.html" target="_blank"><img src="http://farm9.static.flickr.com/8116/8926759540_ec7910f332_m.jpg" alt="" /></a><br />fluorite var. pink fluorite, quartz var. smoky quartz, feldspar var. adularia / géry60</span>

サイズ変更など

Gabbroic anorthosite to anorthositic gabbro (anorthosite series, Duluth Complex, Mesoproterozoic, 1099 Ma; Merritt Creek West Skyline Parkway roadcut, 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/21640991683.html" target="_blank"><img src="http://farm1.static.flickr.com/703/21640991683_8c43e596d4_m.jpg" alt="" /></a><br />Gabbroic anorthosite to anorthositic gabbro (anorthosite series, Duluth Complex, Mesoproterozoic, 1099 Ma; Merritt Creek West Skyline Parkway roadcut, Duluth, Minnesota, USA) 5 / James St. John</span>

サイズ変更など

Granulite ("Kashmir White Granite", ~1.4 Ga, Mesoproterozoic; Madurai District, Tamil Nadu State, Eastern Ghats Orogenic Belt, 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/16308331134.html" target="_blank"><img src="http://farm9.static.flickr.com/8699/16308331134_807b468eb3_m.jpg" alt="" /></a><br />Granulite ("Kashmir White Granite", ~1.4 Ga, Mesoproterozoic; Madurai District, Tamil Nadu State, Eastern Ghats Orogenic Belt, India) / James St. John</span>

サイズ変更など

Pegmatitic granite (White Cap Pegmatite, Paleoproterozoic, ~1.7 Ga; White Cap Mine, east of Keystone, Black Hills, South Dakota, 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/23505427619.html" target="_blank"><img src="http://farm1.static.flickr.com/623/23505427619_4b27839f43_m.jpg" alt="" /></a><br />Pegmatitic granite (White Cap Pegmatite, Paleoproterozoic, ~1.7 Ga; White Cap Mine, east of Keystone, Black Hills, South Dakota, USA) 2 / James St. John</span>

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Mountain Green Granite (garnetiferous metanorthosite, Marcy Anorthosite, Mesoproterozoic, 1.155 Ga; Cold Springs Granite Quarry, near Jay, Adirondacks Mountains, New York State)
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/14790377826.html" target="_blank"><img src="http://farm6.static.flickr.com/5572/14790377826_c41c904c28_m.jpg" alt="" /></a><br />Mountain Green Granite (garnetiferous metanorthosite, Marcy Anorthosite, Mesoproterozoic, 1.155 Ga; Cold Springs Granite Quarry, near Jay, Adirondacks Mountains, New York State) / James St. John</span>

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Porphyritic andesite (Sugarloaf Intrusion, Kate Peak Formation, Middle Miocene; Sugarloaf Hill, Six Mile Canyon, east of Virginia City, Nevada, 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/15630386757.html" target="_blank"><img src="http://farm8.static.flickr.com/7553/15630386757_407d316732_m.jpg" alt="" /></a><br />Porphyritic andesite (Sugarloaf Intrusion, Kate Peak Formation, Middle Miocene; Sugarloaf Hill, Six Mile Canyon, east of Virginia City, Nevada, USA) / James St. John</span>

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Fountain Paint Pots Oct 15, 2011, 5-55 PM_edit
by krossbow

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/32525848780.html" target="_blank"><img src="http://farm1.static.flickr.com/688/32525848780_004da48a37_m.jpg" alt="" /></a><br />Fountain Paint Pots Oct 15, 2011, 5-55 PM_edit / krossbow</span>

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Garnet paragneiss (Nuvvuagittuq Greenstone Belt, Eoarchean, 4.28 Ga; western Ungava Peninsula, eastern side of Hudson Bay, 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/15060583445.html" target="_blank"><img src="http://farm6.static.flickr.com/5556/15060583445_ba89963a40_m.jpg" alt="" /></a><br />Garnet paragneiss (Nuvvuagittuq Greenstone Belt, Eoarchean, 4.28 Ga; western Ungava Peninsula, eastern side of Hudson Bay, Quebec, Canada) / James St. John</span>

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Mesquite Flat Sand Dunes, Death Valley National Park, California
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/16748520171.html" target="_blank"><img src="http://farm9.static.flickr.com/8723/16748520171_20cdc463f3_m.jpg" alt="" /></a><br />Mesquite Flat Sand Dunes, Death Valley National Park, California / Ken Lund</span>

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Gabbroic anorthosite to anorthositic gabbro (anorthosite series, Duluth Complex, Mesoproterozoic, 1099 Ma; Merritt Creek West Skyline Parkway roadcut, Duluth, Minnesota, USA) 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/22073889320.html" target="_blank"><img src="http://farm1.static.flickr.com/678/22073889320_3b34305930_m.jpg" alt="" /></a><br />Gabbroic anorthosite to anorthositic gabbro (anorthosite series, Duluth Complex, Mesoproterozoic, 1099 Ma; Merritt Creek West Skyline Parkway roadcut, Duluth, Minnesota, USA) 13 / James St. John</span>

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beryl var. alkali beryl, tourmaline var. elbaite, feldspar
by géry60

クリエイティブ・コモンズ表示-改変禁止 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48947994511.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48947994511_e406cac904_m.jpg" alt="" /></a><br />beryl var. alkali beryl, tourmaline var. elbaite, feldspar / géry60</span>

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Pegmatitic granite (White Cap Pegmatite, Paleoproterozoic, ~1.7 Ga; White Cap Mine, east of Keystone, Black Hills, South Dakota, USA) 10
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/23245106424.html" target="_blank"><img src="http://farm1.static.flickr.com/589/23245106424_7c0e3c7f50_m.jpg" alt="" /></a><br />Pegmatitic granite (White Cap Pegmatite, Paleoproterozoic, ~1.7 Ga; White Cap Mine, east of Keystone, Black Hills, South Dakota, USA) 10 / James St. John</span>

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Goblet of Venus (Natural Bridges National Monument, Utah, 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/8288071512.html" target="_blank"><img src="http://farm9.static.flickr.com/8347/8288071512_be734bcaba_m.jpg" alt="" /></a><br />Goblet of Venus (Natural Bridges National Monument, Utah, USA) / James St. John</span>

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Porphyritic andesite (Kate Peak Formation, Middle Miocene; Lyon County, western Nevada, 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/15661069958.html" target="_blank"><img src="http://farm9.static.flickr.com/8620/15661069958_910d82baa1_m.jpg" alt="" /></a><br />Porphyritic andesite (Kate Peak Formation, Middle Miocene; Lyon County, western Nevada, USA) / James St. John</span>

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Nepheline syenite (questionably from Wausau, Wisconsin, 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/40770729774.html" target="_blank"><img src="http://farm1.static.flickr.com/798/40770729774_74656dd6b6_m.jpg" alt="" /></a><br />Nepheline syenite (questionably from Wausau, Wisconsin, USA) / James St. John</span>

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beryl var. aquamarine, quartz var. smoky quartz, feldspar var. orthoclase
by géry60

クリエイティブ・コモンズ表示-改変禁止 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/8868536527.html" target="_blank"><img src="http://farm8.static.flickr.com/7318/8868536527_1ff5c306a2_m.jpg" alt="" /></a><br />beryl var. aquamarine, quartz var. smoky quartz, feldspar var. orthoclase / géry60</span>

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Native iron in basalt (Siberian Traps Flood Basalt, Permian-Triassic boundary times, 251 Ma; Putoran Plateau, 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/17338266745.html" target="_blank"><img src="http://farm8.static.flickr.com/7748/17338266745_f6f9eff3fe_m.jpg" alt="" /></a><br />Native iron in basalt (Siberian Traps Flood Basalt, Permian-Triassic boundary times, 251 Ma; Putoran Plateau, Siberia, Russia) 2 / James St. John</span>

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starr-101012-4943-Argyroxiphium_sandwicense_subsp_macrocephalum-habitat_with_large_feldspar_crystal-Puu_o_Maui_Haleakala_National_Park-Maui
by Starr Environmental

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/24759730640.html" target="_blank"><img src="http://farm2.static.flickr.com/1490/24759730640_8f3a14d6bd_m.jpg" alt="" /></a><br />starr-101012-4943-Argyroxiphium_sandwicense_subsp_macrocephalum-habitat_with_large_feldspar_crystal-Puu_o_Maui_Haleakala_National_Park-Maui / Starr Environmental</span>

サイズ変更など

Pumice 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/16758527552.html" target="_blank"><img src="http://farm8.static.flickr.com/7644/16758527552_304fd22198_m.jpg" alt="" /></a><br />Pumice 1 / James St. John</span>

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Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 53
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/47728721141.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47728721141_55a66ea24f_m.jpg" alt="" /></a><br />Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 53 / James St. John</span>

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