jaspilite

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Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 82
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/47976336858.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47976336858_6d60f7941e_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 82 / James St. John</span>

サイズ変更など

Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, 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/18409457564.html" target="_blank"><img src="http://farm4.static.flickr.com/3856/18409457564_fe001d51f9_m.jpg" alt="" /></a><br />Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 4 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, 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/22001113434.html" target="_blank"><img src="http://farm6.static.flickr.com/5673/22001113434_6346569a78_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 6 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, 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/22435946090.html" target="_blank"><img src="http://farm1.static.flickr.com/739/22435946090_f9fce122c6_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 7 / James St. John</span>

サイズ変更など

Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, 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/18409444714.html" target="_blank"><img src="http://farm1.static.flickr.com/387/18409444714_364c0ff297_m.jpg" alt="" /></a><br />Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 5 / James St. John</span>

サイズ変更など

Impact-pulverized iron formation (Early Permian, ~280 Ma; Terny Impact Crater, Ukraine) 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/50681307381.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50681307381_21bb1e7fc8_m.jpg" alt="" /></a><br />Impact-pulverized iron formation (Early Permian, ~280 Ma; Terny Impact Crater, Ukraine) 11 / James St. John</span>

サイズ変更など

Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, 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/19005789956.html" target="_blank"><img src="http://farm1.static.flickr.com/511/19005789956_69bee19198_m.jpg" alt="" /></a><br />Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 3 / James St. John</span>

サイズ変更など

Banded iron formation (BIF) (Lower Middleback Iron-Formation, Paleoproterozoic, 1.81 or 1.859-1.945 Ga; hillslope 3 km west of Iron Duke Mine, South Middleback Range, Eyre Peninsula, South Australia) 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/15056339991.html" target="_blank"><img src="http://farm6.static.flickr.com/5567/15056339991_48c35802a1_m.jpg" alt="" /></a><br />Banded iron formation (BIF) (Lower Middleback Iron-Formation, Paleoproterozoic, 1.81 or 1.859-1.945 Ga; hillslope 3 km west of Iron Duke Mine, South Middleback Range, Eyre Peninsula, South Australia) 1 / James St. John</span>

サイズ変更など

Jasper pebbles in quartzite (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 28
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/33831863568.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/33831863568_a65726476c_m.jpg" alt="" /></a><br />Jasper pebbles in quartzite (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 28 / James St. John</span>

サイズ変更など

Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, 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/18844370038.html" target="_blank"><img src="http://farm1.static.flickr.com/546/18844370038_0f73847fc8_m.jpg" alt="" /></a><br />Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 2 / James St. John</span>

サイズ変更など

Specularite & reddish hematite dust-covered specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; ceiling of stope at the 27th level of the Soudan Mine, Soudan, 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/19030804445.html" target="_blank"><img src="http://farm1.static.flickr.com/328/19030804445_cedbb9a7dc_m.jpg" alt="" /></a><br />Specularite & reddish hematite dust-covered specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; ceiling of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 1 / James St. John</span>

サイズ変更など

Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 58
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/47656463042.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47656463042_b8fd476883_m.jpg" alt="" /></a><br />Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 58 / James St. John</span>

サイズ変更など

Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, 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/18844242220.html" target="_blank"><img src="http://farm1.static.flickr.com/381/18844242220_1cd5a3bb3b_m.jpg" alt="" /></a><br />Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 7 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 33
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/47970239696.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47970239696_7820a7a26e_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 33 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 77
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/47976338268.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47976338268_b03da1c70a_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 77 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 81
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/47976326257.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47976326257_66faec1795_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 81 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Temagami Iron-Formation, Neoarchean, 2.736 Ga; Sherman Iron Mine, Temagami, 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/50725548281.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50725548281_5f240a2997_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Temagami Iron-Formation, Neoarchean, 2.736 Ga; Sherman Iron Mine, Temagami, Ontario, Canada) 5 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, 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/47970176511.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47970176511_007c8b8483_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 18 / James St. John</span>

サイズ変更など

Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, 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/19031978705.html" target="_blank"><img src="http://farm1.static.flickr.com/553/19031978705_fb366362bb_m.jpg" alt="" /></a><br />Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 6 / James St. John</span>

サイズ変更など

Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, 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/18844110328.html" target="_blank"><img src="http://farm1.static.flickr.com/312/18844110328_d650ceb41f_m.jpg" alt="" /></a><br />Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 10 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, 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/47970178301.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47970178301_0cdbb83ff5_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 20 / James St. John</span>

サイズ変更など

Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, 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/18844379538.html" target="_blank"><img src="http://farm1.static.flickr.com/525/18844379538_fd9c3b0527_m.jpg" alt="" /></a><br />Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 1 / James St. John</span>

サイズ変更など

Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, 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/18411244103.html" target="_blank"><img src="http://farm4.static.flickr.com/3687/18411244103_a0f4787750_m.jpg" alt="" /></a><br />Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 11 / James St. John</span>

サイズ変更など

Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, 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/19033985771.html" target="_blank"><img src="http://farm1.static.flickr.com/415/19033985771_38264aaa03_m.jpg" alt="" /></a><br />Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 5 / James St. John</span>

サイズ変更など

Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, 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/18843137630.html" target="_blank"><img src="http://farm1.static.flickr.com/351/18843137630_508269ee8c_m.jpg" alt="" /></a><br />Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 6 / James St. John</span>

サイズ変更など

Quartzite & jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, 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/47709715051.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47709715051_77ea04348e_m.jpg" alt="" /></a><br />Quartzite & jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 5 / James St. John</span>

サイズ変更など

Hematite (iron ore) (weathered zone in the Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Whiteside Mine, Buhl, Minnesota, 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/23567017375.html" target="_blank"><img src="http://farm6.static.flickr.com/5735/23567017375_4485a60efd_m.jpg" alt="" /></a><br />Hematite (iron ore) (weathered zone in the Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Whiteside Mine, Buhl, Minnesota, USA) / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 57
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/47970529787.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47970529787_62bd4dc5c9_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 57 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, 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/47970177101.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47970177101_e5eb1f0cf3_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 19 / James St. John</span>

サイズ変更など

Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, 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/19035013871.html" target="_blank"><img src="http://farm4.static.flickr.com/3834/19035013871_0454e9dde4_m.jpg" alt="" /></a><br />Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 12 / James St. John</span>

サイズ変更など

Biwabik Iron-Formation (Paleoproterozoic, ~1.878 Ga; Rouchleau Pit, Virginia, 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/23143524270.html" target="_blank"><img src="http://farm6.static.flickr.com/5727/23143524270_44a9d8590d_m.jpg" alt="" /></a><br />Biwabik Iron-Formation (Paleoproterozoic, ~1.878 Ga; Rouchleau Pit, Virginia, Minnesota, USA) 2 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 70
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/47976238212.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47976238212_19ff692944_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 70 / James St. John</span>

サイズ変更など

Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, 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/18410172313.html" target="_blank"><img src="http://farm1.static.flickr.com/291/18410172313_3b38aa8edb_m.jpg" alt="" /></a><br />Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 7 / James St. John</span>

サイズ変更など

Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, 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/19034940741.html" target="_blank"><img src="http://farm4.static.flickr.com/3666/19034940741_443e97576a_m.jpg" alt="" /></a><br />Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 16 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, 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/47970136943.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47970136943_66d7155012_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 22 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 34
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/47970241831.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47970241831_13f5ee032e_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 34 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, 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/47970541348.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47970541348_16998bca54_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 56 / James St. John</span>

サイズ変更など

Jaspilite (Ironwood Iron-Formation, Paleoproterozoic, ~1.874-1.878 Ga; Wakefield, Gogebic Iron Range, Upper Peninsula of Michigan, 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/24175627997.html" target="_blank"><img src="http://farm5.static.flickr.com/4555/24175627997_3d4ea81ccd_m.jpg" alt="" /></a><br />Jaspilite (Ironwood Iron-Formation, Paleoproterozoic, ~1.874-1.878 Ga; Wakefield, Gogebic Iron Range, Upper Peninsula of Michigan, USA) 3 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 32
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/47970126562.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47970126562_052a13b982_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 32 / James St. John</span>

サイズ変更など

BIF ventifact (limonite-magnetite banded iron formation, Archean; Ferris Dune Field, Windy Gap, 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/26052651216.html" target="_blank"><img src="http://farm2.static.flickr.com/1686/26052651216_55ab48b129_m.jpg" alt="" /></a><br />BIF ventifact (limonite-magnetite banded iron formation, Archean; Ferris Dune Field, Windy Gap, Wyoming, USA) 1 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, 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/47970198233.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47970198233_0052ea6afd_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 38 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 76
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/47976380461.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47976380461_cd4b6de1ca_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 76 / James St. John</span>

サイズ変更など

Jaspilite (Ironwood Iron-Formation, Paleoproterozoic, ~1.874-1.878 Ga; Wakefield, Gogebic Iron Range, Upper Peninsula of Michigan, 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/27264611889.html" target="_blank"><img src="http://farm5.static.flickr.com/4637/27264611889_d08437372a_m.jpg" alt="" /></a><br />Jaspilite (Ironwood Iron-Formation, Paleoproterozoic, ~1.874-1.878 Ga; Wakefield, Gogebic Iron Range, Upper Peninsula of Michigan, USA) 4 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 28
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/47970130207.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47970130207_88e342624a_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 28 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, 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/47970124147.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47970124147_c235667716_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 25 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, 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/47970139193.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47970139193_b40d27bf29_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 26 / James St. John</span>

サイズ変更など

Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, 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/18844712909.html" target="_blank"><img src="http://farm1.static.flickr.com/476/18844712909_2e42f23ddf_m.jpg" alt="" /></a><br />Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 3 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 69
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/47976293576.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47976293576_264f2ccb30_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 69 / James St. John</span>

サイズ変更など

Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, 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/18843161648.html" target="_blank"><img src="http://farm4.static.flickr.com/3774/18843161648_a74cc51107_m.jpg" alt="" /></a><br />Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 8 / James St. John</span>

サイズ変更など

Banded iron formation-sericite schist contact sample (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, 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/22623400625.html" target="_blank"><img src="http://farm1.static.flickr.com/674/22623400625_b0fedb4b39_m.jpg" alt="" /></a><br />Banded iron formation-sericite schist contact sample (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 1 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, 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/47970182071.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47970182071_11b00400d4_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 24 / James St. John</span>

サイズ変更など

Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, 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/18843217890.html" target="_blank"><img src="http://farm1.static.flickr.com/414/18843217890_e746c0ae65_m.jpg" alt="" /></a><br />Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 1 / James St. John</span>

サイズ変更など

Hematite-rich iron ore (Precambrian; Pioneer Mine, Ely, 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/50542426886.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50542426886_d4e5d42765_m.jpg" alt="" /></a><br />Hematite-rich iron ore (Precambrian; Pioneer Mine, Ely, Minnesota, USA) 3 / James St. John</span>

サイズ変更など

Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, 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/19004661656.html" target="_blank"><img src="http://farm1.static.flickr.com/393/19004661656_e44520e4cf_m.jpg" alt="" /></a><br />Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 4 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 79
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/47976330952.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47976330952_c03f9a5e2a_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 79 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 29
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/47970144418.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47970144418_eceb85faeb_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 29 / James St. John</span>

サイズ変更など

Magnetite-quartz meta-iron formation (Goldman Meadows Formation, Mesoarchean, 2.87 Ga; Atlantic City Iron Mine, Wind River Range, 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/21011819380.html" target="_blank"><img src="http://farm6.static.flickr.com/5733/21011819380_1e153a3d60_m.jpg" alt="" /></a><br />Magnetite-quartz meta-iron formation (Goldman Meadows Formation, Mesoarchean, 2.87 Ga; Atlantic City Iron Mine, Wind River Range, Wyoming, USA) 5 / James St. John</span>

サイズ変更など

Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, 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/19030926275.html" target="_blank"><img src="http://farm1.static.flickr.com/437/19030926275_d949212830_m.jpg" alt="" /></a><br />Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 2 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 68
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/47976246318.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47976246318_0ed23fd1a5_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 68 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 47
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/47970526862.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47970526862_eec1376343_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 47 / James St. John</span>

サイズ変更など

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