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) 255
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50724173081.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50724173081_6d1e66e3f2_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) 255 / James St. John</span>

サイズ変更など

Jaspilite (banded iron formation) (Negaunee Iron-Formation, Mesoproterozoic, 2.11 or 1.874 Ga; Jasper Knob, Ishpeming, 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/15248443904.html" target="_blank"><img src="http://farm8.static.flickr.com/7542/15248443904_4a5cae6388_m.jpg" alt="" /></a><br />Jaspilite (banded iron formation) (Negaunee Iron-Formation, Mesoproterozoic, 2.11 or 1.874 Ga; Jasper Knob, Ishpeming, Upper Peninsula of Michigan, 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) 51
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/47970530397.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47970530397_568ba6d328_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) 51 / James St. John</span>

サイズ変更など

Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, 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/18407679554.html" target="_blank"><img src="http://farm1.static.flickr.com/490/18407679554_21e9dcb5e5_m.jpg" alt="" /></a><br />Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, 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) 50
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/47970582581.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47970582581_9d8bdce497_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) 50 / 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) 87
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/47976335413.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47976335413_55faefa28a_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) 87 / 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) 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/47970579131.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47970579131_ce7879cc49_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) 53 / James St. John</span>

サイズ変更など

Glacially eroded jaspilite banded iron formation outcrop (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, 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/19038451429.html" target="_blank"><img src="http://farm1.static.flickr.com/536/19038451429_39e9e52663_m.jpg" alt="" /></a><br />Glacially eroded jaspilite banded iron formation outcrop (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 3 / James St. John</span>

サイズ変更など

Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 30
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/18842486898.html" target="_blank"><img src="http://farm1.static.flickr.com/331/18842486898_8ec8987aa7_m.jpg" alt="" /></a><br />Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 30 / 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) 46
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/47970201353.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47970201353_c76bb3c92c_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) 46 / James St. John</span>

サイズ変更など

Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 31
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/18842413560.html" target="_blank"><img src="http://farm1.static.flickr.com/306/18842413560_1500874f02_m.jpg" alt="" /></a><br />Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 31 / 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) 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/22610386002.html" target="_blank"><img src="http://farm6.static.flickr.com/5707/22610386002_f94f7f41e0_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (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 (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 223
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48069920347.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48069920347_96115c6c36_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) 223 / James St. John</span>

サイズ変更など

BIF ventifact (hematite-rich banded iron formation, Archean; Ferris Dune Field, Windy Gap, 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/25475946503.html" target="_blank"><img src="http://farm2.static.flickr.com/1666/25475946503_ea1db86eba_m.jpg" alt="" /></a><br />BIF ventifact (hematite-rich banded iron formation, Archean; Ferris Dune Field, Windy Gap, Wyoming, USA) 5 / 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) 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/22435993890.html" target="_blank"><img src="http://farm1.static.flickr.com/701/22435993890_bfb2866cef_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 3 / James St. John</span>

サイズ変更など

Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; display piece in monument at Tower Train Museum, Tower, 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/20906328634.html" target="_blank"><img src="http://farm1.static.flickr.com/585/20906328634_1cfa81e941_m.jpg" alt="" /></a><br />Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; display piece in monument at Tower Train Museum, Tower, Minnesota, USA) 2 / James St. John</span>

サイズ変更など

Impact-pulverized iron formation (Early Permian, ~280 Ma; Terny Impact Crater, Ukraine) 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/50677950573.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50677950573_90f5fa499c_m.jpg" alt="" /></a><br />Impact-pulverized iron formation (Early Permian, ~280 Ma; Terny Impact Crater, Ukraine) 1 / James St. John</span>

サイズ変更など

Magnetite banded iron formation (BIF) (Goldman Meadows Formation, Neoarchean, 2.87 Ga; Atlantic City Iron Mine, Wind River Range, Wyoming, 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/15056362921.html" target="_blank"><img src="http://farm6.static.flickr.com/5593/15056362921_de28b76756_m.jpg" alt="" /></a><br />Magnetite banded iron formation (BIF) (Goldman Meadows Formation, Neoarchean, 2.87 Ga; Atlantic City Iron Mine, Wind River Range, Wyoming, 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) 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/47969983376.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47969983376_68f0cbaab5_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) 16 / 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) 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/15059380105.html" target="_blank"><img src="http://farm4.static.flickr.com/3879/15059380105_8c08730728_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) 2 / 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) 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/40743254873.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/40743254873_ebc9f193d7_m.jpg" alt="" /></a><br />Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Ottertail Lake Northeast roadcut, near Bruce Mines, Ontario, Canada) 81 / 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) 215
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48069862298.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48069862298_e7df172a11_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) 215 / James St. John</span>

サイズ変更など

Banded iron formation (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Cliffs Shaft Mine, Ishpeming, Michigan, 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/49731984236.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49731984236_391e5508cc_m.jpg" alt="" /></a><br />Banded iron formation (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Cliffs Shaft Mine, Ishpeming, Michigan, 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) 254
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50724174281.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50724174281_d23246e034_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) 254 / 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) 207
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48069913567.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48069913567_4bba641f3a_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) 207 / James St. John</span>

サイズ変更など

Hematite-rich iron ore (Precambrian; Pioneer Mine, Ely, 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/50542570402.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50542570402_57d74a7a4f_m.jpg" alt="" /></a><br />Hematite-rich iron ore (Precambrian; Pioneer Mine, Ely, Minnesota, USA) 2 / 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) 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/50725548851.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50725548851_49d02139e3_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Temagami Iron-Formation, Neoarchean, 2.736 Ga; Sherman Iron Mine, Temagami, Ontario, Canada) 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) 233
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48069820031.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48069820031_6c86586411_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) 233 / James St. John</span>

サイズ変更など

Impact-pulverized iron formation (Early Permian, ~280 Ma; Terny Impact Crater, Ukraine) 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/50678702051.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50678702051_93e27cefd4_m.jpg" alt="" /></a><br />Impact-pulverized iron formation (Early Permian, ~280 Ma; Terny Impact Crater, Ukraine) 2 / James St. John</span>

サイズ変更など

Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; display piece in monument at Tower Train Museum, Tower, 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/21502776586.html" target="_blank"><img src="http://farm1.static.flickr.com/765/21502776586_745bfd1500_m.jpg" alt="" /></a><br />Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; display piece in monument at Tower Train Museum, Tower, 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) 124
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48069821318.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48069821318_3b30ba7c31_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) 124 / 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) 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/47969792603.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47969792603_5ca02a3827_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) 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) 210
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48069912892.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48069912892_6c0ca8898d_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) 210 / James St. John</span>

サイズ変更など

Pyrite crystals in banded iron formation (Temagami Iron-Formation, Neoarchean, ~2.736 Ga; Temagami North roadcut, Temagami, Ontario, Canada) 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/47018894634.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47018894634_8cd9224395_m.jpg" alt="" /></a><br />Pyrite crystals in banded iron formation (Temagami Iron-Formation, Neoarchean, ~2.736 Ga; Temagami North roadcut, Temagami, Ontario, Canada) 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) 135
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48069871892.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48069871892_0d5fffcd8b_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) 135 / James St. John</span>

サイズ変更など

Interbedded specularite-quartzite (meta-BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Republic Mine, Marquette County, Upper Peninsula of Michigan, 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/14872667999.html" target="_blank"><img src="http://farm4.static.flickr.com/3882/14872667999_4bba1bfa4a_m.jpg" alt="" /></a><br />Interbedded specularite-quartzite (meta-BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Republic Mine, Marquette County, Upper Peninsula of Michigan, 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) 132
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48069817888.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48069817888_c64da480d4_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) 132 / 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) 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/47969968321.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47969968321_b6424d32bf_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) 14 / 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) 200
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48069860303.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48069860303_c3fe9039c3_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) 200 / 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) 113
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48069810658.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48069810658_26de1cc85f_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) 113 / 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) 117
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48069862747.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48069862747_607d259755_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) 117 / 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) 116
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48069808823.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48069808823_421ff53497_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) 116 / 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) 103
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48069852147.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48069852147_11cd45d192_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) 103 / 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) 102
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48069853152.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48069853152_6c3ecdd474_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) 102 / 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) 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/47969793658.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47969793658_88c48749bd_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) 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) 84
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/47976329412.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47976329412_fa60506462_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) 84 / 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) 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/22635118901.html" target="_blank"><img src="http://farm1.static.flickr.com/756/22635118901_7b798d74cc_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 5 / 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) 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/18845680359.html" target="_blank"><img src="http://farm1.static.flickr.com/275/18845680359_6b6d60392b_m.jpg" alt="" /></a><br />Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 13 / 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) 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/47969793833.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47969793833_faa160d552_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) 6 / James St. John</span>

サイズ変更など

Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Pleistocene glacial clast derived from 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/49544176771.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49544176771_bff7018a16_m.jpg" alt="" /></a><br />Jasper-quartz pebble conglomerate (Lorrain Formation, Paleoproterozoic, ~2.3 Ga; Pleistocene glacial clast derived from Canada) 8 / 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) 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/18409399714.html" target="_blank"><img src="http://farm1.static.flickr.com/425/18409399714_697fbde092_m.jpg" alt="" /></a><br />Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 8 / 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) 86
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/47976326607.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47976326607_437ebf1016_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) 86 / James St. John</span>

サイズ変更など

Impact-pulverized iron formation (Early Permian, ~280 Ma; Terny Impact Crater, Ukraine) 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/50680549063.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50680549063_730f18be95_m.jpg" alt="" /></a><br />Impact-pulverized iron formation (Early Permian, ~280 Ma; Terny Impact Crater, Ukraine) 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) 83
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/47976329732.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47976329732_317cb1b1b7_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) 83 / 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) 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/18408220634.html" target="_blank"><img src="http://farm4.static.flickr.com/3812/18408220634_0758ca6d17_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) 3 / 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) 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/18411127373.html" target="_blank"><img src="http://farm4.static.flickr.com/3676/18411127373_6c0140df37_m.jpg" alt="" /></a><br />Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 17 / James St. John</span>

サイズ変更など

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/18408240044.html" target="_blank"><img src="http://farm1.static.flickr.com/484/18408240044_4eb10400e0_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) 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) 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/47970244131.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47970244131_7968ab3411_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) 43 / James St. John</span>

サイズ変更など

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/18408206644.html" target="_blank"><img src="http://farm1.static.flickr.com/485/18408206644_66bb12b187_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) 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) 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/47969814433.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47969814433_7018905321_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) 8 / James St. John</span>

サイズ変更など

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