| GRD00OTS0 |
Fe and Mn Formation
|
Original label: Sandy siltstone with marcasite. Alegria formation, Oligocene. 1957. |
California |
1 |
Ritter 154, 17 O |
| GRD00Q6S0 |
Oolitic Ironstone
|
oolitic iron formation, Clinton Fm., Silurian |
New York |
1 |
Ritter 154, 17 O |
| GRD00Q7S0 |
Oolitic Ironstone
|
Original label: Pisolitic ironstone, Coll. No. 337. |
United Kingdom |
1 |
Ritter 154, 17 O |
| GRD00Q8S0 |
Oolitic Ironstone
|
Original label: Oolitic Hematite, Coll. No. 97. EN 177. |
New York |
1 |
Ritter 154, 17 O |
| GRD00Q9S0 |
Oolitic Ironstone
|
Original label: Oolitic ironstone. Middle Lias formation. Jurassic. Coll. No. 338. |
United Kingdom |
1 |
Ritter 154, 17 O |
| GRD00QAS0 |
Fe and Mn Formation
|
Chamositic ironstone (Upper Pliensbach), Banbury ironstone, brachiopods, plant fragments (conifer?). |
United Kingdom |
0 |
Ritter 154, 17 O |
| GRD00QBS0 |
Fe and Mn Formation
|
Chamositic ironstone (Upper Pliensbach). Banbury ironstone. |
United Kingdom |
1 |
Ritter 154, 17 O |
| GRD00QES0 |
Banded Iron Formation
|
Original label: Banded ironstone. Bulk matl: L-104-9 (Room 4645), 1946. |
Michigan |
1 |
Ritter 154, 17 O |
| GRD00QFS0 |
Fe and Mn Formation
|
Rusty red rock with silver hematite veins |
|
0 |
Ritter 154, 17 O |
| GRD00V9S0 |
Oolitic Ironstone
|
flattened ooids. Small sample. |
|
0 |
Camp Elliott |
| GRD00VIS0 |
Banded Iron Formation
|
iron formation, no chert, Grenville front |
|
0 |
Camp Elliott |
| GRD00XOS0 |
Fe and Mn Formation
|
Fe-mineralized rock?hydrothermal alteration? No hand sample; Thin section is in Thin Section only case in RH 154. |
California |
1 |
Ritter 154 |
| GRD00XUS0 |
Oolitic Ironstone
|
Oolitic iron formation, Silurian Clinton Iron Fm., with brachiopods |
Alabama |
1 |
Ritter 154, 17 O |
| GRD01HVS0 |
Fe and Mn Formation
|
Mn/Fe slabs and nodules from Hardground from Piz Boe locality; limestone contains forams and folded calcite veins. |
Italy |
0 |
Ritter 154, 17 O |
| GRD01HWS0 |
Fe and Mn Formation
|
Mn/Fe slabs and nodules from Hardground from Piz Boe locality; limestone contains forams and a partial small nautiloid. |
Italy |
0 |
Camp Elliott |
| GRD01HXS0 |
Fe and Mn Formation
|
Mn/Fe slabs and nodules from Hardground from Piz Boe locality. |
Italy |
0 |
Camp Elliott |
| GRD01HYS0 |
Fe and Mn Formation
|
Mn/Fe slabs and nodules from Hardground from Piz Boe locality; limestone contains forams, radiolarians, a small nautiloid, and shell fragments |
Italy |
0 |
Camp Elliott |
| GRD01HZS0 |
Fe and Mn Formation
|
Mn/Fe slabs and nodules from Hardground from Piz Boe locality. |
Italy |
0 |
Camp Elliott |
| GRD01I0S0 |
Fe and Mn Formation
|
Mn/Fe slabs and nodules from Hardground from Piz Boe locality. Some chips are at Elliott. The thin sections are from: W83-66A,B,C,D. |
Italy |
4 |
Ritter 154, 17 O |
| GRD01MRS0 |
Fe and Mn Formation
|
Red mudstone with thick calcite veins, brecciated (?); |
Italy |
1 |
Ritter 154, 17 O |
| GRD01ZSS0 |
Banded Iron Formation
|
Well-laminated. Polished surface. Layers of Fe-oxides (hematite and megnetite), shale, and quartz (chert). Microfaulting and crossing quartz veinlets. Original description: magnetite-jasper BIF. |
|
0 |
Camp Elliott |
| GRD026CS0 |
Fe and Mn Formation
|
Cut sample. ~5x4x7 cm. Purple, fine-grained sample with Fe-stained veins and thick (~3 mm) Fe-Mn crust. High specific gravity. Billet. Billet pieces. Original label: 21 September, 1975. |
Pacific Ocean |
2 |
Ritter 154, 37 F |
| GRD026JS0 |
Fe and Mn Formation
|
Small uncut sample (~3x3x1 cm). Fine-grained red rock. Billet and billet pieces. Original label: 27 October, 1975. |
Pacific Ocean |
1 |
Ritter 154, 37 F |
| GRD02J3S0 |
Banded Iron Formation
|
banded iron formation (magnetite, hematite, iron carbonate; metamorphosed to greenschist facies) |
Canada |
0 |
Ritter 154 |
| GRD02J3S1 |
Banded Iron Formation
|
banded iron formation (magnetite, hematite, iron carbonate; metamorphosed to greenschist facies) |
Canada |
0 |
Ritter 154, 17 P |
| GRD02J3S2 |
Banded Iron Formation
|
banded iron formation (magnetite, hematite, iron carbonate; metamorphosed to greenschist facies) |
Canada |
0 |
Ritter 154, 17 R |
| GRD02J3S3 |
Banded Iron Formation
|
banded iron formation (magnetite, hematite, iron carbonate; metamorphosed to greenschist facies) |
Canada |
0 |
Ritter 154 |
| GRD02J3S4 |
Banded Iron Formation
|
banded iron formation (magnetite, hematite, iron carbonate; metamorphosed to greenschist facies) |
Canada |
0 |
Ritter 154 |
| GRD02MSS0 |
Banded Iron Formation
|
Stomatolites (Collenia undosa) in banded iron formation. Polished. Original label: Biwabik Iron formation. 2.0 b.y. old. Stromatolites. |
Minnesota |
0 |
Ritter 154, 2 E |
| GRD02MTS0 |
Oolitic Ironstone
|
Oolitic ironstone interlayered with quartz and iron. Original label: Same locality. Oolitic rock. This formation is lateral equivalent of Greenflint Chert. Samples from Tom Johnson. |
Minnesota |
1 |
Ritter 154, 17 O |
