| GRD02MIS0 |
Pelletal Limestone
|
Fine-grained tan pelletal limestone with yellow ferrous hydroxide veins. Part of the San Vigilio oolite. Billet. Original label: Giallo di Mori, ~2 meters below ~10 meters [thick] oolite. Sept. 3, 1981. |
Italy |
1 |
Camp Elliott |
| GRD02MJS0 |
Oolitic Limestone
|
Medium to small grained oolite. Billet. Original label: Oolite above Giallo di Mori. Sept. 3, 1981. |
Italy |
1 |
Ritter 154, 21 B |
| GRD02MKS0 |
Grainstone
|
Red encrinal limestone. Small sample. Billet. Original label: Red encrinite, ~10 meters above oolite. Sept. 3, 1981. |
Italy |
1 |
Camp Elliott |
| GRD02MLS0 |
Mudstone
|
Small cuttings of yellow fine-grained wackestone. Billet. Original label: Yellow wackestone above oolite. Sept. 3, 1981. |
Italy |
1 |
Camp Elliott |
| GRD02MMS0 |
Oolitic Limestone
|
Dark grey and yellow oolite. Dark grey ooids in a layer in the center of the sample. Decent-sized hand sample. Billet. Original label: Silicified oolite layer in San Vigilio oolite formation. Sept. 3, 1981. |
Italy |
1 |
Camp Elliott |
| GRD02MNS0 |
Oolitic Limestone
|
Tan oolite with lighter crinoid fragments, dark interstitial spots, and thin sparry calcite veins. Decent-sized hand sample. Billet. Original label: Typical San Vigilio oolite with abundant crinoid fabric. Sept. 3, 1981. |
Italy |
1 |
Camp Elliott |
| GRD02MOS0 |
Breccia
|
Limestone breccia with micrite clasts (some with Fe-staining) in a sparry calcite matrix. Very small hand sample. Billet. Original label: Base of channeled, load-casted, graded, with imbricated clasts. Stop 4/1. Sept. 4, 1981. |
Italy |
1 |
Camp Elliott |
| GRD02MPS0 |
Conglomerate
|
Medium-grained limestone conglomerate. Some sparry calcite grains. One small calcite vein. Small hand sample. Billet. Original label: Base of graded bed, with radiolaria, posidonia. Stop 4/1. Sept. 4, 1981. |
Italy |
1 |
Camp Elliott |
| GRD02MQS0 |
Micritic Limestone
|
Grey micrite lense in finely-bedded granular limestone. Small hand sample. Not cut. Original label: Basal part of graded bed. Look for platform debris, Posidonia. Is this younger than Toarcian? Has reddish, nodular limestone near base of secton. No posideonia seen. Looks more or less Domaro. Stop 4/2. Sept. 4, 1981. |
Italy |
0 |
Camp Elliott |
| GRD02MRS0 |
Conglomerate
|
Limestone conglomerate. Micrite clasts with occasional large foraminifera in sparry matrix. Small hand sample. Not cut. Original label: Upper trit. resedimented limestone with abundant larger forams. Stop 3/9. Sept. 14, 1981. |
Italy |
0 |
Camp Elliott |
| 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 |
| GRD02MUS0 |
Banded Iron Formation
|
Banded iron formation of the Hamersley Group. Some layers of asbestiform quartz (Tigers Eye). Jaspilite. Very large uncut sample. |
Australia |
0 |
Ritter 154, 21 M |
| GRD02MVS0 |
Oncoidal Limestone
|
Chambliss Limestone Member, Cararra Formation. Large sample. Limey crust on one side of sample. Nice oncolite. |
California |
0 |
Ritter 154, 21 M |
| GRD02MWS0 |
Oncoidal Limestone
|
Chambliss Limestone Member, Cararra Formation. From the base of Chambliss limestone. Large sample. Beautiful oncolite. |
California |
0 |
Ritter 154, 18 R |
| GRD02MWS1 |
Oncoidal Limestone
|
Chambliss Limestone Member, Cararra Formation. From the base of Chambliss limestone. Large sample. Beautiful oncolite. |
California |
0 |
Ritter 154, 21 M |
| GRD02MXS0 |
Banded Iron Formation
|
Banded iron formation. Slightly wavey bands. Large sample. |
Michigan |
0 |
Ritter 154, 17 R |
| GRD02MXS1 |
Banded Iron Formation
|
Banded iron formation. Slightly wavey bands. Large sample. |
Michigan |
0 |
Ritter 154, 17 R |
| GRD02MYS0 |
Sedimentary Structures
|
Nice example of ventifact. Noonday dolomite. Large sample. |
California |
0 |
Ritter 154, 22 L |
| GRD02MZS0 |
Sedimentary Structures
|
Casts of halite cubes on bedding surface of red sandstone. |
Arizona |
0 |
Ritter 154, 22 L |
| GRD02N0S0 |
Diorite
|
Fine- to medium-grained. Quartz-biotite-plagioclase-vesuvianite. Weakly foliated. |
California |
0 |
Ritter 154, 19 E |
| GRD02N1S0 |
Phyllite
|
Phyllite with quartz lenses and occasional Fe-oxides. Original description: Fine-grained gneiss. |
|
0 |
Ritter 154, 14 E |
| GRD02N2S0 |
Mudstone
|
Small green sample. Originally labeled as quartz monzonite. Appears to be some sort of fractured mudstone with calcite veins |
California |
0 |
Ritter 154, 22 E |
| GRD02N3S0 |
Obsidian
|
Small sample of black perlite with white feldspar phenocrysts |
California |
1 |
Ritter 154, 15 M |
| GRD02N4S0 |
Layered Gneiss
|
Mylonitic gneiss with delta clasts. Lineations on bottom of the sample. Original description: Flaser gneiss interlayered with metasediments. |
California |
3 |
Ritter 154, 3 G |
| GRD02N5S0 |
Marble
|
Coarsely crystalline grey marble. With 2-5 mm layering of course and medium grained crystals |
California |
4 |
Ritter 154, 3 G |
| GRD02N6S0 |
Rhyolite
|
Two pieces of Bishop Tuff. Quartz and brown fiamme in pink groundmass. Original description: Rhyolitic Tuff - Bishop Tuff. Chalky white alteration crust. |
California |
5 |
Ritter 154, 3 F |
| GRD02N7S0 |
Andesite
|
Amphibole-Plagioclase-phyric, speckled black and gray, massive seriate Andesite. Sub/Euhedral prismatic Amphibole (1-3 mm), sub/euhedral plagioclase (1-5 mm). Original Description: Andesite bearing large feldspar and amphibole crystals. 6/7 thin sections present |
California |
7 |
Ritter 154, 3 F |
| GRD02N8S0 |
Granite
|
Small cut sample of granite. Original description: Block from road cut. |
California |
1 |
Ritter 154, 15 B |
| GRD02N9S0 |
Granite
|
Weathered sample of granite. Contains amphibole and biotite. Original description: Talus at foot of Washington column. |
California |
3 |
Ritter 154, 15 B |
