| GRD044XS1 |
Undersaturated
|
coarse-grained carbonatite (calcite, sphene?, sulfides, oxides) |
Arkansas |
0 |
Ritter 154, 16 O |
| GRD044YS0 |
Undersaturated
|
ijolite (px, nepheline, biotite) |
Arkansas |
0 |
Ritter 154, 16 O |
| GRD044ZS0 |
Syenite
|
pseudo-leucite (pseudomorph after leucite) syenite |
Arkansas |
0 |
Ritter 154, 15 D |
| GRD0450S0 |
Syenite
|
foliated nepheline syenite |
Arkansas |
0 |
Ritter 154, 15 D |
| GRD0450S1 |
Syenite
|
foliated nepheline syenite |
Arkansas |
0 |
Ritter 154, 19 D |
| GRD0451S0 |
Micaceous Extrusive
|
original description: biotite, orthoclase, nepheline, analcime (IUGS classification is minette). |
Arkansas |
0 |
Ritter 154, 16 O |
| GRD0452S0 |
Micaceous Extrusive
|
original description: lamproite, part of Prairie Creek Instrusion. serpentinized olivine, mica (phlogopite?) |
Arkansas |
0 |
Ritter 154, 16 O |
| GRD0452S1 |
Micaceous Extrusive
|
original description: lamproite, part of Prairie Creek Instrusion. serpentinized olivine, mica (phlogopite?) |
Arkansas |
0 |
Ritter 154, 20 I |
| GRD0453S0 |
Gabbro
|
Olivine Gabbro, moderately altered |
Pacific Ocean |
0 |
Ritter 154, 16 C |
| GRD0454S0 |
Gabbro
|
moderately altered |
Pacific Ocean |
0 |
Ritter 154, 16 C |
| GRD0455S0 |
Ultramafic Extrusive
|
Perifotitic komatiite flow. Chilled and fractured top of flow. A1 |
Canada |
0 |
Ritter 154, 29 K |
| GRD0455S1 |
Ultramafic Extrusive
|
Peridotitic komatiite flow. Chilled and fractured top of flow. A1 |
Canada |
0 |
Ritter 154, 29 K |
| GRD0456S0 |
Ultramafic Extrusive
|
Fine spinifex zone. A2 |
Canada |
2 |
Ritter 154, 16 L |
| GRD0457S0 |
Ultramafic Extrusive
|
Coarse spinifex zone. A2 |
Canada |
0 |
Ritter 154, 16 L |
| GRD0458S0 |
Ultramafic Extrusive
|
Foliated spinifex zone. B1 |
Canada |
0 |
Ritter 154, 29 K |
| GRD0459S0 |
Ultramafic Extrusive
|
Cumulate zone. B2 |
Canada |
0 |
Ritter 154, 16 L |
| GRD0459S1 |
Ultramafic Extrusive
|
Cumulate zone. B2 |
Canada |
0 |
Ritter 154, 16 L |
| GRD045AS0 |
Peridotite
|
Knobby peridotite . B3 |
Canada |
0 |
Ritter 154, 29 K |
| GRD045AS1 |
Peridotite
|
Knobby peridotite. B3 |
Canada |
0 |
Ritter 154, 29 K |
| GRD045BS0 |
Ultramafic Extrusive
|
Chilled base of flow . B4 |
Canada |
0 |
Ritter 154, 29 K |
| GRD045BS1 |
Ultramafic Extrusive
|
Chilled base of flow. B4 |
Canada |
0 |
Ritter 154, 29 K |
| GRD045CS0 |
Ultramafic Extrusive
|
Peridotitic komatiite flow(no spinifex zone). Chilled and fractured top of flow. A |
Canada |
0 |
Ritter 154, 29 K |
| GRD045CS1 |
Ultramafic Extrusive
|
Peridotitic komatiite flow(no spinifex zone). Chilled and fractured top of flow. A |
Canada |
0 |
Ritter 154, 29 K |
| GRD045DS0 |
Peridotite
|
Peridotite B |
Canada |
0 |
Ritter 154, 29 K |
| GRD045DS1 |
Peridotite
|
Peridotite B |
Canada |
0 |
Ritter 154, 29 K |
| GRD045ES0 |
Ultramafic Extrusive
|
Olivine spinifex zone at top of Freds Flow. The actual contact with overlying flows is not exposed. This zone estimated to be about 8 to 10 feet thick in the section sampled. |
Canada |
2 |
Ritter 154, 29 K |
| GRD045FS0 |
Ultramafic Extrusive
|
Pyroxene spinifex zone below olivine spinifex zone. This zone is much thicker than the olivine spinifex zone. |
Canada |
0 |
Ritter 154, 29 K |
| GRD045FS1 |
Ultramafic Extrusive
|
Pyroxene spinifex zone below olivine spinifex zone. This zone is much thicker than the olivine spinifex zone. |
Canada |
0 |
Ritter 154, 29 K |
| GRD045GS0 |
Ultramafic Extrusive
|
Transition pyroxene spinifex, pyroxene more randomly oriented. This represents the lower part of the pyroxene spinifex zone. |
Canada |
0 |
Ritter 154, 16 L |
| GRD045GS1 |
Ultramafic Extrusive
|
Transition pyroxene spinifex, pyroxene more randomly oriented. This represents the lower part of the pyroxene spinifex zone. |
Canada |
0 |
Ritter 154, 29 K |
