| GRD02BMS0 |
Sedimentary Ore Deposits
|
Fe-Mn mineralization in Devonian dolomite. |
New Mexico |
0 |
Ritter 154, 24 K |
| GRD02BMS1 |
Sedimentary Ore Deposits
|
Fe-Mn mineralization in Devonian dolomite. |
New Mexico |
0 |
Ritter 154, 14 Q |
| GRD02BMS2 |
Sedimentary Ore Deposits
|
Fe-Mn mineralization in Devonian dolomite. |
New Mexico |
0 |
Ritter 154, 14 R |
| GRD02BMS3 |
Sedimentary Ore Deposits
|
Fe-Mn mineralization in Devonian dolomite. |
New Mexico |
0 |
Ritter 154, 24 K |
| GRD02BNS0 |
Dropstone
|
Grey mudstone with rounded quartzite dropstones. Sample is capped by siltstone. Original label: Varved sediment with isolated pebbles. 1959. |
Brazil |
0 |
Ritter 154, 17 Q |
| GRD02BOS0 |
Anorthosite
|
Light grey-blue, euhedral plagioclase phenocrysts with interstitial pyroxene and magnetite (minor). Original label: Anorthosite. |
California |
0 |
Ritter 154, 16 F |
| GRD02BPS0 |
Sandstone
|
Fine-grained sandstone. Multiple thin sections. The thins sections have slightly different crystal abundances. |
|
4 |
Ritter 154, 17 G |
| GRD02BQS0 |
Chert
|
Purple and red chert with green coloration along fractures. Beautiful conchoidal fracture. 7 thin sectons, all similar to one another with abundant radiolarians. Good teaching sample. Billets. Original label: Chert. Franciscan Formation. |
California |
7 |
Ritter 154, 18 N |
| GRD02BRS0 |
Non-layered Gneiss
|
Quartz-muscovite-biotite gniess. Poorly developed lineations of biotite. |
Alpine |
2 |
Ritter 154, 24 A |
| GRD02BSS0 |
Folds
|
Fine-grained muscovite schist. Slight folds and crenulations. Slickensides? |
Alps |
0 |
Ritter 154, 14 P |
| GRD02BTS0 |
Amphibolite
|
Abundant dark green amphibole with white interstitial mineral. Slight foliation. |
|
2 |
Ritter 154, 14 G |
| GRD02BUS0 |
Calcsilicate (Skarn)
|
Large calcite crystals with nice cleavage. Small dark and light green pyroxene crystals. |
|
1 |
Ritter 154, 14 K |
| GRD02BVS0 |
Phyllite
|
Chlorite phyllite. Black veinlet. Original description: metagreywacke. |
California |
1 |
Ritter 154, 14 E |
| GRD02BWS0 |
Folds
|
S-folded gneiss. Phlogopite-biotite-quartz-pyrite (trace). Original description: folded phologopite gneiss. |
|
0 |
Ritter 154, 14 P |
| GRD02BXS0 |
Folds
|
Fine-grained gneiss with ptygmatic folds. Very nice example of folds. |
|
0 |
Ritter 154, 14 P |
| GRD02BYS0 |
Ga-bearing Schist
|
Muscovite-quartz-amphibole-garnet-chlorite-pyrite- Fe-oxide (trace). Porphyroblasts of garnets and quartz. Nice sample. |
|
0 |
Ritter 154, 24 C |
| GRD02BZS0 |
Layered Gneiss
|
Phlogopite-biotite (?)-quartz gneiss. Thin bands of phyllosilicates and quartz. |
|
0 |
Ritter 154, 24 A |
| GRD02C0S0 |
Quartzofeldspathic
|
Hornblende-quartz-phologopite. Original label: Grenville Quartzite. |
New York |
0 |
Ritter 154, 24 F |
| GRD02C1S0 |
Chert
|
Black chert with some choncoidal fracture. |
|
0 |
Ritter 154, 22 B |
| GRD02C2S0 |
Calcsilicate (Skarn)
|
Large, beautiful sample. Epidote-potassium feldspar-calcite. Original label: Museum quality epidote. |
Unknown |
0 |
Ritter 154, 14 K |
| GRD02C3S0 |
Relict Textures
|
Rounded schist and smaller angular black flecks in a very fine-grained greenish/black silicic matrix. Original label: pseudo-tachylite. |
Switzerland |
0 |
Ritter 154, 24 H |
| GRD02C4S0 |
Quartzite
|
Small, unremarkable sample of quartzite. Faint bedding. Light grey. Not cut. |
France |
0 |
Camp Elliott |
| GRD02C5S0 |
Chalk
|
Small, white, powdery limestone. Poorly consolidated. Cut. |
France |
0 |
Camp Elliott |
| GRD02C6S0 |
Chalk
|
Small, white, powdery limestone. Some Fe-stains. Poorly consolidated. Cut. |
France |
0 |
Camp Elliott |
| GRD02C7S0 |
Chalk
|
Small, white, powdery limestone. Poorly consolidated. Cut. |
France |
0 |
Camp Elliott |
| GRD02C8S0 |
Chalk
|
Small, white, powdery limestone. Some green stains (Cu minerals?). Poorly consolidated. Cut. |
France |
0 |
Camp Elliott |
| GRD02C9S0 |
Chalk
|
Decent-sized, white, powdery limestone. Poorly consolidated. Cut. |
France |
0 |
Camp Elliott |
| GRD02CAS0 |
Chalk
|
Decent-sized sample. Gritty. Yellow with a few grey spots. Minor amount of clear, crystalline calcite. |
France |
0 |
Camp Elliott |
| GRD02CBS0 |
Quartz Sandstone
|
White sandstone with black (Fe-Mn?) rind. Decent-sized sample. Medium-grained. Cut. |
France |
0 |
Camp Elliott |
| GRD02CCS0 |
Micritic Limestone
|
Decent-sized, fine-grained grey limestone with faint yellow stains. Unremarkable. Cut. |
France |
0 |
Camp Elliott |
