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IGSN Sample Type Notes Location Number Thin Sections Storage Location
GRD00PSS0 Gypsum Original label: Banded reddish gypsum; near end of slope, low in exposed section. Coll. No. 86d, Feb. 1951. New Mexico 1 Ritter 154, 17 M
GRD00PTS0 Gypsum Original label: Varved gypsum. Castile formation. Permian. New Mexico 1 Ritter 154, 17 M
GRD00PUS0 Halite Original label: Part of a drilled salt core. Anith field. Colorado 1 Ritter 154, 17 M
GRD00PVS0 Halite Original label: Salt, darker, less-pure bands, depth 1600 feet. Coll. No. 151. 1951, Ranch House Salt Co. Texas 1 Ritter 154, 17 M
GRD00PWS0 Gypsum Sample scratched. Original label: Gypsum var. alabaster, Coll. No. 96. EN 126 or 129. Italy 1 Ritter 154, 17 M
GRD00PXS0 Volcaniclastic Sediment Original label: Skyline Tuff is about 15 million years. California 0 Ritter 154, 17 N
GRD00PYS0 Volcaniclastic Sediment Dated Tuff at 14.8 Ma, Barstow formation, upper member. California 0 Ritter 154, 22 H
GRD00PZS0 Volcaniclastic Sediment Barstow formation (top of middle member) California 0 Camp Elliott
GRD00Q0S0 Volcaniclastic Sediment Original label: Edge of pillow volcanic, March 1963. California 1 Ritter 154, 17 N
GRD00Q1S0 Volcaniclastic Sediment Clasts are mostly of volcanic origin. Blue copper staining in the matrix. 1 Ritter 154, 17 N
GRD00Q2S0 Volcaniclastic Sediment Original label: Andesite mud flow. Dr Durrells area. California 1 Ritter 154, 17 N
GRD00Q3S0 Volcaniclastic Sediment Original label: Volcanic sandstone. Underlies reef dolomites. Coll. No. I-1. Italy 1 Ritter 154, 17 N
GRD00Q4S0 Volcaniclastic Sediment Original label: Tuffaceous (?) sandstone, Miocene (?), Southwest Colorado. Colorado 1 Ritter 154, 17 N
GRD00Q5S0 Volcaniclastic Sediment Original label: Silicified Tuff. California 1 Ritter 154, 17 N
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
GRD00QCS0 Hardground Hardground, Late Pliensb. 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
GRD00QGS0 Ripples red fine sandstone with ripples, Hakatai Fm., two samples Arizona 0 Ritter 154, 17 Q
GRD00QHS0 Ripples Original label: ripple marks in sandstone, Vasquez Fm., Miocene, collected near rock crusher. California 0 Ritter 154, 17 Q
GRD00QIS0 Varves Green varved tillite. Gowganda Fm. 2.2 Ga. Proterozoic Michigan 0 Ritter 154, 17 Q
GRD00QJS0 Sandstone Original label: Rippled Sandstone with trilobites, Latham Shale Mbr., Cararra Formation. California 0 Ritter 154, 17 Q
GRD00QKS0 Mud Cracks Red mudstone with thin mudcracks. Large sample. Wyoming 0 Ritter 154, 22 M
GRD00QKS1 Mud Cracks Large sample of red mudstone with thin mud cracks. Wyoming 0 Ritter 154, 22 L
GRD00QKS2 Mud Cracks Small sample of red mudstone with thin mudcracks. Wyoming 0 Ritter 154, 22 M