University of Northern Iowa

Petrology

The study of the origin, chemistry, distribution, and structure of rocks.

Displaying 901 - 1000 of 1437
Cat. # Name Description
901 00.3.10.165.0005 Chalk None
902 00.18.1044 Sand Foramineferal sand.
903 00.18.1049 Silt Material of the shallow sea bottom.
904 00.18.1119 Silt Shallow sea bottom.
905 00.2.4.13.0013 Lead None
906 00.3.10.167.0002 Limestone Travertine from Galena limestone.
907 00.3.10.188.0010 Limestone, fossiliferous Fossiliferous limestone marble.
908 00.3.10.190.0001 Concretion Argille, calcareous concretion.
909 00.3.10.190.0004 Limestone Crystalline limestone with chent Kinderhook.
910 00.3.10.190.3 Limestone Crinoidal limestone.
911 00.3.10.192.0007 Sandstone Redbed material; calciferous.
912 00.3.11.244.0011 Pitchstone Var. Pitchstone.
913 00.3.11.244.0012 Obsidian None
914 00.3.11.244.0013 Obsidian None
915 00.3.11.257.0002 Diabase Coarsely disintegrated.
916 00.3.11.257.0003 Diorite None
917 00.3.11.257.0004 Gabbro None
918 00.3.11.257.0006 Dolerite None
919 00.3.11.257.0007 Diorite Black mineral hornblende diorite.
920 00.3.11.257.0009 Dolerite None
921 00.3.11.273.0005 Limestone Lithographic.
922 00.3.11.273.0009 Limestone Lithographic limestone.
923 00.3.12.513.0012 Limestone None
924 00.3.14.697.0012 Septarian Concretion in which cracks developed by shringage and later filled with calicte or some other material.
925 00.3.14.697.0013 Septarian None
926 00.3.14.697.0015 Septarian Cone-in-cone, formed in clay.
927 00.3.14.697.0017 Limestone Carvoniferous limestone with veins of calcite and dogtooth spar.
928 00.3.14.697.0018 Gypsum Weathered boulder.
929 00.3.14.697.0025 Coquina Coquina limestone (true shell).
930 00.3.14.697.0026 Concretion Ferruginous.
931 00.3.14.697.19 Travertine Compact calcareous deposit made from spring waters from wind cave.
932 00.3.14.697.8 Limestone Limestone deposit with sand grains diffused throughout.
933 00.3.15.289.0004 Sandstone Jointed structure approaching slaty cleveage.
934 00.3.15.289.0007 Structures, joint Jointed structure. Sandstone with concretinary structure.
935 00.3.15.297.0012 Flint Concretion; water worn.
936 00.3.15.297.11 Iron Iron nodule made up of 8 spheres
937 00.3.15.301.0010 Conglomerate Composed of hule hop.
938 00.3.15.301.0011 Sand, volcanic In jar.
939 00.3.15.302.0001 Cleavage Slaty.
940 00.3.15.302.0002 Diabase Weathered.
941 00.3.15.302.0004 Cone-in-cone None
942 00.3.15.302.0005 Structure, jointed None
943 00.3.15.302.0006 Cone-in-cone None
944 00.3.15.313.0003 Limestone Glaciated limestone.
945 00.3.15.313.0005 Gravel None
946 00.3.15.313.0009 Sandstone St. Peter's sandstone.
947 00.3.15.313.0010 Stalactite, halite None
948 00.3.15.324.0007 Conglomerate None
949 00.3.15.330.0004 Limestone Coarsely crystalline limestone.
950 00.3.15.330.0006 Limestone Dolomitic.
951 00.3.15.332.0012 Limestone Fossiliferous limestone.
952 00.3.15.336.0006 Clay None
953 00.3.15.336.0007 Loess None
954 00.3.15.337.0001 Loess, Kindchen None
955 00.3.15.337.0003 Loess, Kindchen None
956 00.3.15.337.0008 Loess Pipe from loess-like material above l.s.
957 00.3.15.338.0004 Sandstone Granular limestone.
958 00.3.15.338.0009 Sandstone Calcareous sandstone.
959 00.3.15.340.0013 Sand Green sand.
960 00.3.15.341.0012 Sand Oolitic.
961 00.3.15.341.0013 Sand Coral sand.
962 00.3.15.341.0015 Dust, volcanic None
963 00.3.15.341.0019 Sand None
964 00.3.15.342.0002 Sand Aftonian.
965 00.3.15.349.0001 Quartz Weathered patches.
966 00.3.15.349.0002 Sandstone None
967 00.3.15.349.0007 Limestone Dolomitic limestone.
968 00.3.15.351.0002 Sandstone Transition from St,. Croix sandstone to Oneota limestone.
969 00.3.15.351.0003 Sandstone New Richmond sandstone.
970 00.3.23.699.6 Geode Geode in rectangular rock.
971 00.3.23.699.8 Petrified wood Petrified log
972 00.3.23.704.0001 Chalcedony On coral.
973 00.3.23.707.0001 Deposit, cave None
974 00.3.23.707.0002 Deposit, cave None
975 00.3.23.707.0003 Deposit, cave None
976 00.3.23.707.0005 Deposit, cave None
977 00.3.23.707.0007 Deposit, cave None
978 00.3.23.707.0008 Deposit, cave None
979 00.3.23.707.0009 Deposit, cave None
980 00.3.23.707.0010 Deposit, cave None
981 00.3.23.707.0011 Deposit, cave Includes a. and b.
982 00.3.23.707.0014 Pearls, cave None
983 00.3.23.707.0015 Deposit, cave None
984 00.3.23.707.0017 Deposit, cave None
985 00.3.23.707.0018 Deposit, cave None
986 00.3.23.707.0023 Deposit, cave None
987 00.3.23.707.0025 Deposit, cave None
988 00.3.23.707.0027 Deposit, cave None
989 00.3.23.707.0032 Deposit, cave None
990 00.3.23.707.0033 Deposit, cave None
991 00.3.23.707.0042 Deposit, cave None
992 00.3.23.707.0043 Stalactite None
993 00.3.23.707.0046 Deposit, cave None
994 00.3.23.709.0007 Cone-in-cone None
995 00.3.3.650.0001 Fluorspar None
996 00.3.3.672.0007 Talc None
997 00.3.4.2.0003 Gold None
998 00.3.4.4.0002 Silver None
999 00.3.4.4.0013 Silver None
1000 00.3.4.42.0005 Copper None
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