University of Northern Iowa

Petrology

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

Displaying 601 - 700 of 1437
Cat. # Name Description
601 1970.47.1.0444 Galena Unlabelled.
602 00.3.15.306.0002 Bournonite Centhorhombic.
603 00.3.4.48.0010 Silver None
604 1970.002 Conglomerate Color: BK,BR,WH
605 00.3.6.205.0008 Ore Copper.
606 00.3.11.242.0006 Gneiss None
607 1970.35.8.0006 Rock None
608 00.3.13.536.0010 Shale, oil None
609 00.3.3.680.0002 Chalk None
610 1991.38.0010 Taconite Aluminum ore. Color: PK
611 00.3.9.59.0007 Concretion, limonite Filled with a calcitic deposit.
612 1970.47.4.33.0001 Ore Containing gold, silver, zinc and pyrites.
613 00.3.15.328.0003 Breccia None
614 00.3.5.106.0007 Quartz, geode None
615 00.3.10.152.0001 Geode, calcite None
616 00.3.11.260.0002 Melaphyr None
617 1986.16.0007 Limestone None
618 00.3.23.699.0005 Geode Geode in square rock.
619 00.3.6.213.0003 Coal Anthracite.
620 00.3.11.247.0005 Tufa, volcanic None
621 1970.47.1.0259 Rock Unlabelled. Color: GR
622 00.3.15.295.0008 Iron concretion Clay center.
623 00.3.4.21.0005 Lead and zinc Galena-Blende and pyrite.
624 1991.38.2.0009 Chalk Impure. Color: WH/GY
625 00.3.5.140.0002 Sand Crystals.
626 00.3.10.183.0005 Marble None
627 11.11.11.0903 Rock Glacial erratic, fine grain igneous rock, faceted
628 00.3.11.283.0004 Nephrite Amphibole. Jade.
629 00.3.3.648.0001 Ore, silver None
630 1990.20.0011 Geode, amethyst Sphere.
631 00.3.6.236.0001 Marble Pentelic.
632 1970.47.1.0445 Galena Unlabelled.
633 00.3.15.306.0003 Fulgarite None
634 00.3.15.310.0003 Mudstone Glaciated.
635 00.3.4.5.0001 Silver None
636 1972.0035 Rock Crystal-like appearance on one side. Color: GY
637 00.3.6.205.0012 Ore Copper.
638 00.3.11.242.0011 Gneiss None
639 1970.35.8.0007 Rock None
640 00.3.13.539.0004 Limestone None
641 00.3.3.681.0001 Geyserite Geyser eggs of calcite.
642 1991.38.1.0001 Sandstone Sandstone - coal cap. Color: TN
643 00.3.9.61.0007 Pyroxenite Or Hornblendite.
644 00.3.9.62.0002 Bauxite None
645 1970.47.4.33.0002 Ore, gold Containing gold, silver, zinc and pyrites.
646 00.3.15.328.0006 Limestone Carbonate of lime breccia from bluffs at bend of Cedar River west of Osage.
647 00.3.5.106.0014 Quartz, rose None
648 00.3.10.152.0003 Geode, calcite None
649 00.3.11.260.0003 Limestone Travertine.
650 1986.16.0019 Limestone, lithographic None
651 00.3.6.213.0006 Coal Anthracite.
652 00.3.11.247.0006 Volcanic bomb None
653 1970.47.1.0267 Clevelandite None
654 00.3.15.295.0011 Concretion Fragments of iron concretions.
655 00.3.4.21.0007 Silver and lead
656 1992.26.0002 Turquoise A cut from a larger piece.
657 00.3.15.339.0002 Shale None
658 00.3.10.183.0006 Marble None
659 00.3.11.283.0007 Jade Amphibole, nephrite.
660 00.3.3.648.0002 Ore, silver Native silver 90%.
661 1990.20.0012 Chert Mahogany obsidian. Sphere.
662 00.3.23.708.0004 Sandstone Medina sandstone.
663 00.3.6.236.0006 Marble Fossiliferous.
664 1970.47.1.0446 Galena Unlabelled.
665 00.3.15.306.0004 Lignite None
666 00.3.15.311.0001 Rock Lamination developed by weathering.
667 00.3.4.5.0003 Silver None
668 1973.0031 Pegmatite Dike vein in a biotite granite. Glacial erratic. Oblong with flat bottom.
669 00.3.6.205.0013 Copper Copper, malacite, azurite, cuprite.
670 00.3.11.242.0012 Gneiss Orbicular granite.
671 1970.35.8.0008 Rock None
672 00.3.13.539.0005 Boulder Faceted and striated glacial basalt boulder.
673 00.3.3.681.0003 Limestone Cale sinter.
674 1991.38.1.00011 Lime Type used for cement making. Color: GY-WH
675 00.3.9.62.0010 Porphyry, hornblende Hornblende, diabase porphyry.
676 1970.47.4.42.0001 Ore Silver and lead bearing.
677 00.3.15.328.0007 Limestone Shell breccia and semioolitic limestone..
678 00.3.5.109.0004 Geode None
679 00.3.10.153.0001 Geode, calcite None
680 00.3.11.260.0004 Marble None
681 1986.16.0061 Agate Flowering rose agate.
682 00.3.11.248.0004 Lava None
683 1970.47.1.0292 unk None
684 00.3.15.296.0001 Concretion Brown iron ore.
685 00.3.4.22.0011 Lead , silver?
686 00.3.15.339.0004 Shale None
687 00.3.10.183.0007 Marble None
688 00.3.11.284.0001 Conglomerate Calcareous.
689 00.3.3.648.0003 Ore, silver Black silver.
690 1990.20.0013 Obsidian Pink. Sphere.
691 00.3.23.709.0001 Anorthosite None
692 00.3.6.237.0001 Limestone Oolitic limestone.
693 1970.47.1.0447 Galena Unlabelled.
694 00.3.15.306.0005 Concretion, hematite None
695 00.3.15.312.0003 Dendrites On chert.
696 00.3.4.5.0004 Silver None
697 1973.0032 Porphyry, dacite Dactite porphyry.
698 00.3.15.350.0001 Sandstone None
699 00.3.6.206.0001 Copper Roasted copper ore.
700 00.3.11.242.0013 Gneiss Orbicular granite.
CSV