Petrology

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

Displaying 801 - 900 of 1437
Cat. # Name Description
801 00.3.15.319.0007 Gumbo, burnt None
802 00.2.9.92.0002 Psilomelane Ore--oxides of manganese.
803 00.3.15.696.0012 Septarian Concretionary. "Turtlestone".
804 1989.48.0003 Lava Color: BK
805 00.3.23.716.0017 Quartzite None
806 00.3.11.263.0002 Tuff Rhyolite tuff.
807 00.3.6.205.0007 Copper None
808 00.3.11.246.0007 Schist Hornblend schist.
809 2006.15.0047 Obsidian Very small piece of obsidian, uneven ridges, resembles glass, dull to vitreous luster, 5-6 on hardness scale Color: Black
810 00.3.15.301.0007 Schist Crumpled laminae.
811 1970.47.1.0468 Chert None
812 00.3.9.58.0006 Septarian, limonite None
813 00.3.15.334.0005 Quartzite None
814 00.3.10.180.0010 Limestone None
815 1990.53.0151 unk None
816 00.3.3.676.0001 Serpentine None
817 00.3.13.512.0002 Soil Soil from "The Merse", a group of farms famous for their fertility, adjoining Duns, Scotland.
818 1970.47.1.0001 Rock None
819 00.3.6.213.0002 Coal Anthracite.
820 00.3.11.255.0009 Shale None
821 00.3.4.8.0011 Silver Hard carbonate ore.
822 1966.0017 Rock Large porous brown and white crystalline rock.
823 00.3.15.343.0009 Pebbles None
824 00.3.5.137.0013 Obsidian Var. Pitchstone.
825 00.3.11.242.0001 unk No specimen. Label: Broken stone from boulders used for macadamizing roads in Denmark.
826 1991.38.1.0015 Clay Painted cliffs Color: PK
827 00.3.4.2.0013 Gold None
828 1970.47.1.0418 Ore, zinc Zinc and copper.
829 00.3.6.235.0011 Jet Massive Color: BK
830 00.3.15.319.0008 Nodule, iron Broken.
831 00.2.9.92.0004 Psilomelane Ore; impure wad.
832 00.3.15.696.0013 Cone-in-cone None
833 1989.48.0005 Lava A-a lava. Color: BK
834 00.3.3.640.0009 Alabandite None
835 00.3.11.263.0003 Scoria Vesicular basaltic lava.
836 00.3.6.205.0008 Ore Copper.
837 00.3.11.246.0008 Andesite With Hornblende.
838 2006.15.0048 Obsidian Small in size piece of obsidian, one smoothed face, uneven ridges, wave like patterns, black with orange stripes, 5-6 on hardness scale, dull to vitreous luster Color: Black
839 00.3.4.48.0005 Chalcopyrite Chalcopyrite, galenite
840 1970.47.4.0006 Marble "France" marble.
841 00.3.9.59.0007 Concretion, limonite Filled with a calcitic deposit.
842 00.3.15.334.0006 Quartzite Sioux quartzite.
843 00.3.10.181.0002 Stalactite None
844 1990.53.0152 unk None
845 00.3.3.676.0003 Serpentine None
846 00.3.13.512.0006 Agate Okeye agate.
847 00.3.3.677.0001 Williamsite, serpentine None
848 00.3.13.512.0007 Shale Arenaceous.
849 1970.47.1.0025 Rock Unlabelled.
850 00.3.6.213.0003 Coal Anthracite.
851 00.3.5.102.0013 Quartz None
852 00.3.15.344.0006 Sandstone None
853 00.3.5.140.0002 Sand Crystals.
854 00.3.11.242.0005 unk None
855 1991.38.1.0016 Kaolin Color: WH
856 00.3.4.2.0014 Gold Gold ore galenite.
857 1970.47.1.0420 Zinc and copper ore None
858 00.3.6.236.0001 Marble Pentelic.
859 00.3.15.319.0009 Earth None
860 00.3.1.602.0001 Concretion Pyrite and sandstone.
861 00.3.15.696.0014 Granite Trap-granite contact.
862 1989.48.0006 Lava None
863 00.3.3.641.0007 Copper None
864 00.3.11.263.0004 Basalt None
865 00.3.6.205.0012 Ore Copper.
866 00.3.11.247.0001 Breccia Potomac breccia.
867 2006.15.0049 Obsidian Medium in size chunk of obsidian, two polished faces, black with reddish orange fusion on top, somewhat porrus in places, dull to vitreous luster, 5-6 on hardness scale Color: Black
868 00.3.4.48.0008 Silver None
869 1970.47.4.0007 Marble Cut and polished variegated and striped marble.
870 00.3.9.61.0007 Pyroxenite Or Hornblendite.
871 00.3.15.334.0013 Quartzite Sioux quartzite.
872 00.3.10.182.0001 Septarian Septarian. From drift folund in excavation for smoke stack at college. Shows mud cracks.
873 1990.53.0153 unk None
874 00.3.10.182.0002 Concretion, iron Mud cracked.
875 1990.53.0154 Oil lime None
876 00.3.3.680.0002 Chalk None
877 00.3.13.512.0011 Concretion Limestone spherical concretion
878 1970.47.1.0027 Rock Unlabelled.
879 00.3.6.213.0006 Coal Anthracite.
880 00.3.5.104.0010 Quartz, milky Massive
881 1970.002 Conglomerate Color: BK,BR,WH
882 00.3.15.345.0002 Sandstone Friable sandstone.
883 00.3.11.242.0006 Gneiss None
884 1991.38.1.0017 Coal Bituminous - resinous. Color: BK
885 00.3.4.2.0015 Gold Gold ore auriferous sulphurets in quartz.
886 00.3.15.290.0010 Slickensides Slickensides and hornblendic slate.
887 1970.47.1.0421 Zinc and copper ore None
888 00.3.6.236.0006 Marble Fossiliferous.
889 00.3.15.319.0010 Oolite Siliceous.
890 00.3.1.603.0001 Concretion None
891 00.3.15.696.0015 Stalactite None
892 1989.53.0031 Quartz, tiger eye None
893 00.3.3.644.0001 Ore, lead Lead, zinc and copper ore--Galena. Blende and chalcopyrite.
894 00.3.11.263.0005 Lava Basaltic.
895 00.3.6.205.0013 Copper Copper, malacite, azurite, cuprite.
896 00.3.11.247.0003 Basalt Var. Scoria
897 2006.15.0050 Obsidian Medium in size piece of obsidian, black with gray bands, uneven ridges, vitreous luster, 5-6 on hardness scale Color: Black
898 00.3.4.48.0010 Silver None
899 1970.47.4.0018 Brick Small, sample. Rocktex product.
900 00.3.9.62.0002 Bauxite None
CSV