Anthropogenic Specimen (Man Made Material)

Bauxite

Bauxite (mixture of Gibbiste Al(OH)3, Boehmite ̳-AlO(OH), and Diaspore ́-AlO(OH))

Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Diorite

Diorite

Peridotite (Pyroxenite/Serpentinized Dunite)

Ultramafic Rock (consisting primarily of Olivine and Pyroxene)

Banded Flint / Chert

Silicon Dioxide (SiO2)

Quartzite

Quartzite (SiO2)

Conglomerate

Conglomerate (Detrital sedimentary rock)

Serpentine

Antigorite / Lizardite / Chrysotile mix; (Mg, Fe)3Si2O5(OH)4

Mica Schist

Mica Schist (primarily Muscovite or Biotite sheet silicates)

Ferruginous Sandstone

Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)

Rough Diamond

Diamond (pure Carbon, C)

Black Jasper (Black Stone / River Pebble)

Silicon Dioxide (SiO₂), Opaque variety of Chalcedony

Sodalite

Sodalite (Sodium Aluminum Silicate Chloride), Na8(Al6Si6O24)Cl2

Chert (includes Flint & Jasper)

Chert (Siliceous sedimentary rock, chemical formula SiO2)

Chondrite Meteorite

Ordinary Chondrite (Fe-Ni alloy, Olivine, Pyroxene)

Chert (varieties: Flint or Chalcedony)

Microcrystalline Quartz (SiO2)

Chert (and associated Flint)

Silicon Dioxide (SiO2)

Andesite

Andesite (Intermediate Extrusive Volcanic Rock)

Serpentine

Serpentinite (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

Red Sandstone

Arenite (primarily Quartz with Hematite cement)

Orange Calcite

Calcium Carbonate (CaCO3)

Jasper

Jasper (Silicon Dioxide, SiO2)

Conglomerate

Conglomerate (clastic sedimentary rock)

Siltstone/Sandstone (possibly Wonderstone or Picture Sandstone)

Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide inclusions)

Basalt

Extrusive mafic igneous rock

Sandstone

Arenite (primarily Quartz, SiO2)

Mica Schist

Schist (Muscovite/Biotite Schist)

Diorite (Salt and Pepper Rock)

Phaneritic plutonic igneous rock (sodium-rich plagioclase feldspar and hornblende)

Aragonite Star Cluster

Aragonite (Calcium Carbonate - CaCO3)

Petrified Wood

Silicified Wood (SiO2 permineralization)

Jasper and Quartz River Pebble

Silicon Dioxide (SiO2) with impurities

Unakite

Epidotized Granite (SiO2, KAlSi3O8, Ca2(Al, Fe)3(SiO4)3(OH))

Sandstone

Arenite (SiO2 based with various mineral cements)

Chert (Chert / Flint)

Silicon dioxide (SiO2) - Microcrystalline quartz

Quartzite

Quartzite (primarily SiO2)

Coquina / Shelly Limestone

Coquina (calcium carbonate, CaCO3)

Basalt (Vesicular)

Mafic Volcanic Rock (rich in Magnesium and Iron)

Sandstone

Arenite (Siliclastic sedimentary rock, primarily SiO2)

Sandstone (Quartz Sandstone)

Arenite (primarily SiO2)

Orange Quartzite (Tumbled Beach Pebble)

Quartzite (primarily SiO2)

Quartzite

Quartzite (SiO2)

Moss Agate

Silicon Dioxide (SiO2) with inclusions