Man Made Rock (Sedimentary Analogue)

Ironstone Concretion

Ferruginous Sandstone / Iron-rich Sedimentary Rock

Yellow Ocherous Siltstone (Limonitic Shale)

Limonitic Siltstone / Goethite-rich Sedimentary Rock

Bivalve Fossil (Clam/Mollusk)

Class: Bivalvia (Order: Veneroida), Calcium Carbonate (CaCO3)

Limonite Concretion (Ironstone)

Limonite / Goethite (FeO(OH)·nH2O)

Sandstone (Ferruginous)

Arenite (composed primarily of SiO2 with Fe2O3 cement)

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Garnet Schist

Garnet-bearing Mica Schist (variety of compositions, often Al2SiO5 with X3Y2(SiO4)3)

Phyllite

Phyllite (Foliated metamorphic rock)

Chert (Tan/Grey variety)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Yellow Jasper

Silicon Dioxide (SiO2) with iron inclusions

Geode (unopened)

Chert / Chalcedony Geode (SiO2)

Sandstone (Ferruginous)

Arenite with Iron Oxide cement (SiO2 + Fe2O3)

Ironstone Concretion / Goethite Nodules

Ironstone (composed primarily of Goethite FeO(OH) and Limonite)

Yellow Jasper

Silicon Dioxide (SiO2) with iron inclusions

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Geode Nodules / Agate Chert

Silicon Dioxide (SiO2)

Chert (varieties include Flint and Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (specifically Flint or Jasper-Chert)

Silicon Dioxide (SiO2)

Picture Jasper

Silicon dioxide (SiO2)

Kambaba Jasper (Crocodile Jasper)

Stromatolitic Rhyolite/Jasper (SiO2)

Chert (specifically Jasper/Brown Chert)

Silicon Dioxide (SiO2)

Chert (Flint Nobule)

Silicon Dioxide (SiO2)

Chert (Jasper and Chalcedony)

Silicon Dioxide (SiO2)

Siltstone/Sandstone (possibly Wonderstone or Picture Sandstone)

Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide inclusions)

Sandstone (with potential Concretion or Fossil fragment)

Arenite (primarily SiO2)

Chert (Yellow Jasper variant)

Silicon Dioxide (SiO2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Banded Chert (Agate/Jasper blend)

Microcrystalline Quartz (SiO2)

Red Jasper

Jasper (Silicon Dioxide, SiO2 with Iron Oxide impurities)

Petrified Wood

Silicified Wood (primarily Quartz/SiO2)

Phyllite

Phyllite (Intermediate grade metamorphic rock)

Gneiss

Gneiss (High-grade metamorphic rock)

Quartz Druzy Geode Fragment

Silicon Dioxide (SiO2)

Sandstone

Arenite (SiO2 based)

Sandstone

Arenite (SiO2 based)

Chert (Nodule)

Microcrystalline quartz (SiO2)

Banded River Cobble with Mafic Dike

Hydrothermally altered Graywacke or Sandstone with Mafic Intrusion

Red Sandstone (with possible iron oxide staining)

Sandstone (primarily Quartz with Hematite/Goethite cement)

Garnet in Schist (Garnetiferous Micaceous Schist)

Almandine Garnet, Fe3Al2(SiO4)3

Sand Dollar Fossil (Echinoidea)

Class Echinoidea (likely order Clypeasteroida), CaCO3 (Calcite)

Gneiss (Gneissic Granite)

Gneiss

Sparkling Druzy Quartz on Matrix

Silicon Dioxide (SiO2) with iron oxide inclusions