Man Made Material (Simulated Mineral)

Sandstone

Arenite (primarily SiO2)

Sandstone (Picture Sandstone)

Arenite (primarily SiO2)

Chert (Jasper/Flint variety)

Microcrystalline quartz (SiO2)

Fluorite

Calcium Fluoride (CaF2)

Jasper

Silicon Dioxide (SiO2)

Asphalt (Bituminous pavement fragment)

Artificial conglomerate / Bitumen-Aggregate mixture

Jasper

Silicon dioxide (SiO2) with impurities

Bauxite

Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)

Biotite (Mica)

Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)

Milky Quartz

Silicon Dioxide (SiO2)

Sandstone

Arenite (primarily SiO2)

Potassium-Rich Silicate Clay (inferred from biological context)

Phyllosilicate group (likely Illite or Smectite within surrounding soil substrate)

Bumblebee Jasper

Calcite-bearing Volcanic Tuff containing Sulfur and Arsenic (Orpiment/Realgar)

Limonite (Iron Ore)

Limonite (an amorphous mixture of hydrated iron oxides, primarily FeO(OH)·nH2O)

Fossil Shark Tooth

Carcharodon sp. (likely Otodus or similar Lamniformes order)

Basalt (Vesicular)

Extrusive mafic igneous rock; primarily (Mg, Fe)2SiO4 (Olivine), CaAl2Si2O8 (Plagioclase Feldspar), and Pyroxene

Sandstone

Clastic Sedimentary Rock (composed mostly of quartz, SiO2)

Sandstone (Beach Pebble)

Clastic sedimentary rock (primarily Quartz and Feldspar)

Sandstone (Ferruginous)

Arenite with Iron Oxide cement

Red Sandstone

Arenite (Ferruginous Sandstone)

Basalt with Epidote (Greenstone)

Epidote-bearing Metabasalt

Sandstone

Clastic sedimentary rock (primarily SiO2)

Olivine (Peridot)

Olivine Group (Mg,Fe)2SiO4

Moss Agate / Chalcedony

Silicon Dioxide (SiO2)

Chrysocolla in Jasper (Chryso-Jasper)

Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O (Chrysocolla) + SiO2 (Jasper)

Bicolor Quartz Pebble

Silicon Dioxide (SiO2) with mineral inclusions

Cubic Zirconia (Diamond Simulant)

Zirconium Dioxide (ZrO2)

Limonite

FeO(OH)·nH2O (Hydrated iron oxide)

Rose Quartz (likely carved)

Rose Quartz (SiO2)

Agatized Fossil (Druzy Agate)

Silicon Dioxide (SiO2) replacing organic matter

Obsidian

Volcanic Glass (70-75% SiO2 with MgO and Fe3O4)

Chert (Flint)

Chert (Silicon Dioxide, SiO2)

Scoria

Scoria (a vesicular basalt or andesite)

Sandstone

Sandstone (Sedimentary rock composed of silicate grains)

Red Sandstone (Iron-Rich)

Arenite (Fe2O3)

Basalt with Quartz/Feldspar Inclusions

Amygdaloidal or Porphyritic Mafic Volcanic Rock with Siliceous Veining

Sandstone (Red Sandstone / River Stone)

Arenite (composed primarily of Quartz, SiO2, with Iron Oxide cementation)

Sandstone (likely Quartz Sandstone)

Arenite (composed primarily of SiO2)

Sandstone (with manganese staining)

Clastic sedimentary rock (primarily SiO2)

Gold and Silver (Metal Components of an Antique Pocket Watch)

Native Gold (Au) and Native Silver (Ag)

Olivine in Basalt matrix

Peridotite (Mg, Fe)2SiO4

Petrified Wood

Silicified Wood (primarily Chalcedony or Quartz, SiO2)