Sedimentary Rock (Possibly Composed Of Various Minerals)

Dalmatian Stone

Peralkaline rhyolite with arfvedsonite (formerly incorrectly called Dalmatian Jasper)

Sandstone (Quartzite-rich)

Clastic sedimentary rock (primarily SiO2)

Sandstone (Weathered Pebble)

Arenite (primarily SiO2)

Limonite with Opal infusion

FeO(OH)·nH2O (Limonite) / SiO2·nH2O (Opal)

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Chert (Flint)

Silicon Dioxide (SiO2)

Chert (Jasper/Flint variety)

Microcrystalline silicon dioxide (SiO2)

Sandstone (Quartzose)

Arenite (SiO2 based)

Amygdaloidal Basalt

Amygdaloidal Basalt with Secondary Infilling (e.g., Agate, Quartz, or Zeolite)

Yellow Chalcedony

Chalcedony (a cryptocrystalline variety of Quartz, SiO₂)

Limestone with Calcite Veins

Calcium Carbonate (CaCO3)

Glauconitic Sandstone

Glauconitic Sandstone (contains (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)

Conglomerate

Conglomerate (Detrital sedimentary rock)

Conglomerate

Conglomerate (Detrital Sedimentary Rock)

Sandstone (Quartzose)

Arenite (primarily SiO2)

Jade

Jade can refer to two distinct minerals: Nephrite (a variety of the mineral actinolite, Ca2(Mg,Fe)5Si8O22(OH)2) and Jadeite (Na(Al,Fe3+)Si2O6). Based on the image, showing a relatively uniform green color and possibly slight translucence in bead form, it is very likely one of these, but determining which one from a photo is difficult without specific testing.

Diorite (River Cobble)

Intermediate plutonic igneous rock

Granite

Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)

Bryozoan Fossil

Phylum Bryozoa (commonly known as 'moss animals')

River Cobble (Basaltic/Andesitic)

Mafic Igneous Porphyritic Rock

Fluorite and Rose Quartz

Fluorite (CaF2), Rose Quartz (SiO2)

Schist

Mica Schist (predominantly Muscovite or Biotite)

Carnelian

Carnelian (Silicon Dioxide - SiO2)

Amygdaloidal Basalt with Zeolite/Quartz Infill

Amygdaloidal Basalt (Host: (Mg,Fe)2SiO4 / CaAl2Si2O8; Infill: SiO2 or Na2Al2Si3O10·2H2O)

Sandstone (Quartzose)

Arenite (primarily SiO2)

Red Jasper

Silicon Dioxide (SiO2) with iron oxide impurities

Gneiss (Metamorphic Cobble)

Gneiss

Amygdaloidal Basalt

Vesicular Basalt with secondary mineral infilling (commonly Zeolite, Calcite, or Quartz)

Chert (Jasper variation)

Chert (SiO2)

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide inclusions), SiO2

Almandine Garnet

Almandine (Fe3Al2Si3O12)

Ferromanganese Nodule

Polymetallic Nodule (composed primarily of MnO2 and Fe2O3)

Red Sandstone

Arenite (composed primarily of SiO2 with Fe2O3 cementation)

Ammonite Fossil

Ammonoidea (primarily composed of Calcite, CaCO3, or Pyrite)

Coquina / Fossiliferous Limestone

Coquina (composed primarily of Calcium Carbonate / CaCO3)

Siltstone

Siltstone (primarily composed of SiO2, Al2O3, and phyllosilicates)

Quartz Geode

Silicon Dioxide (SiO2) in a Secondary Formation

Granite

Granite (a felsic intrusive igneous rock)

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Sandstone

Arenite (primarily SiO2)

Sandstone (with Iron Staining)

Clastic sedimentary rock (SiO2 with Fe2O3 impurities)

Quartz (likely milky/rose quartz variety)

Quartz (SiO2 - Silicon Dioxide)