Sedimentary Rock (Possibly Conglomerate Or Breccia With A Quartz Vein)

Likely quartz cluster with iron staining

Quartz (SiO₂), possibly with calcite or feldspar inclusions

Quartz Pebble

Silicon Dioxide (SiO2)

Puddingstone

Conglomerate

Likely quartz-rich rock fragment

Probably microcrystalline quartz (SiO₂), possibly a pale chert or quartzite fragment

Conglomerate

Conglomerate Rock

Sandstone with Quartz Vein

Quartzose Sandstone with Hydrothermal Quartz

Quartz-veined Limestone

Sedimentary limestone with quartz/calcite veinlets

Brecciated Jasper

Silicon dioxide (SiO2) microcrystalline quartz breccia

Quartz (Smoky/Milky variety with inclusion)

Silicon Dioxide (SiO2)

Red Breccia Jasper

Silicon Dioxide (SiO2) with iron oxide impurities

Wishing Rock (Quartz Vein in Host Rock)

Silicon dioxide (SiO2) vein in various host rocks

Likely galena-bearing ore

Galena (lead sulfide, PbS), possibly with quartz or calcite gangue

Druzy Quartz on Matrix

Silicon Dioxide (SiO2)

Pyrite in Quartz Matrix

Iron Sulfide (FeS2) embedded in Silicon Dioxide (SiO2)

Tiny metallic mineral fragment, possibly native gold

Native gold (Au), unconfirmed; could also be pyrite or chalcopyrite

Conglomerate

Sedimentary Conglomerate

Quartz Vein in Sandstone

Hydrothermal Quartz (SiO2) in Arenite

Quartz Vein in River Siltstone

Crystalline Quartz (SiO2) in Siliclastic Matrix

Basalt with Quartz Vein

Basalt with silicon dioxide (SiO2) inclusion

Quartz Pebble

Silicon Dioxide (SiO2)

Waterworn Pebble / Quartzite

Metamorphic/Sedimentary rock fragment

Quartz

Quartz (SiO2 - Silicon Dioxide)

Sandstone

Clastic Sedimentary Rock (composed mostly of quartz, SiO2)

Quartz (with inclusions / Sandstone fragment)

Silicon Dioxide (SiO2)

Quartz

SiO₂ (Silicon Dioxide)

Jasper Conglomerate

Polymictic Conglomerate with Jasper and Quartz

Milky Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Weathered quartz-rich rock, likely milky quartz or quartzite

Quartz (SiO₂), possibly quartzite with iron-oxide staining

Mixed river stones and gravel

Polymictic alluvial clasts; individual pieces may include quartzite, granite, basalt, sandstone, limestone, and slate

Conglomerate

Polymictic Conglomerate

Common Gravel / Pebble

Lithified rock fragment / Detrital sediment

Basalt with Mineral Vein (Cobble)

Basalt (with likely Quartz/Calcite vein)

Quartz-veined Basalt or Limestone Pebble

Quartz vein in host rock (Silicate mineral in carbonate or volcanic matrix)

Quartzite Pebbles with Quartz Veining

SiO2 (Silicon Dioxide with country rock matrix)

Quartz-rich river pebble, likely milky quartz

Milky quartz (SiO₂), possibly a quartzite or quartz-rich silicate pebble

Milky quartz (quartz crystal)

Quartz, silicon dioxide (SiO₂)

Tumbled Clear Quartz/Rock Crystal

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Banded Gneiss Pebble

Gneiss (Metamorphic Rock)

Conglomerate

Conglomeratic Sandstone

Quartz-rich rock, possibly milky quartz or quartzite

Quartz (SiO₂), potentially quartzite if the grainy texture is rock-wide

Conglomerate

Conglomerate