Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Category
Man Made Material (Metal)
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Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone
Quartz Arenite / Clastic Sedimentary Rock
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Botryoidal Chalcedony / Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone
Quartz Arenite / Clastic Sedimentary Rock
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Pink Granite / K-Feldspar
Alkali feldspar granite / Potassium feldspar (Microcline/Orthoclase)
igneous
Fossilized Coral
Rugosa or Tabulate Coral Fossil (Replacement by Silica/Calcite)
fossil
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone
Clastic sedimentary rock composed mainly of quartz sand
sedimentary
Spherulitic Agate / Moss Agate
Chalcedony (SiO2) with mineral inclusions
mineral
Sandstone Pebble
Arenite (Siliclastic sedimentary rock)
sedimentary
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
sedimentary
Quartzite River Rock
Quartzite (primarily SiO2)
metamorphic
River Stone (likely Quartzite or Sandstone)
Metamorphosed Quartz-rich Rock (SiO2)
metamorphic
Sandstone
Arenite
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone (Siltstone or Fine-grained)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Red Sandstone
Ferruginous Sandstone (SiO2 dominated with Fe2O3)
sedimentary
Red Sandstone
Sandstone (lithic arenite or arkose with iron oxide)
sedimentary
Amazonite
Microcline (variety Amazonite), K(AlSi3O8)
mineral
Red Jasper with Quartz Vein
Microcrystalline Quartz (SiO2) with Hematite inclusions
sedimentary
Diorite
Diorite (intermediate intrusive igneous rock)
igneous
Milky Quartz/Gray Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Thulite in Matrix
Pink Zoisite - Ca2Al3(SiO4)3(OH)
metamorphic
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide Fe2O3 cement)
sedimentary
Labradorite
(Ca, Na)(Al, Si)4O8 (Plagioclase Feldspar)
mineral
Limestone (River Pebble)
Calcium Carbonate (CaCO3)
sedimentary
Red Sandstone
Ferruginous Sandstone
sedimentary
Milky Quartz with Mica inclusions
Quartz (Silicon Dioxide, SiO2)
mineral
Limestone River Pebble
Sedimentary Calcium Carbonate (CaCO3)
sedimentary