Pebble (likely Sandstone or Granitic Pebble)
Clastic Sediment (or specific rock type, e.g., Arenite, Granitoid Pebble)
Rock (likely Sedimentary)
Category
Sedimentary Rock (Possibly Conglomerate Or Breccia With A Quartz Vein)
Browse sedimentary rock (possibly conglomerate or breccia with a quartz vein) specimens identified by the Rock Identifier community.
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Sandstone (with potential mineral inclusions)
Clastic sedimentary rock (primarily Quartz, SiO2)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Sandstone
Quartz Arenite
sedimentary
Fuchsite Quartzite
Fuchsite-bearing Quartzite
Metamorphic
Clear Quartz
SiO2 (Silicon Dioxide)
mineral
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz (Citrine or Smoky variety)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Flint / Chert Arrowhead
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Chert Nodule (Iron-Stained)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Jasper) Pebble
Microcrystalline Quartz (SiO2)
sedimentary
Chert Arrowhead
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Jasper/Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Common Opal/Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (specifically Tan/Gray Chert)
Microcrystalline quartz (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Chert (River Pebble)
Microcrystalline Quartz (SiO2)
sedimentary
Basalt (with possible quartz veinsing)
Basalt
igneous
Quartzite with Quartz Veins
Quartzite (chiefly SiO2)
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Mineral and Rock Collection (Assorted)
Mixed collection including Quartz (SiO2), Jasper (SiO2 with impurities), Rose Quartz, and Aventurine
mineral
Polished granite cobble
Granite, typically quartz–feldspar–biotite granite
igneous
Sandstone Pebble
Sandstone (primarily Quartz, SiO2)
sedimentary
Turquoise
Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Chevron Amethyst
Silicon Dioxide (SiO2)
mineral
Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Quartz (Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Geode half
Geode (often quartz/chalcedony based)
sedimentary or igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz Sandstone
Quartz Arenite
sedimentary
Chert Arrowhead (Lithic Artifact)
Microcrystalline Quartz (SiO2)
sedimentary