Pyrite (on Quartz/Host Rock)
Iron Sulfide (FeS₂)
mineral
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.
Learn about Sedimentary Rock (Possibly Conglomerate Or Breccia With A Quartz Vein) in the encyclopedia
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River Pebbles (Tumbled Quartz and Basalt)
Silicon Dioxide (SiO2) for white quartz; Mafic Volcanic Rock for basalt
igneous and sedimentary
Geode
Quartz / Chalcedony nodule with mineralized cavity
sedimentary
Quartz
Quartz (SiO₂)
Mineral
Gray Quartzite with Quartz Veining
Metamorphosed Quartz-rich Sandstone
metamorphic
Quartz with Schist Inclusion
Quartz (SiO2) with micaceous schist inclusions
metamorphic
Snakeskin Jasper
Microcrystalline Quartz (SiO2) with iron inclusions
sedimentary
Sandstone
Clastic sedimentary rock (Quartz arenite)
sedimentary
Shale / Mudstone
Laminated Mudrock (Siliciclastic Sedimentary Rock)
sedimentary
Quartz Geode/Cluster
Quartz (SiO2)
mineral
Yellow Quartz
SiO2 (Silicon Dioxide)
mineral
Quartzite with Quartz Veining
Quartzite (primarily SiO2)
metamorphic
Quartz with Iron Oxide
SiO2
mineral
Quartz crystal
Quartz (Silicon dioxide, SiO2)
mineral
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (SiO2, often with CaCO3 or Fe2O3 cement)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Rock crystal quartz fragment
Quartz (silicon dioxide, SiO₂)
mineral
Sandstone
Sedimentary Rock (Quartz arenite or arkose)
sedimentary
Quartz (Iron-Stained / Ferruginous Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz
SiO2 (Silicon Dioxide)
mineral
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite / Lithic sandstone)
sedimentary
Quartz (Druzy)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone
Sedimentary Clastic Rock
sedimentary
Fossil Coral and Quartz Pebble
Fossilized Anthozoa / Silicon Dioxide (Quartz)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Ferruginous Quartz
Silicon Dioxide (SiO2) with Limonite/Hematite inclusions
Mineral
Druzy Quartz on Quartz Base
Silicon Dioxide (SiO2)
mineral
Carnelian and Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite and Limonite inclusions
mineral
Quartzite Sandstone / Quartz Sandstone
Quartz Sandstone (SiO2 with minor mineral impurities)
sedimentary
Pale green tumbled mineral fragment, likely serpentine or green calcite
Probable serpentine-group mineral (Mg3Si2O5(OH)4) or, less likely, calcite (CaCO3); identification is uncertain from the photograph
mineral
Sandstone and Mixed Rock Assemblage
Clastic Sedimentary Rock / Quartz Arenite
sedimentary
Assorted Tumbled Gemstones
Mixed oxides and silicates (including Quartz, Chalcedony, and Feldspar variants)
mineral
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Sandstone
Sedimentary Rock (Quartz Arenite)
sedimentary