Jasper and Quartz conglomerate (River Rock)
Silicon Dioxide (SiO2) - Chalcedony and Quartz variety
sedimentary
Category
Industrial Byproduct (Anthropogenic Rock Like Material)
Browse industrial byproduct (anthropogenic rock like material) specimens identified by the Rock Identifier community.
Diorite
Diorite (an intrusive igneous rock)
igneous
Crushed Stone (Likely Granite or Diabase)
Intrusive Igneous Rock (Granitoid/Gabbroid)
igneous
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within Sedimentary/Metamorphic Matrix
Metamorphic or Igneous (context dependent)
Gold in Quartz
Hydrothermal Quartz with Native Gold (SiO2 with Au)
mineral
Porphyritic Basalt (or Porphyry)
Porphyritic Basalt (Mafic volcanic rock with phenocrysts)
igneous
Chert (varieties include Flint or Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Crushed Limestone
Calcite-rich Sedimentary Rock (CaCO3)
sedimentary
Wishing Stone (Quartz-veined Siltstone or Graywacke)
Hydrothermal Quartz vein in matrix of SiO2 (Quartz) and Al2O3 (Clay minerals)
sedimentary
Pink Quartzite
Quartzite (primarily SiO2 with trace Fe2O3)
metamorphic
Quartz with Schist Inclusion
Crystalline Silicon Dioxide (SiO2) with Muscovite/Biotite Schist
metamorphic
Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Red Jasper or Chert
Jasper (SiO2, a variety of chalcedony with iron oxide impurities), Chert (SiO2)
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Sea Glass (Teal/Turquoise)
Amorphous Silica (SiO2) with trace metal oxides
Anthropogenic (Man-made material processed by nature)
Agate
Silicon Dioxide (SiO2)
mineral
Tiffany Stone
Fluorite-bearing Opalized Breccia
Rock/Mineralized Nodule
Quartzite (Yellow/Orange variety)
Quartzite (primarily SiO2)
metamorphic
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Chert Pebble
Microcrystalline Quartz (SiO2)
sedimentary
Chert (often called Flint when dark)
Microcrystalline silicon dioxide (SiO2)
sedimentary
Gold-bearing Quartz
Auriferous Quartz (SiO2 with Native Gold inclusion)
mineral
Druzy Quartz on Chert/Siltstone
Silicon Dioxide (SiO2) on Microcrystalline Silica/Siltstone matrix
sedimentary
Basalt with Desert Varnish
Mafic Volcanic Rock (Fe/Mg rich Silicate)
igneous
Basalt
Basalt (containing plagioclase, pyroxene, and olivine)
igneous
Granitic Pegmatite
Pegmatite containing Quartz, Pink Potassium Feldspar, and Muscovite Mica
igneous
Pegmatite
Pegmatitic Granite
igneous
Chert (concretionary/nodular variant)
Microcrystalline Quartz (SiO2) with possible fossil or mineral inclusions
sedimentary
Shale with Vein Infillings
Shale (a fine-grained clastic sedimentary rock). The veins could be Calcite (CaCO3), Quartz (SiO2), or other minerals.
Sedimentary Rock
Chert (Iron-Stained)
Chert (Silicon Dioxide, SiO2)
sedimentary
Quartz Geode
Quartz (Silicon Dioxide - SiO2) within a Chalcedony and Limonite shell
sedimentary
Chert (Pebble)
Microcrystalline silica (SiO2)
sedimentary
Peridot
Olivine (specific variety: gem-quality forsterite), (Mg,Fe)2SiO4
Mineral
Ferruginous Sandstone (Gozzan-like)
Ferruginous Sandstone (SiO2 with FeO(OH) inclusions)
sedimentary
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Pumice
Pumicite (Amorphous volcanic glass)
Igneous
Micrometeorite (Spherule)
Extraterrestrial Accretion Spherule
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Olivine in Basalt
Peridotite / Forsterite ((Mg,Fe)2SiO4)
igneous
Chert (Jasper/Quartzite river pebble)
Microcrystalline Silica (SiO2)
sedimentary
Dalmation Jasper (or Dalmation Stone)
Dalmation Stone (composed of Perthite, Quartz, and Arfvedsonite)
igneous
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous