Rock Identifier

Category

Sedimentary (Volcanic)

Browse sedimentary (volcanic) specimens identified by the Rock Identifier community.

Red Jasper (Silicon Dioxide (SiO2) with Hematite (Fe2O3) impurities) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3) impurities

Jasper and Yellow Chert (Tumbled) (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper and Yellow Chert (Tumbled)

Microcrystalline Quartz (SiO2)

Yellow Jasper (Silicon Dioxide (SiO2) with goethite or iron oxide inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with goethite or iron oxide inclusions

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Red Jasper (with Quartz veining) (Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions) — sedimentary

Red Jasper (with Quartz veining)

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

Petrified Wood (Silicified wood (Quartz/Chalcedony)) — Sedimentary

Petrified Wood

Silicified wood (Quartz/Chalcedony)

Jasper (specifically Yellow Jasper and Red Jasper) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Jasper (specifically Yellow Jasper and Red Jasper)

Silicon Dioxide (SiO2) with iron oxide inclusions

Yellow Jasper (Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions

Jasper (likely Ocean Jasper or Variegated Jasper) (Silicon Dioxide (SiO2) with impurities) — sedimentary

Jasper (likely Ocean Jasper or Variegated Jasper)

Silicon Dioxide (SiO2) with impurities

Red Jasper (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Jasper with Quartz inclusion (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Jasper with Quartz inclusion

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Zebra Jasper (Silicon Dioxide (SiO2) with impurities; typically a form of Chalcedony/Microcrystalline Quartz) — sedimentary

Zebra Jasper

Silicon Dioxide (SiO2) with impurities; typically a form of Chalcedony/Microcrystalline Quartz

Jasper (Silicon dioxide (SiO2) with iron oxide and clay inclusions) — sedimentary

Jasper

Silicon dioxide (SiO2) with iron oxide and clay inclusions

Red Jasper (Silicon Dioxide (SiO2) with Hematite (Fe2O3)) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3)

Jasper (Red Jasper) (Silicon Dioxide (SiO₂)) — sedimentary

Jasper (Red Jasper)

Silicon Dioxide (SiO₂)

Banded Agate (specifically Sardonyx or Carnelian Agate) (Silicon Dioxide (SiO2) - Chalcedony variety) — mineral

Banded Agate (specifically Sardonyx or Carnelian Agate)

Silicon Dioxide (SiO2) - Chalcedony variety

Jasper (Red/Green Brecciated) (Silicon Dioxide (SiO2) with iron oxide and chlorite inclusions) — sedimentary

Jasper (Red/Green Brecciated)

Silicon Dioxide (SiO2) with iron oxide and chlorite inclusions

Red Jasper (Silicon Dioxide with Hematite (SiO2 + Fe2O3)) — sedimentary

Red Jasper

Silicon Dioxide with Hematite (SiO2 + Fe2O3)

Red Jasper (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Picture Jasper (Tectonically broken chalcedony (SiO2)) — sedimentary

Picture Jasper

Tectonically broken chalcedony (SiO2)

Petrified Wood (Silicified wood (principally SiO2)) — sedimentary

Petrified Wood

Silicified wood (principally SiO2)

Picture Jasper (specifically Biggs or Deschutes variety) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Picture Jasper (specifically Biggs or Deschutes variety)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Red Jasper (Silicon Dioxide (SiO2) with Hematite inclusions) — mineral

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Carnelian (Carnelian (a variety of Chalcedony, SiO2)) — mineral

Carnelian

Carnelian (a variety of Chalcedony, SiO2)

Quartz Geode (Quartz (Silicon Dioxide, SiO2)) — Mineral

Quartz Geode

Quartz (Silicon Dioxide, SiO2)

Petrified Wood (Silicified Wood (primarily SiO2)) — sedimentary

Petrified Wood

Silicified Wood (primarily SiO2)

Poppy Jasper (Jasper (variety of Chalcedony), SiO2 (Silicon Dioxide)) — sedimentary

Poppy Jasper

Jasper (variety of Chalcedony), SiO2 (Silicon Dioxide)

Dendritic Jasper (Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions) — sedimentary

Dendritic Jasper

Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions

Jasper with Manganese Dendrites (Silicon Dioxide (SiO2) with Oxide Mineral Inclusions) — sedimentary

Jasper with Manganese Dendrites

Silicon Dioxide (SiO2) with Oxide Mineral Inclusions

Jasper (specifically Red Jasper or Iron-stained Chert) (Silicon dioxide (SiO2) with iron oxide inclusions) — sedimentary

Jasper (specifically Red Jasper or Iron-stained Chert)

Silicon dioxide (SiO2) with iron oxide inclusions

Agate (Agate (Silicon Dioxide - SiO2)) — mineral

Agate

Agate (Silicon Dioxide - SiO2)

Jasper with Quartz Veining (Silicon Dioxide (SiO2) - Cryptocrystalline Chalcedony) — sedimentary

Jasper with Quartz Veining

Silicon Dioxide (SiO2) - Cryptocrystalline Chalcedony

Carnelian (Carnelian (SiO2 - Silicon Dioxide with Iron Oxide impurities)) — mineral

Carnelian

Carnelian (SiO2 - Silicon Dioxide with Iron Oxide impurities)

Petrified Wood (Silicified Wood (primarily Quartz / Chalcedony: SiO2)) — metamorphic

Petrified Wood

Silicified Wood (primarily Quartz / Chalcedony: SiO2)

Geode with Quartz and Chalcedony (Silicon Dioxide (SiO2)) — sedimentary

Geode with Quartz and Chalcedony

Silicon Dioxide (SiO2)

Jasper Geode (Silicon Dioxide (SiO2) with impurities) — sedimentary

Jasper Geode

Silicon Dioxide (SiO2) with impurities

Jasper (Iron-stained Chert) (Silicon Dioxide (SiO2) with impurities of Iron Oxide) — sedimentary

Jasper (Iron-stained Chert)

Silicon Dioxide (SiO2) with impurities of Iron Oxide

Wishing Stone (Basalt or Mudstone with Quartz/Calcite Veins) (Hydrothermally veined Basalt (SiO2/CaCO3 intrusions)) — igneous or sedimentary

Wishing Stone (Basalt or Mudstone with Quartz/Calcite Veins)

Hydrothermally veined Basalt (SiO2/CaCO3 intrusions)

igneous or sedimentary

Quartz Vein in Host Rock (Silicon Dioxide (SiO2) within Sedimentary or Igneous Matrix) — igneous

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within Sedimentary or Igneous Matrix

Botryoidal Agate (Chalcedony (Silicon Dioxide, SiO2)) — mineral

Botryoidal Agate

Chalcedony (Silicon Dioxide, SiO2)

Red Jasper (Banded Jasper) (Silicon Dioxide (SiO2) with Hematite impurities) — sedimentary

Red Jasper (Banded Jasper)

Silicon Dioxide (SiO2) with Hematite impurities

Yellow Chalcedony (likely carnelian or yellow agate) (Silicon Dioxide (SiO₂)) — mineral

Yellow Chalcedony (likely carnelian or yellow agate)

Silicon Dioxide (SiO₂)