Rock Identifier

Category

Sedimentary (Silica Rich Mineral Variety)

Browse sedimentary (silica rich mineral variety) specimens identified by the Rock Identifier community.

Red Jade (Dyed Quartzite) (Silicon Dioxide (SiO2) - variety Quartzite) — metamorphic

Red Jade (Dyed Quartzite)

Silicon Dioxide (SiO2) - variety Quartzite

Red Jasper (Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2 + Fe2O3)) — mineral

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2 + Fe2O3)

Chert (specifically Jasper or Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Jasper or Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Sandstone (Ferruginous) (Arenite (iron-rich)) — sedimentary

Sandstone (Ferruginous)

Arenite (iron-rich)

Chalcedony (Botryoidal/Drusy Quartz) (Silicon Dioxide (SiO₂)) — Mineral

Chalcedony (Botryoidal/Drusy Quartz)

Silicon Dioxide (SiO₂)

Quartz Geode (Druzy) (Crystalline Silicon Dioxide (SiO2)) — mineral

Quartz Geode (Druzy)

Crystalline Silicon Dioxide (SiO2)

Quartz Geode (Citrine or Iron-stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz Geode (Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Sandstone (Ferruginous) (Clastic Sedimentary Rock (SiO2 with Fe2O3/FeOOH cement)) — sedimentary

Sandstone (Ferruginous)

Clastic Sedimentary Rock (SiO2 with Fe2O3/FeOOH cement)

Chert Nodule in Limestone (Chert (Microcrystalline Quartz, SiO2) and Limestone (Calcium Carbonate, CaCO3)) — sedimentary

Chert Nodule in Limestone

Chert (Microcrystalline Quartz, SiO2) and Limestone (Calcium Carbonate, CaCO3)

Moss Agate (SiO2 (Silicon Dioxide) with dendritic inclusions) — Mineral

Moss Agate

SiO2 (Silicon Dioxide) with dendritic inclusions

Clear Quartz (Crystalline Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Crystalline Silicon Dioxide (SiO2)

Limonite-stained Quartz / Quartzite (Silicon Dioxide (SiO2) with iron hydroxides (FeO(OH)·nH2O)) — sedimentary or metamorphic

Limonite-stained Quartz / Quartzite

Silicon Dioxide (SiO2) with iron hydroxides (FeO(OH)·nH2O)

sedimentary or metamorphic

Dalmatian Jasper (Peralkaline rhyolite) — igneous

Dalmatian Jasper

Peralkaline rhyolite

Obsidian (Obsidian (Volcanic Glass, SiO2 + impurity)) — Igneous

Obsidian

Obsidian (Volcanic Glass, SiO2 + impurity)

Black Tourmaline (Schorl) (Schorl (Na(Fe^2+)3Al6(Si6O18)(BO3)3(OH)4)) — Mineral

Black Tourmaline (Schorl)

Schorl (Na(Fe^2+)3Al6(Si6O18)(BO3)3(OH)4)

Chert (Jasper-bearing) (Microcrystalline silica (SiO2) with iron oxide inclusions) — sedimentary

Chert (Jasper-bearing)

Microcrystalline silica (SiO2) with iron oxide inclusions

Chert (Iron-stained) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

Chert (varietal: Flint/Jasper mix) (Hydrous Silica (SiO2)) — sedimentary

Chert (varietal: Flint/Jasper mix)

Hydrous Silica (SiO2)

Quartz Geode (Silicon Dioxide (SiO2) in a Secondary Sedimentary/Volcanic cavity) — mineral

Quartz Geode

Silicon Dioxide (SiO2) in a Secondary Sedimentary/Volcanic cavity

Agate (Silicon Dioxide / Cryptocrystalline Quartz (SiO2)) — mineral

Agate

Silicon Dioxide / Cryptocrystalline Quartz (SiO2)

Red Jasper (Jasper (Silicate Mineral), SiO2 with Fe2O3 inclusions) — sedimentary

Red Jasper

Jasper (Silicate Mineral), SiO2 with Fe2O3 inclusions

Yellow Jasper (Silicon Dioxide (SiO2) with Goethite or Limonite inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite or Limonite inclusions

Sardonyx Cameo (Silicon Dioxide (SiO2) - variety Cryptocrystalline Quartz) — Mineral

Sardonyx Cameo

Silicon Dioxide (SiO2) - variety Cryptocrystalline Quartz

Milky Quartz with Iron Staining (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz with Iron Staining

Quartz (Silicon Dioxide, SiO2)

Yellow Quartz (Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Chalcedony)

Silicon Dioxide (SiO2)

Milky Quartz (Quartz (Silicon Dioxide - SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Druzy Quartz on Chalcedony Matrix (Silicon Dioxide (SiO2)) — mineral

Druzy Quartz on Chalcedony Matrix

Silicon Dioxide (SiO2)

Agate Geode (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Agate Geode

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Carnelian (Red Agate/Chalcedony) (Cryptocrystalline Quartz (SiO2) with Hematite impurities) — mineral

Carnelian (Red Agate/Chalcedony)

Cryptocrystalline Quartz (SiO2) with Hematite impurities

Yellow Chalcedony (Agate/Carnelian variant) (Silicon Dioxide (SiO₂)) — mineral

Yellow Chalcedony (Agate/Carnelian variant)

Silicon Dioxide (SiO₂)

Chert Geode or Nodule (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Geode or Nodule

Microcrystalline Quartz (SiO2)

Sandstone (with Iron Staining) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2)

Granite (with alteration) (Granite (Felsic intrusive igneous rock)) — igneous

Granite (with alteration)

Granite (Felsic intrusive igneous rock)

Jade (likely Jadeite or Nephrite) (Jadeite (NaAlSi2O6) or Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)) — Mineral/Mineraloid

Jade (likely Jadeite or Nephrite)

Jadeite (NaAlSi2O6) or Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)

Mineral/Mineraloid

Honey Calcite (Orange Onyx) (Calcium Carbonate (CaCO3)) — mineral

Honey Calcite (Orange Onyx)

Calcium Carbonate (CaCO3)

Chert (often called Flint or Jasper) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint or Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (with Quartz vein) (Chert (Silicon Dioxide, SiO2)) — sedimentary

Chert (with Quartz vein)

Chert (Silicon Dioxide, SiO2)

Chert (variously known as Flint or Microcrystalline Quartz) (Silicon dioxide (SiO2)) — sedimentary

Chert (variously known as Flint or Microcrystalline Quartz)

Silicon dioxide (SiO2)

Fluorite Bracelet (light green beads) and possibly Lavender Jadeite (purple bead) (Fluorite: CaF₂ (Calcium Fluoride); Jadeite: NaAlSi₂O₆ (Sodium Aluminum Silicate)) — Mineral for Fluorite; Mineral/Rock for Jadeite (as it's often a rock composed primarily of jadeite mineral)

Fluorite Bracelet (light green beads) and possibly Lavender Jadeite (purple bead)

Fluorite: CaF₂ (Calcium Fluoride); Jadeite: NaAlSi₂O₆ (Sodium Aluminum Silicate)

Mineral for Fluorite; Mineral/Rock for Jadeite (as it's often a rock composed primarily of jadeite mineral)

Petrified Wood (Silicified Wood (SiO2)) — mineral

Petrified Wood

Silicified Wood (SiO2)

Sandstone with Quartz Vein (Arenite with Quartz (SiO2) Infilling) — sedimentary

Sandstone with Quartz Vein

Arenite with Quartz (SiO2) Infilling

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

Carnelian

Carnelian (a variety of Chalcedony, SiO2)