Rock Identifier

Category

Sedimentary Rock (Cryptocrystalline Quartz)

Browse sedimentary rock (cryptocrystalline quartz) specimens identified by the Rock Identifier community.

Quartz (Milky/Clear Variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Clear Variety)

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — Mineral

Quartz

Silicon Dioxide (SiO2)

Ironstone (likely Ferruginous Siltstone/Sandstone) (Ferruginous sedimentary rock (FeOx-rich clastic)) — sedimentary

Ironstone (likely Ferruginous Siltstone/Sandstone)

Ferruginous sedimentary rock (FeOx-rich clastic)

Wishing Stone (Graywacke with Quartz Vein) (Graywacke (immature sandstone) with a SiO2 (Quartz) intrusion) — sedimentary

Wishing Stone (Graywacke with Quartz Vein)

Graywacke (immature sandstone) with a SiO2 (Quartz) intrusion

Quartz (Crystal/Druzy Quartz) (Quartz (SiO₂)) — Mineral

Quartz (Crystal/Druzy Quartz)

Quartz (SiO₂)

White Quartzite (Quartzite (primarily SiO2)) — metamorphic

White Quartzite

Quartzite (primarily SiO2)

Quartz Vein / Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz Vein / Milky Quartz

Silicon Dioxide (SiO2)

Black Veined Jasper (Spiderweb Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Black Veined Jasper (Spiderweb Jasper)

Silicon Dioxide (SiO2)

Gneiss (High-grade foliated metamorphic rock) — metamorphic

Gneiss

High-grade foliated metamorphic rock

Wishing Stone (Sandstone with Quartz Vein) (Arenite with Quartzite intrusion (SiO₂)) — sedimentary

Wishing Stone (Sandstone with Quartz Vein)

Arenite with Quartzite intrusion (SiO₂)

Sandstone (Sandstone (principally SiO2)) — sedimentary

Sandstone

Sandstone (principally SiO2)

Green Jasper with Quartz veins (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Green Jasper with Quartz veins

Jasper (Silicon Dioxide, SiO2)

River Pebble (Greywacke or Quartzite-rich Sandstone) (Lithic Sandstone (primarily SiO2 with rock fragments)) — sedimentary

River Pebble (Greywacke or Quartzite-rich Sandstone)

Lithic Sandstone (primarily SiO2 with rock fragments)

Ferruginous Sandstone (Arenite with Iron-oxide cement (composed of Quartz and Limonite/Hematite)) — sedimentary

Ferruginous Sandstone

Arenite with Iron-oxide cement (composed of Quartz and Limonite/Hematite)

Basalt with Quartz Vein (Mafic volcanic rock with hydrothermal SiO2 filling) — igneous

Basalt with Quartz Vein

Mafic volcanic rock with hydrothermal SiO2 filling

Massive Quartz (Milky or Gray) (Silicon Dioxide (SiO2)) — mineral

Massive Quartz (Milky or Gray)

Silicon Dioxide (SiO2)

Jasper (Silicon dioxide (SiO2) with iron impurities) — sedimentary

Jasper

Silicon dioxide (SiO2) with iron impurities

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Sandstone (likely Quartzose Sandstone pebble) (Arenite (primarily SiO2)) — sedimentary

Sandstone (likely Quartzose Sandstone pebble)

Arenite (primarily SiO2)

Granite (Dioritic or Hornblende-rich) (Phaneritic Plutonic Felsic to Intermediate Igneous Rock) — igneous

Granite (Dioritic or Hornblende-rich)

Phaneritic Plutonic Felsic to Intermediate Igneous Rock

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

Quartz

Quartz (SiO2, Silicon Dioxide)

Quartz (variety of colors) (SiO2 (Silicon Dioxide)) — Mineral

Quartz (variety of colors)

SiO2 (Silicon Dioxide)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz with Garnet/Hematite and Basalt (Silicon Dioxide (SiO2) with Almandine (Fe3Al2Si3O12) and Basalt) — mineral

Milky Quartz with Garnet/Hematite and Basalt

Silicon Dioxide (SiO2) with Almandine (Fe3Al2Si3O12) and Basalt

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

Jasper with Quartz Vein

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Red Sandstone (Arenite (primarily Quartz with Hematite cement)) — sedimentary

Red Sandstone

Arenite (primarily Quartz with Hematite cement)

Quartz Geode Fragment (Silicon Dioxide (SiO2)) — mineral

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Shale (with minor calcite veining) (Clastic sedimentary rock (primarily clay minerals and quartz)) — sedimentary

Shale (with minor calcite veining)

Clastic sedimentary rock (primarily clay minerals and quartz)

Coarse-grained Jasper or Jasper Conglomerate (Silicon Dioxide with Iron Oxide (SiO2) + Fe2O3) — sedimentary

Coarse-grained Jasper or Jasper Conglomerate

Silicon Dioxide with Iron Oxide (SiO2) + Fe2O3

Banded Gneiss (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Sandstone (Quartz Sandstone) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartz Sandstone)

Arenite (primarily SiO2)

Red Sandstone (Arenite (with Iron Oxide / Hematite cementation)) — sedimentary

Red Sandstone

Arenite (with Iron Oxide / Hematite cementation)

Gneiss (with iron staining) (Gneiss) — metamorphic

Gneiss (with iron staining)

Gneiss

Petrified Wood (Silicified wood (Quartz/Chalcedony/Opal)) — sedimentary

Petrified Wood

Silicified wood (Quartz/Chalcedony/Opal)

Epidote in Quartz (Quartz with Epidote inclusions (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH) inclusions)) — Mineral

Epidote in Quartz

Quartz with Epidote inclusions (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH) inclusions)

Quartz Geode Fragment (Silicon Dioxide (SiO2)) — mineral

Quartz Geode Fragment

Silicon Dioxide (SiO2)

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

Honey Calcite (Orange Onyx)

Calcium Carbonate (CaCO3)

Red Sandstone (Arenite (primarily Quartz with Hematite cement)) — sedimentary

Red Sandstone

Arenite (primarily Quartz with Hematite cement)

Sandstone (likely Arkose or Quartz Sandstone) (Arenite (SiO2 principal component)) — sedimentary

Sandstone (likely Arkose or Quartz Sandstone)

Arenite (SiO2 principal component)

Sandstone with Bedding Planes (Arenite (Sedimentary rock composed primarily of sand-sized minerals)) — sedimentary

Sandstone with Bedding Planes

Arenite (Sedimentary rock composed primarily of sand-sized minerals)