Rock Identifier

Category

Sedimentary (Cryptocrystalline Quartz)

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

Green Aventurine and Clear Quartz (Green Aventurine (Silicon Dioxide - SiO2 with Fuchsite inclusions); Clear Quartz (Silicon Dioxide - SiO2)) — Mineral

Green Aventurine and Clear Quartz

Green Aventurine (Silicon Dioxide - SiO2 with Fuchsite inclusions); Clear Quartz (Silicon Dioxide - SiO2)

Mineral
Quartz (Milky or Druzy Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or Druzy Quartz)

Silicon Dioxide (SiO2)

mineral
Quartz (Milky or Cloudy Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or Cloudy Quartz)

Silicon Dioxide (SiO2)

mineral
Banded Iron Formation (BIF) with Quartz (Banded Iron Formation, often composed of alternating layers of hematite (Fe2O3) or magnetite (Fe3O4) and chert (microcrystalline quartz, SiO2)) — Sedimentary

Banded Iron Formation (BIF) with Quartz

Banded Iron Formation, often composed of alternating layers of hematite (Fe2O3) or magnetite (Fe3O4) and chert (microcrystalline quartz, SiO2)

Sedimentary
Kyanite in Quartz (Kyanite (Al2SiO5) with Quartz (SiO2) matrix) — metamorphic

Kyanite in Quartz

Kyanite (Al2SiO5) with Quartz (SiO2) matrix

metamorphic
Kyanite in Quartz (Kyanite (Al2SiO5) with Quartz (SiO2)) — metamorphic

Kyanite in Quartz

Kyanite (Al2SiO5) with Quartz (SiO2)

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

Clear Quartz

Silicon Dioxide (SiO2)

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

Clear Quartz

Silicon Dioxide (SiO2)

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

Quartz Geode (Smoky Quartz)

Silicon Dioxide (SiO2)

mineral
Sandstone (likely a river or beach pebble) (Sandstone (a clastic sedimentary rock)) — Sedimentary Rock

Sandstone (likely a river or beach pebble)

Sandstone (a clastic sedimentary rock)

Sedimentary Rock
Shale (Fissile mudstone (rich in clay minerals and quartz)) — sedimentary

Shale

Fissile mudstone (rich in clay minerals and quartz)

sedimentary
Pink Granite (Phaneritic Plutonic Felsic Igneous Rock (Granite)) — igneous

Pink Granite

Phaneritic Plutonic Felsic Igneous Rock (Granite)

igneous
Sandstone (Arenite) — sedimentary

Sandstone

Arenite

sedimentary
Mixed Tumbled Stones Collection (Mixed Silicates and Carbonates (Quartz, Amorphous Silica, Carbonates)) — multiple

Mixed Tumbled Stones Collection

Mixed Silicates and Carbonates (Quartz, Amorphous Silica, Carbonates)

multiple
Prasiolite and Quartz Crystal Cluster (Quartz (SiO2); Prasiolite is a variety of Quartz) — mineral

Prasiolite and Quartz Crystal Cluster

Quartz (SiO2); Prasiolite is a variety of Quartz

mineral
Pebble (likely Quartzite or Chert) (Clastic Sediment, potentially composed of SiO₂ (Quartz)) — Mineral, Sediment

Pebble (likely Quartzite or Chert)

Clastic Sediment, potentially composed of SiO₂ (Quartz)

Mineral, Sediment
Herkimer Diamond (Quartz (Silica - SiO2)) — mineral

Herkimer Diamond

Quartz (Silica - SiO2)

mineral
Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

mineral
Sandstone (Water-worn Pebble) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Sandstone (Water-worn Pebble)

Clastic Sedimentary Rock (primarily SiO2)

sedimentary
Quartz Geode Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Geode Pebble

Silicon Dioxide (SiO2)

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

Quartz Geode Fragment

Silicon Dioxide (SiO2)

sedimentary
Sandstone (Water-worn Pebble) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (Water-worn Pebble)

Clastic sedimentary rock (primarily SiO2)

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

Clear Quartz

Silicon Dioxide (SiO2)

mineral
Quartz (Tumbled/Polished Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (Tumbled/Polished Pebble)

Silicon Dioxide (SiO2)

mineral
Quartz (Chert/Chalcedony variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Chert/Chalcedony variety)

Silicon Dioxide (SiO2)

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

Druzy Quartz

Silicon Dioxide (SiO2)

mineral
Sandstone (Arenite) — sedimentary

Sandstone

Arenite

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

Quartz (Crystal/Druzy Quartz)

Quartz (SiO₂)

Mineral
White Calcite (Calcium Carbonate (CaCO3)) — mineral

White Calcite

Calcium Carbonate (CaCO3)

mineral
Sandstone (likely Quartzose) (Sandstone (Principally SiO2)) — sedimentary

Sandstone (likely Quartzose)

Sandstone (Principally SiO2)

sedimentary
Red Jasper (Silicon Dioxide with Iron inclusions (SiO2)) — sedimentary

Red Jasper

Silicon Dioxide with Iron inclusions (SiO2)

sedimentary
Fancy Jasper (Silicon Dioxide (SiO2) with mineral inclusions) — sedimentary

Fancy Jasper

Silicon Dioxide (SiO2) with mineral inclusions

sedimentary
Brecciated Jasper (Silicon Dioxide (SiO2) with Hematite inclusions) — sedimentary

Brecciated Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

sedimentary
Gold (Native Gold (Au)) — mineral

Gold

Native Gold (Au)

mineral
Sandstone (likely Quartzose Sandstone) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Sandstone (likely Quartzose Sandstone)

Clastic Sedimentary Rock (primarily SiO2)

sedimentary
Clear Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

mineral
Chert (Chert (Microcrystalline Quartz, SiO2)) — sedimentary

Chert

Chert (Microcrystalline Quartz, SiO2)

sedimentary
Green Jasper (Silicon Dioxide (SiO2) with iron silicate inclusions) — sedimentary

Green Jasper

Silicon Dioxide (SiO2) with iron silicate inclusions

sedimentary
Red Jasper (Microcrystalline quartz (SiO2) with Hematite (Fe2O3) impurities) — sedimentary

Red Jasper

Microcrystalline quartz (SiO2) with Hematite (Fe2O3) impurities

sedimentary
Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

sedimentary
Dalmatian Jasper (Dalmatian Stone (a microcrystalline quartz and feldspar rock with arfvedsonite)) — igneous

Dalmatian Jasper

Dalmatian Stone (a microcrystalline quartz and feldspar rock with arfvedsonite)

igneous
Wood Jasper (Siliceous sedimentary rock (variety of Chert/Chalcedony)) — Sedimentary

Wood Jasper

Siliceous sedimentary rock (variety of Chert/Chalcedony)

Sedimentary