Rock Identifier

Category

Sedimentary (Microcrystalline Quartz)

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

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

Chalcedony (Cryptocrystalline Quartz (SiO2)) — Mineral

Chalcedony

Cryptocrystalline Quartz (SiO2)

Dyed Agate (Silicon Dioxide with artificial pigment (SiO2)) — sedimentary

Dyed Agate

Silicon Dioxide with artificial pigment (SiO2)

Chert (Jasper/Brown Chert) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper/Brown Chert)

Silicon Dioxide (SiO2)

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

Pink Granite

Phaneritic Plutonic Felsic Igneous Rock (Granite)

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

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Lake Superior Agate (Banded Chalcedony (SiO2)) — mineral

Lake Superior Agate

Banded Chalcedony (SiO2)

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)

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

Sandstone (Water-worn Pebble)

Clastic Sedimentary Rock (primarily SiO2)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

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

Chalcedony (Agate) (Cryptocrystalline Quartz (SiO2)) — mineral

Chalcedony (Agate)

Cryptocrystalline Quartz (SiO2)

Herkimer Diamond (Quartz (Silica - SiO2)) — mineral

Herkimer Diamond

Quartz (Silica - SiO2)

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

Quartz Geode Fragment

Silicon Dioxide (SiO2)

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

Sandstone (Water-worn Pebble)

Clastic sedimentary rock (primarily SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Quartzite (Quartzite (SiO2 principal component)) — metamorphic

Quartzite

Quartzite (SiO2 principal component)

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

Quartz (Tumbled/Polished Pebble)

Silicon Dioxide (SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Ocean Jasper (Silicon Dioxide (SiO2) - Orbicular Jasper / Chalcedony) — mineral

Ocean Jasper

Silicon Dioxide (SiO2) - Orbicular Jasper / Chalcedony

Tiger's Eye (Silicon Dioxide (SiO2) with Limonite/Goethite pseudomorphs after Crocidolite) — Mineral

Tiger's Eye

Silicon Dioxide (SiO2) with Limonite/Goethite pseudomorphs after Crocidolite

Druzy Quartz (Silicon Dioxide (SiO2)) — mineral

Druzy Quartz

Silicon Dioxide (SiO2)

White Calcite (Calcium Carbonate (CaCO3)) — mineral

White Calcite

Calcium Carbonate (CaCO3)

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

Quartz (Crystal/Druzy Quartz)

Quartz (SiO₂)

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

Sandstone (likely Quartzose)

Sandstone (Principally SiO2)

Aventurine (likely Green Aventurine) (Quartz (SiO2) with included minerals (Fuchsite or Chlorite for green color)) — Mineral

Aventurine (likely Green Aventurine)

Quartz (SiO2) with included minerals (Fuchsite or Chlorite for green color)

Fossilized Crab Carapace (Concretion) (Decapoda (fossil), typically preserved in calcite or siderite concretion) — sedimentary

Fossilized Crab Carapace (Concretion)

Decapoda (fossil), typically preserved in calcite or siderite concretion

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

Sandstone (likely Quartzose Sandstone)

Clastic Sedimentary Rock (primarily SiO2)

Carnelian (Orange Agate) (Silicon Dioxide (SiO2)) — mineral

Carnelian (Orange Agate)

Silicon Dioxide (SiO2)

Gold (Native Gold (Au)) — mineral

Gold

Native Gold (Au)

Agate (Silicon Dioxide (SiO2) - Cryptocrystalline Chalcedony) — Mineral

Agate

Silicon Dioxide (SiO2) - Cryptocrystalline Chalcedony

Agate (or Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Agate (or Chalcedony)

Silicon Dioxide (SiO2)

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

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Quartzite with Iron Staining (Quartzite (primarily SiO2 with Fe2O3 staining)) — metamorphic

Quartzite with Iron Staining

Quartzite (primarily SiO2 with Fe2O3 staining)

Quartzite (Metamorphosed Sandstone (SiO2 - Silicon Dioxide)) — metamorphic

Quartzite

Metamorphosed Sandstone (SiO2 - Silicon Dioxide)

Quartzite (River Cobble) (Quartzite (Metamorphosed Quartz Sandstone, SiO2)) — metamorphic

Quartzite (River Cobble)

Quartzite (Metamorphosed Quartz Sandstone, SiO2)

Blue Lace Agate (Chalcedony (cryptocrystalline variety of Quartz), SiO2) — mineral

Blue Lace Agate

Chalcedony (cryptocrystalline variety of Quartz), SiO2

Quartzite (River Stone) (Quartzite (SiO2)) — metamorphic

Quartzite (River Stone)

Quartzite (SiO2)

Dalmatian Jasper (Peralkaline rhyolite) — igneous

Dalmatian Jasper

Peralkaline rhyolite

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

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

Red Jasper

Silicon dioxide (SiO2) with iron oxide inclusions