Rock Identifier

Category

Organic (Non Geological)

Browse organic (non geological) specimens identified by the Rock Identifier community.

Chert (Jasper/Agate variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Agate variety)

Microcrystalline Quartz (SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Vesicular Basalt (Scoria) (Vesicular Basalt) — igneous

Vesicular Basalt (Scoria)

Vesicular Basalt

Cloudy Quartz / Quartz Tumble (Silicon Dioxide (SiO2)) — mineral

Cloudy Quartz / Quartz Tumble

Silicon Dioxide (SiO2)

Weathered Sandstone with Algae Growth (Arenite) — sedimentary

Weathered Sandstone with Algae Growth

Arenite

Banded Sandstone (Arenite with Liesegang banding) — sedimentary

Banded Sandstone

Arenite with Liesegang banding

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

Red Sandstone

Arenite (primarily Quartz with Hematite cement)

Red Sandstone (Arenite (Fe2O3 rich)) — sedimentary

Red Sandstone

Arenite (Fe2O3 rich)

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

Brecciated Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Basalt with Caliche Crust (Aphanitic Mafic Igneous Rock with Calcium Carbonate (CaCO3) coating) — igneous

Basalt with Caliche Crust

Aphanitic Mafic Igneous Rock with Calcium Carbonate (CaCO3) coating

River Pebbles (Sandstone and Quartzite) (SiO2 (Quartz) dominated clastic rocks) — sedimentary and metamorphic

River Pebbles (Sandstone and Quartzite)

SiO2 (Quartz) dominated clastic rocks

sedimentary and metamorphic

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

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Quartz (Fieldstone/Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (Fieldstone/Pebble)

Silicon Dioxide (SiO2)

Quartz Vein with Iron Staining (Silicon Dioxide (SiO2) with limonite/hematite staining) — mineral

Quartz Vein with Iron Staining

Silicon Dioxide (SiO2) with limonite/hematite staining

Geode (Unopened) (Silicon Dioxide (SiO2) in sedimentary vugs) — sedimentary

Geode (Unopened)

Silicon Dioxide (SiO2) in sedimentary vugs

Oolitic Ironstone (Sedimentary Ooidal Ironstone (Limonite/Hematite mixture)) — sedimentary

Oolitic Ironstone

Sedimentary Ooidal Ironstone (Limonite/Hematite mixture)

Michigan Float Copper (Native Copper (Cu)) — mineral

Michigan Float Copper

Native Copper (Cu)

Jasper with Epidote Vein (Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate (Ca2(Al,Fe)3(SiO4)3(OH))) — sedimentary

Jasper with Epidote Vein

Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate (Ca2(Al,Fe)3(SiO4)3(OH))

Crushed Rock (Basalt) (Basalt (Aphanitic Mafic Igneous Rock)) — Igneous

Crushed Rock (Basalt)

Basalt (Aphanitic Mafic Igneous Rock)

Quartz (Microcrystalline/Chert) (Silicon Dioxide (SiO2)) — mineral

Quartz (Microcrystalline/Chert)

Silicon Dioxide (SiO2)

Quartz (Iron-stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Quartz Sand Grain (Silicon Dioxide (SiO2)) — mineral

Quartz Sand Grain

Silicon Dioxide (SiO2)

Quartz-veined Sedimentary Rock (Hydrothermally veined Clastic Sedimentary Rock (SiO2 veins in Matrix)) — sedimentary

Quartz-veined Sedimentary Rock

Hydrothermally veined Clastic Sedimentary Rock (SiO2 veins in Matrix)

Red Sandstone (Arenite (Ferruginous Sandstone)) — sedimentary

Red Sandstone

Arenite (Ferruginous Sandstone)

Gold (Native Gold (Au)) — mineral

Gold

Native Gold (Au)

Sandstone (Arenite (primarily SiO2 - Silicon Dioxide)) — sedimentary

Sandstone

Arenite (primarily SiO2 - Silicon Dioxide)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz / Quartzite (Quartz (Silicon Dioxide, SiO2)) — metamorphic

Quartz / Quartzite

Quartz (Silicon Dioxide, SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide) - SiO2

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Shiva Lingam (Cryptocrystalline Quartz (Jasproid/Sandstone) with Iron Oxide (Fe2O3)) — sedimentary

Shiva Lingam

Cryptocrystalline Quartz (Jasproid/Sandstone) with Iron Oxide (Fe2O3)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Beach Pebble (likely Quartz or Chalcedony) (Silicon Dioxide (SiO2)) — Mineral

Beach Pebble (likely Quartz or Chalcedony)

Silicon Dioxide (SiO2)

Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Sandstone (Quartzite-rich Pebble) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (Quartzite-rich Pebble)

Arenite (composed primarily of SiO2)

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

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

Cloudy Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

Red Jasper (Jasper (Silicon Dioxide, SiO2 with Iron Oxide impurities)) — sedimentary

Red Jasper

Jasper (Silicon Dioxide, SiO2 with Iron Oxide impurities)

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)