Rock Identifier

Category

Man Made

Browse man made specimens identified by the Rock Identifier community.

Learn about Man Made in the encyclopedia

Opalite

Goldstone

Blue Goldstone

Zincite

Map Jasper

Mandarin Garnet

Mandarin Garnet

Andalusite

Marl

Dunite

Coquina

Dalmatian Jasper

Dalmatian Jasper

Chalk

Granite (Phaneritic plutonic igneous rock (mostly SiO2 and Al2O3)) — igneous

Granite

Phaneritic plutonic igneous rock (mostly SiO2 and Al2O3)

Quartzite with Iron Inclusions (Quartzite (primarily SiO2 with Fe2O3 impurities)) — metamorphic

Quartzite with Iron Inclusions

Quartzite (primarily SiO2 with Fe2O3 impurities)

Dendritic Quartz (Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions) — mineral

Dendritic Quartz

Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions

Jasper (Imperial Jasper style) (Silicon Dioxide (SiO2) with impurities) — sedimentary

Jasper (Imperial Jasper style)

Silicon Dioxide (SiO2) with impurities

Quartzite Pebble (Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Quartzite (SiO2)

Granodiorite (Granodiorite (intermediate plutonic rock)) — igneous

Granodiorite

Granodiorite (intermediate plutonic rock)

Chalcedony (Agate/Blue Quartzite) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate/Blue Quartzite)

Silicon Dioxide (SiO2)

Larimar (Pectolite (a blue variety of Pectolite)) — Mineral

Larimar

Pectolite (a blue variety of Pectolite)

Jasper pebble (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Jasper pebble

Jasper (Silicon Dioxide, SiO2)

Chert (with Chalky Cortex) (Silicon Dioxide (SiO2)) — sedimentary

Chert (with Chalky Cortex)

Silicon Dioxide (SiO2)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Porphyry (Porphyritic Basalt/Andesite) — igneous

Porphyry

Porphyritic Basalt/Andesite

Mica Schist (Mica Schist (contains Muscovite/Biotite, Quartz)) — metamorphic

Mica Schist

Mica Schist (contains Muscovite/Biotite, Quartz)

Yellow Quartzite River Cobble (Meta-quartzite (SiO2 with iron oxide staining)) — metamorphic

Yellow Quartzite River Cobble

Meta-quartzite (SiO2 with iron oxide staining)

Red Jasper with Quartz (Silicon Dioxide (SiO2)) — sedimentary

Red Jasper with Quartz

Silicon Dioxide (SiO2)

Rose Quartz (Silicon dioxide (SiO2)) — mineral

Rose Quartz

Silicon dioxide (SiO2)

Banded Agate (Agate (chalcedony variety of Silicon Dioxide, SiO2)) — mineral

Banded Agate

Agate (chalcedony variety of Silicon Dioxide, SiO2)

Red Scoria (Vesicular Basalt (Fe – rich)) — igneous

Red Scoria

Vesicular Basalt (Fe – rich)

River Pebble (Chert/Quartzite) (Microcrystalline Quartz (SiO2)) — sedimentary

River Pebble (Chert/Quartzite)

Microcrystalline Quartz (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — mineral

Petrified Wood

Silicified Wood (SiO2)

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

Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Banded Agate (Agate (Silicon Dioxide, SiO2)) — mineral

Banded Agate

Agate (Silicon Dioxide, SiO2)

Ferruginous Sandstone (Arenite with Iron Oxide cement (primarily Fe2O3)) — sedimentary

Ferruginous Sandstone

Arenite with Iron Oxide cement (primarily Fe2O3)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Sandstone (likely Graywacke or Arkose variant) (Clastic Sedimentary Rock (Lithic Sandstone)) — sedimentary

Sandstone (likely Graywacke or Arkose variant)

Clastic Sedimentary Rock (Lithic Sandstone)

Quartz Crystal Point (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal Point

Silicon Dioxide (SiO2)

Moss Agate (Moss Agate (a variety of Chalcedony, SiO

₂)) — Mineral (specifically a variety of Chalcedony, which is microcrystalline Quartz)

Moss Agate

Moss Agate (a variety of Chalcedony, SiO ₂)

Mineral (specifically a variety of Chalcedony, which is microcrystalline Quartz)

Quartz (in a rock matrix) (Quartz (SiO2)) — mineral

Quartz (in a rock matrix)

Quartz (SiO2)

Yellow Quartz (possibly dyed) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (possibly dyed)

Silicon Dioxide (SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Jasper-Agate Breccia (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Jasper-Agate Breccia

Silicon Dioxide (SiO2) with iron oxide inclusions

Dalmatian Stone (Peralkaline Quartz-Feldspar Rock) — igneous

Dalmatian Stone

Peralkaline Quartz-Feldspar Rock

Black Obsidian (Volcanic Glass (Amorphous Silicon Dioxide)) — igneous

Black Obsidian

Volcanic Glass (Amorphous Silicon Dioxide)

Emerald (Rough) (Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)) — gemstone

Emerald (Rough)

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Quartz (or Chalcedony) Specimen (Silicon Dioxide (SiO2)) — mineral

Quartz (or Chalcedony) Specimen

Silicon Dioxide (SiO2)

Fluorite on Matrix (Calcium Fluoride (CaF2)) — mineral

Fluorite on Matrix

Calcium Fluoride (CaF2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Granite Pebble (Felsic intrusive igneous rock) — igneous

Granite Pebble

Felsic intrusive igneous rock

Fluorite (Calcium fluoride (CaF2)) — mineral

Fluorite

Calcium fluoride (CaF2)

Sodalite and Calcite (Na8(Al6Si6O24)Cl2 (Sodalite) and CaCO3 (Calcite)) — mineral

Sodalite and Calcite

Na8(Al6Si6O24)Cl2 (Sodalite) and CaCO3 (Calcite)

Ferruginous Sandstone (Arenite with Iron-Oxide Cement) — sedimentary

Ferruginous Sandstone

Arenite with Iron-Oxide Cement