Rock Identifier

Category

Mineralogical Specimen

Browse mineralogical specimen specimens identified by the Rock Identifier community.

Learn about Mineralogical Specimen in the encyclopedia

Emerald in Matrix

Emerald in Matrix

Morganite Crystal

Morganite Crystal

Aquamarine Matrix

Aquamarine Matrix

Emerald Crystal

Emerald Crystal

Aquamarine Crystal

Aquamarine Crystal

Mushroom Tourmaline

Mushroom Tourmaline

White Beryl

Smoky Quartz

Clear Obsidian

Goshenite Crystal

Goshenite Crystal

Magnetite

Crocoite

Red Jasper (with Quartz) (Silicon Dioxide (SiO2) with Hematite inclusions) — mineral

Red Jasper (with Quartz)

Silicon Dioxide (SiO2) with Hematite inclusions

Sandstone (Arenite (specifically sublithic or quartz arenite)) — sedimentary

Sandstone

Arenite (specifically sublithic or quartz arenite)

Chert (or Jasper) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (or Jasper)

Cryptocrystalline Quartz (SiO2)

Banded Carnelian Agate (Cryptocrystalline Quartz (SiO2)) — sedimentary

Banded Carnelian Agate

Cryptocrystalline Quartz (SiO2)

Dendritic sandstone (Sandstone with Manganese Oxide dendrites) — sedimentary

Dendritic sandstone

Sandstone with Manganese Oxide dendrites

Coal (Carbonaceous sedimentary rock (C)) — sedimentary

Coal

Carbonaceous sedimentary rock (C)

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

Quartz (Common or Milky)

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Red Jasper (Silicon Dioxide (SiO2)) — sedimentary

Red Jasper

Silicon Dioxide (SiO2)

Ferruginous Quartz (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — mineral

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Banded Agate (Cryptocrystalline Quartz (SiO2)) — mineral

Banded Agate

Cryptocrystalline Quartz (SiO2)

Chert (Commonly known as Flint/Jasper) (Microcrystalline Quartz (SiO2) with iron oxide inclusions) — sedimentary

Chert (Commonly known as Flint/Jasper)

Microcrystalline Quartz (SiO2) with iron oxide inclusions

Sandstone (Arenite (Silicon Dioxide with various mineral cements)) — sedimentary

Sandstone

Arenite (Silicon Dioxide with various mineral cements)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Basalt (Mafic volcanic rock (Basalt)) — igneous

Basalt

Mafic volcanic rock (Basalt)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Pink Granite (Phaneritic Igneous Rock (high K-feldspar content)) — igneous

Pink Granite

Phaneritic Igneous Rock (high K-feldspar content)

Quartzite Cobble (Quartzite (Silicon Dioxide, SiO2)) — metamorphic

Quartzite Cobble

Quartzite (Silicon Dioxide, SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartzite with Quartz Veining (Metamorphosed Quartz-rich Sandstone (SiO2)) — metamorphic

Quartzite with Quartz Veining

Metamorphosed Quartz-rich Sandstone (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Chert (with Quartz veins) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (with Quartz veins)

Microcrystalline Quartz (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Siltstone Concretion (Carbonate-cemented Siltstone Concretion) — sedimentary

Siltstone Concretion

Carbonate-cemented Siltstone Concretion

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

Milky Quartz (Druzy Coating)

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Chert (Yellow Jasper)

Silicon dioxide (SiO2) with iron oxide inclusions

Chert (with Iron Staining) (Silicon Dioxide (SiO2)) — sedimentary

Chert (with Iron Staining)

Silicon Dioxide (SiO2)

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

Red Jasper with Quartz

Silicon Dioxide (SiO2) with Hematite impurities

Quartzite pebble (Quartzite (SiO2)) — metamorphic

Quartzite pebble

Quartzite (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Quartzite Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Quartzite Conglomerate

Conglomerate (clastic sedimentary rock)

Conglomerate (Conglomerate (Sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (Sedimentary rock)

Red Jasper (with Quartz and Chert) (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — sedimentary

Red Jasper (with Quartz and Chert)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Basalt with Quartz Veining (Basalt (SiO2-rich veins)) — igneous

Basalt with Quartz Veining

Basalt (SiO2-rich veins)

Quartzite (Quartzite (composed primarily of SiO2)) — metamorphic

Quartzite

Quartzite (composed primarily of SiO2)

Diorite (Diorite (intermediate intrusive igneous rock)) — igneous

Diorite

Diorite (intermediate intrusive igneous rock)

Lepidolite in Quartz Matrix (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) — mineral

Lepidolite in Quartz Matrix

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

Chert (Banded) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Banded)

Microcrystalline Quartz (SiO2)