Rock Identifier

Category

Igneous Rock (Volcanic Glass)

Browse igneous rock (volcanic glass) specimens identified by the Rock Identifier community.

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

igneous
Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

igneous
Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

igneous
Indigo Gabbro (Gabbro (Mafic Intrusive Rock)) — igneous

Indigo Gabbro

Gabbro (Mafic Intrusive Rock)

igneous
Pink Granite (Granite (Phaneritic intrusive rock)) — igneous

Pink Granite

Granite (Phaneritic intrusive rock)

igneous
Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

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

Pink Granite

Granite (Felsic Plutonic Rock)

igneous
Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

igneous
Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

igneous
Red Granite (Granite (Felsic Plutonic Rock)) — igneous

Red Granite

Granite (Felsic Plutonic Rock)

igneous
Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

igneous
Granite (Phaneritic Plutonic Felsic Rock) — igneous

Granite

Phaneritic Plutonic Felsic Rock

igneous
Granite (Phaneritic Plutonic Felsic Rock) — igneous

Granite

Phaneritic Plutonic Felsic Rock

igneous
Granite (Phaneritic plutonic rock (Felsic)) — igneous

Granite

Phaneritic plutonic rock (Felsic)

igneous
Chalcedony (Common Opal/Chert variety) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Common Opal/Chert variety)

Silicon Dioxide (SiO2)

mineral
Schist (Crystalline Metamorphic Rock (Schistose)) — metamorphic

Schist

Crystalline Metamorphic Rock (Schistose)

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

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Carnelian Agate (Red Chalcedony (SiO2 with Iron Oxide impurities)) — mineral

Carnelian Agate

Red Chalcedony (SiO2 with Iron Oxide impurities)

mineral
Apricot Agate (Silicon Dioxide (SiO2) - Chalcedony variety) — mineral

Apricot Agate

Silicon Dioxide (SiO2) - Chalcedony variety

mineral
Greenstone (Metabasalt) — metamorphic

Greenstone

Metabasalt

metamorphic
Banded Agate (often called Brown Agate or Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Banded Agate (often called Brown Agate or Chalcedony)

Silicon Dioxide (SiO2)

mineral
Carnelian Agate (Silicon Dioxide (SiO2) - Variety of Chalcedony) — mineral

Carnelian Agate

Silicon Dioxide (SiO2) - Variety of Chalcedony

mineral
Sodalite (Sodalite (Sodium Aluminum Silicate Chloride), Na8(Al6Si6O24)Cl2) — Mineral

Sodalite

Sodalite (Sodium Aluminum Silicate Chloride), Na8(Al6Si6O24)Cl2

Mineral
Chalcedony (Silicon Dioxide (SiO₂)) — mineral

Chalcedony

Silicon Dioxide (SiO₂)

mineral
Granite (Granite (composed primarily of Quartz SiO2 and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8))) — igneous

Granite

Granite (composed primarily of Quartz SiO2 and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8))

igneous
Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

metamorphic
Wishing Stone (Basalt with Quartz Vein) (Basalt containing a microcrystalline quartz (SiO2) or calcite vein) — igneous

Wishing Stone (Basalt with Quartz Vein)

Basalt containing a microcrystalline quartz (SiO2) or calcite vein

igneous
Quartz (pebble) (Quartz (SiO₂)) — Mineral

Quartz (pebble)

Quartz (SiO₂)

Mineral
Granite Gneiss (Felsic Gneiss) — metamorphic

Granite Gneiss

Felsic Gneiss

metamorphic
Druzy Quartz (on Quartzite or Chert) (Silicon Dioxide (SiO2)) — mineral

Druzy Quartz (on Quartzite or Chert)

Silicon Dioxide (SiO2)

mineral
Blue Lace Agate (Silicon Dioxide (SiO₂), a variety of Chalcedony) — mineral

Blue Lace Agate

Silicon Dioxide (SiO₂), a variety of Chalcedony

mineral
Granite (with mafic xenolith) (Phaneritic Felsic Plutonic Rock) — Igneous

Granite (with mafic xenolith)

Phaneritic Felsic Plutonic Rock

Igneous
Granite (Phaneritic plutonic felsic rock) — igneous

Granite

Phaneritic plutonic felsic rock

igneous
Granite (Phaneritic Plutonic Rock (Granite)) — igneous

Granite

Phaneritic Plutonic Rock (Granite)

igneous
Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

igneous
Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

igneous
Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

igneous
Granite Cobble (Granite (Felsic Plutonic Rock)) — igneous

Granite Cobble

Granite (Felsic Plutonic Rock)

igneous
Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

igneous
Granite (Thin Section) (Granite (Felsic Plutonic Rock)) — igneous

Granite (Thin Section)

Granite (Felsic Plutonic Rock)

igneous
Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

igneous
Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

igneous