Rock Identifier

Category

Igneous (Anthropogenic)

Browse igneous (anthropogenic) specimens identified by the Rock Identifier community.

Amygdaloidal Basalt (Amygdaloidal Basalt (Host rock) with Quartz or Calcite amygdules) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt (Host rock) with Quartz or Calcite amygdules

Pumice (Pumicite (Amorphous Volcanic Glass)) — igneous

Pumice

Pumicite (Amorphous Volcanic Glass)

Pumice (Pumice (a highly vesicular volcanic rock)) — igneous

Pumice

Pumice (a highly vesicular volcanic rock)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Vesicular Basalt (Basalt with vesicular texture) — igneous

Vesicular Basalt

Basalt with vesicular texture

Apache Tears (Obsidian) (Volcanic Glass (SiO2)) — igneous

Apache Tears (Obsidian)

Volcanic Glass (SiO2)

Kimberlite with Diamond (Kimberlite (Diamond formula: C)) — igneous

Kimberlite with Diamond

Kimberlite (Diamond formula: C)

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Snowflake Obsidian (Vitreous volcanic silicate rock (SiO2) with Spherulite inclusions) — igneous

Snowflake Obsidian

Vitreous volcanic silicate rock (SiO2) with Spherulite inclusions

Pumice (Vesicular volcanic glass (primarily SiO2)) — igneous

Pumice

Vesicular volcanic glass (primarily SiO2)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt (Water-worn Pebble) (Mafic Volcanic Rock (High in Fe and Mg)) — igneous

Basalt (Water-worn Pebble)

Mafic Volcanic Rock (High in Fe and Mg)

Pink Granite (Granite (Phaneritic Quartz-Feldspar Rock)) — igneous

Pink Granite

Granite (Phaneritic Quartz-Feldspar Rock)

Black Obsidian (Obsidian (Volcanic Glass)) — igneous

Black Obsidian

Obsidian (Volcanic Glass)

Snowflake Obsidian (Hydrated Volcanic Glass (primarily SiO2) with Cristobalite inclusions) — igneous

Snowflake Obsidian

Hydrated Volcanic Glass (primarily SiO2) with Cristobalite inclusions

Basalt (Polished pebble) (Basalt (Aphanitic mafic volcanic rock)) — igneous

Basalt (Polished pebble)

Basalt (Aphanitic mafic volcanic rock)

Pink Granite (Phaneritic Plutonic Felsic Rock (K-feldspar rich)) — igneous

Pink Granite

Phaneritic Plutonic Felsic Rock (K-feldspar rich)

Pumice (Pumice (Vesicular volcanic glass)) — Igneous

Pumice

Pumice (Vesicular volcanic glass)

Porphyritic Rhyolite (Red Porphyry) (Porphyritic Rhyolite (Felsic volcanic rock)) — igneous

Porphyritic Rhyolite (Red Porphyry)

Porphyritic Rhyolite (Felsic volcanic rock)

Obsidian (Obsidian (Amorphous volcanic glass, SiO2 rich)) — igneous

Obsidian

Obsidian (Amorphous volcanic glass, SiO2 rich)

Pumice (Highly vesicular rhyolite/dacite (Amorphous glass)) — igneous

Pumice

Highly vesicular rhyolite/dacite (Amorphous glass)

Basalt with Scoria and potential Olivine/Pyroxene inclusions (Vesicular Basalt) — igneous

Basalt with Scoria and potential Olivine/Pyroxene inclusions

Vesicular Basalt

Diabase (also known as Dolerite) (Diabase) — igneous

Diabase (also known as Dolerite)

Diabase

Dalmatian Stone (Peralkaline Quartz-Feldspar Rock with Arfvedsonite) — igneous

Dalmatian Stone

Peralkaline Quartz-Feldspar Rock with Arfvedsonite

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt with Quartz/Zeolite Inclusions (Porphyritic Basalt (SiO2 with Aluminosilicates)) — igneous

Basalt with Quartz/Zeolite Inclusions

Porphyritic Basalt (SiO2 with Aluminosilicates)

Pink Granite (Granite (Alkali-feldspar granite)) — igneous

Pink Granite

Granite (Alkali-feldspar granite)

Apache Tear (Hydrated Obsidian (Natural Volcanic Glass)) — igneous

Apache Tear

Hydrated Obsidian (Natural Volcanic Glass)

Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

Unknown Rock Specimen — igneous

Unknown Rock Specimen

Granodiorite (Granodiorite (Na,Ca)(Al,Si)4O8) — igneous

Granodiorite

Granodiorite (Na,Ca)(Al,Si)4O8

Bumblebee Jasper (Hydrothermal Volcanic Rock (Primarily Calcite with Orpiment - As2S3, Realgar, and Pyrite)) — igneous

Bumblebee Jasper

Hydrothermal Volcanic Rock (Primarily Calcite with Orpiment - As2S3, Realgar, and Pyrite)

Celadonite in Amygdaloidal Basalt (K(Mg,Fe2+)(Fe3+,Al)Si4O10(OH)2 (Celadonite mineral) within a Basalt matrix) — igneous

Celadonite in Amygdaloidal Basalt

K(Mg,Fe2+)(Fe3+,Al)Si4O10(OH)2 (Celadonite mineral) within a Basalt matrix

Basalt (Basalt (Mafic Extrusive)) — igneous

Basalt

Basalt (Mafic Extrusive)

Rhyolite (Rhyolite) — igneous

Rhyolite

Rhyolite

Granitic Pegmatite (Pegmatite (composed primarily of Quartz, Feldspar, and Muscovite mica)) — igneous

Granitic Pegmatite

Pegmatite (composed primarily of Quartz, Feldspar, and Muscovite mica)

Vesicular Basalt (Scoria) (Extrusive Mafic Volcanic Rock (FeO-SiO2-MgO)) — Igneous

Vesicular Basalt (Scoria)

Extrusive Mafic Volcanic Rock (FeO-SiO2-MgO)

Scoria (Lava Rock) (Scoria (vesicular basaltic rock)) — igneous

Scoria (Lava Rock)

Scoria (vesicular basaltic rock)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Apache Tear (Obsidian) (Obsidian (Hydrated Amorphous Silica, SiO2 + MgO/Fe3O4)) — igneous

Apache Tear (Obsidian)

Obsidian (Hydrated Amorphous Silica, SiO2 + MgO/Fe3O4)

Basalt (Vesicular) (Mafic Volcanic Rock (rich in Magnesium and Iron)) — Igneous

Basalt (Vesicular)

Mafic Volcanic Rock (rich in Magnesium and Iron)