Rock Identifier

Category

Sedimentary (Base), Then Artificial

Browse sedimentary (base), then artificial specimens identified by the Rock Identifier community.

Ethiopian Opal (Welo Opal) (Hydrated Amorphous Silica (SiO2·nH2O)) — mineraloid

Ethiopian Opal (Welo Opal)

Hydrated Amorphous Silica (SiO2·nH2O)

Iron-stained Quartz (Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3/FeO(OH))) — mineral

Iron-stained Quartz

Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3/FeO(OH))

Slate with Iron Staining (Low-grade Metamorphic Mudstone (Slate)) — metamorphic

Slate with Iron Staining

Low-grade Metamorphic Mudstone (Slate)

Labradorite (Labradorite ((Ca,Na)(Al,Si)4O8)) — mineral

Labradorite

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

Moss Agate (Silicon Dioxide with inclusions (SiO2 + Fe/Mn/Mg)) — mineral

Moss Agate

Silicon Dioxide with inclusions (SiO2 + Fe/Mn/Mg)

Granite Water-Worn Pebble (Phaneritic intrusive igneous rock (Felsic)) — igneous

Granite Water-Worn Pebble

Phaneritic intrusive igneous rock (Felsic)

Granite Pebble (Felsic Intrusive Igneous Rock) — igneous

Granite Pebble

Felsic Intrusive Igneous Rock

Porphyritic Basalt (Basalt with plagioclase phenocrysts) — igneous

Porphyritic Basalt

Basalt with plagioclase phenocrysts

Granite (Granite) — igneous

Granite

Granite

Slag (Industrial By-product) (Glassy silicate or metallic smelting residue) — mineral-like (anthropogenic)

Slag (Industrial By-product)

Glassy silicate or metallic smelting residue

mineral-like (anthropogenic)

Granite Pebble (Granite (composed primarily of Quartz SiO2, Feldspar KAlSi3O8, and Mica)) — igneous

Granite Pebble

Granite (composed primarily of Quartz SiO2, Feldspar KAlSi3O8, and Mica)

Basalt (Basalt (principally Plagioclase Feldspar and Pyroxene)) — igneous

Basalt

Basalt (principally Plagioclase Feldspar and Pyroxene)

River Cobble (Quartzite) (Quartzite (SiO2)) — metamorphic

River Cobble (Quartzite)

Quartzite (SiO2)

Greenstone (Metabasalt / Chlorite Schist) — metamorphic

Greenstone

Metabasalt / Chlorite Schist

Granodiorite (Granodiorite) — igneous

Granodiorite

Granodiorite

Basalt (Basalt (Aphanitic Mafic Igneous)) — igneous

Basalt

Basalt (Aphanitic Mafic Igneous)

Basalt River Cobble (Extrusive Mafic Igneous Rock (primarily Plagioclase and Pyroxene)) — igneous

Basalt River Cobble

Extrusive Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Basalt (Mafic volcanic rock (various silicate minerals including Pyroxene and Plagioclase)) — igneous

Basalt

Mafic volcanic rock (various silicate minerals including Pyroxene and Plagioclase)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt (Basalt (primarily composed of Plagioclase feldspar and Pyroxene)) — igneous

Basalt

Basalt (primarily composed of Plagioclase feldspar and Pyroxene)

Basalt (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Ferruginous Quartz (Iron-stained Quartzite) (Silicon Dioxide (SiO2) with Hematite/Limonite impurities) — metamorphic

Ferruginous Quartz (Iron-stained Quartzite)

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

Diorite (Phaneritic Intermediate Plutonic Rock) — Igneous

Diorite

Phaneritic Intermediate Plutonic Rock

Olivine-bearing Basalt / Scoria (Mafic Igneous Rock (primarily (Mg, Fe)2SiO4)) — igneous

Olivine-bearing Basalt / Scoria

Mafic Igneous Rock (primarily (Mg, Fe)2SiO4)

Basalt with Phenocrysts (Porphyritic Basalt) (Porphyritic Basalt (primarily Plagioclase and Pyroxene)) — igneous

Basalt with Phenocrysts (Porphyritic Basalt)

Porphyritic Basalt (primarily Plagioclase and Pyroxene)

Basalt (Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)) — Igneous

Basalt

Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)

Diorite (Salt and Pepper Rock) (Diorite) — igneous

Diorite (Salt and Pepper Rock)

Diorite

Basalt (Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)) — Igneous

Basalt

Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)

Porphyritic Andesite (Intermediate Volcanic Rock - Andesite) — Igneous

Porphyritic Andesite

Intermediate Volcanic Rock - Andesite

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

Basalt (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Vesicular Basalt (Extrusive mafic igneous rock (primarily Plagioclase feldspar and Pyroxene)) — igneous

Vesicular Basalt

Extrusive mafic igneous rock (primarily Plagioclase feldspar and Pyroxene)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Basalt River Cobble (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt River Cobble

Basalt (Mafic Extrusive Igneous Rock)

Greenstone (Metabasalt / Greenschist facies rock) — metamorphic

Greenstone

Metabasalt / Greenschist facies rock

Diorite (Salt and Pepper Rock) (Diorite) — igneous

Diorite (Salt and Pepper Rock)

Diorite

Diorite (Diorite (Intermediate intrusive igneous rock)) — igneous

Diorite

Diorite (Intermediate intrusive igneous rock)

Vesicular Basalt with Quartz (Vesicular Basalt (SiO2 inclusions)) — igneous

Vesicular Basalt with Quartz

Vesicular Basalt (SiO2 inclusions)