Rock Identifier

Category

Sedimentary And Igneous (Mixed)

Browse sedimentary and igneous (mixed) specimens identified by the Rock Identifier community.

Basalt with Mineral Vein (Cobble) (Basalt (with likely Quartz/Calcite vein)) — Igneous

Basalt with Mineral Vein (Cobble)

Basalt (with likely Quartz/Calcite vein)

Granite (Granite (a plutonic igneous rock)) — Igneous

Granite

Granite (a plutonic igneous rock)

Obsidian (Obsidian (volcanic glass, amorphous silica rich rock)) — Igneous

Obsidian

Obsidian (volcanic glass, amorphous silica rich rock)

Obsidian (Volcanic Glass (predominantly SiO2 – Silicon Dioxide, but non-crystalline)) — Igneous

Obsidian

Volcanic Glass (predominantly SiO2 – Silicon Dioxide, but non-crystalline)

Granite (Granite (a common igneous rock)) — igneous

Granite

Granite (a common igneous rock)

Granite (likely a river or beach pebble) (Granite (a felsic intrusive igneous rock primarily composed of quartz, feldspar, and mica)) — Igneous

Granite (likely a river or beach pebble)

Granite (a felsic intrusive igneous rock primarily composed of quartz, feldspar, and mica)

Basalt (Basalt) — igneous

Basalt

Basalt

Granite or Pegmatite with Mica (Granitoid) — igneous

Granite or Pegmatite with Mica

Granitoid

Basalt (Extrusive Mafic Igneous Rock) — igneous

Basalt

Extrusive Mafic Igneous Rock

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

Basalt River Cobble

Basalt (Mafic Igneous Rock)

Granite (Granite (a broadly defined plutonic igneous rock, often more specifically classified as quartz monzonite or granodiorite based on precise mineral percentages)) — igneous

Granite

Granite (a broadly defined plutonic igneous rock, often more specifically classified as quartz monzonite or granodiorite based on precise mineral percentages)

Granite (Granite (a plutonic rock)) — Igneous

Granite

Granite (a plutonic rock)

Crushed Stone (Basalt/Gabbro) (Mafic Igneous Rock (primarily Plagioclase and Pyroxene)) — igneous

Crushed Stone (Basalt/Gabbro)

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Basalt (Basalt (Extrusive Mafic Igneous)) — igneous

Basalt

Basalt (Extrusive Mafic Igneous)

Basalt (Basalt (Mafic igneous rock)) — igneous

Basalt

Basalt (Mafic igneous rock)

Basalt (Basalt (dominated by plagioclase feldspar and pyroxene)) — igneous

Basalt

Basalt (dominated by plagioclase feldspar and pyroxene)

Basalt (Basalt) — igneous

Basalt

Basalt

Basalt River Stones (Aphantic Mafic Igneous Rock (Basalt)) — igneous

Basalt River Stones

Aphantic Mafic Igneous Rock (Basalt)

Basalt (Basalt) — igneous

Basalt

Basalt

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

Basalt (River Cobble)

Basalt (Mafic Extrusive Igneous Rock)

Basalt (Mafic volcanic rock (Basalt)) — igneous

Basalt

Mafic volcanic rock (Basalt)

Andesite (Andesite (Intermediate Volcanic Rock)) — igneous

Andesite

Andesite (Intermediate Volcanic Rock)

Andesite (Andesite (Intermediate Extrusive Volcanic Rock)) — igneous

Andesite

Andesite (Intermediate Extrusive Volcanic Rock)

Andesite (Andesite (Intermediate Volcanic Rock)) — igneous

Andesite

Andesite (Intermediate Volcanic Rock)

Andesite (Andesite (Intermediate Extrusive Volcanic Rock)) — igneous

Andesite

Andesite (Intermediate Extrusive Volcanic Rock)

Andesite (Andesite (contains Plagioclase feldspar, Pyroxene, Hornblende)) — igneous

Andesite

Andesite (contains Plagioclase feldspar, Pyroxene, Hornblende)

Andesite (Andesite (Intermediate Volcanic Rock)) — igneous

Andesite

Andesite (Intermediate Volcanic Rock)

Andesite (Andesite (Intermediate Extrusive Volcanic Rock)) — igneous

Andesite

Andesite (Intermediate Extrusive Volcanic Rock)

River Quartz Cobble (Silicon Dioxide (SiO2)) — mineral

River Quartz Cobble

Silicon Dioxide (SiO2)

Granite (Granite) — Igneous

Granite

Granite

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

Basalt Cobble (Vesicular Basalt (Mafic Extrusive)) — igneous

Basalt Cobble

Vesicular Basalt (Mafic Extrusive)

Basalt (with Brass Inlay) (Basalt (Mafic volcanic rock)) — igneous

Basalt (with Brass Inlay)

Basalt (Mafic volcanic rock)

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

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

Basalt

Basalt (principally Plagioclase Feldspar and Pyroxene)

Basalt with vesicles (Vesicular Basalt) — igneous

Basalt with vesicles

Vesicular Basalt

Basalt (tumbled/water-worn) (Extrusive mafic igneous rock) — igneous

Basalt (tumbled/water-worn)

Extrusive mafic igneous rock

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

Basalt

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

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

Basalt

Basalt (primarily Plagioclase feldspar and Pyroxene)

Basalt (with possible iron oxide staining) (Mafic Igneous Rock (primarily Plagioclase and Pyroxene)) — igneous

Basalt (with possible iron oxide staining)

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Vesicular Basalt (Extrusive mafic igneous rock) — igneous

Vesicular Basalt

Extrusive mafic igneous rock

Basalt (Basalt) — igneous

Basalt

Basalt