Rock Identifier

Category

Amorphous Solid

Browse amorphous solid specimens identified by the Rock Identifier community.

Amygdaloidal Basalt (Basalt with secondary amygdule minerals (likely Epidote or Chlorite)) — igneous

Amygdaloidal Basalt

Basalt with secondary amygdule minerals (likely Epidote or Chlorite)

Mixed Quartz and River Pebbles (Stone Collection) (Mixed assortment containing mainly Silicon Dioxide (SiO2)) — igneous, sedimentary, metamorphic, and mineral

Mixed Quartz and River Pebbles (Stone Collection)

Mixed assortment containing mainly Silicon Dioxide (SiO2)

igneous, sedimentary, metamorphic, and mineral

Basalt (Beach Pebble) (Extrusive mafic igneous rock) — igneous

Basalt (Beach Pebble)

Extrusive mafic igneous rock

Vesicular Basalt (Mafic Volcanic Rock (Basalt)) — igneous

Vesicular Basalt

Mafic Volcanic Rock (Basalt)

Red Jasper (Jasper (Silicon Dioxide, SiO2 with Fe2O3 inclusions)) — mineral

Red Jasper

Jasper (Silicon Dioxide, SiO2 with Fe2O3 inclusions)

Jasper with Dendritic Inclusions (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Jasper with Dendritic Inclusions

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Scoria (Lava Rock) (Aphanitic vesicular mafic igneous rock) — igneous

Scoria (Lava Rock)

Aphanitic vesicular mafic igneous rock

Red Jasper (Skull Carving) (Jasper, a cryptocrystalline variety of Quartz (SiO2)) — sedimentary

Red Jasper (Skull Carving)

Jasper, a cryptocrystalline variety of Quartz (SiO2)

Basalt with Vesicles (Aphanitic Mafic Volcanic Rock (Basalt)) — igneous

Basalt with Vesicles

Aphanitic Mafic Volcanic Rock (Basalt)

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

Vesicular Basalt

Extrusive mafic igneous rock (primarily Plagioclase feldspar and Pyroxene)

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

K2 Jasper (K2 Granite) (Azurite in Granite (Al2Cu3(CO3)2(OH)2 in NaAlSi3O8)) — igneous

K2 Jasper (K2 Granite)

Azurite in Granite (Al2Cu3(CO3)2(OH)2 in NaAlSi3O8)

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Leopard Skin Jasper (Silicon Dioxide (SiO2) with various inclusions) — sedimentary

Leopard Skin Jasper

Silicon Dioxide (SiO2) with various inclusions

Vesicular Basalt (River Rock) (Afanitic Vesicular Basalt) — igneous

Vesicular Basalt (River Rock)

Afanitic Vesicular Basalt

Quartz (Milky/Bull Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Bull Quartz)

Silicon Dioxide (SiO2)

Pumice (Pumice (Vesicular volcanic glass)) — igneous

Pumice

Pumice (Vesicular volcanic glass)

Scoria (Extrusive Igneous Rock (Basaltic/Andesitic Composition)) — igneous

Scoria

Extrusive Igneous Rock (Basaltic/Andesitic Composition)

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

Yellow Jasper

Silicon dioxide (SiO2) with iron oxide inclusions

Tree Agate (Dendritic Chalcedony (SiO2)) — sedimentary

Tree Agate

Dendritic Chalcedony (SiO2)

Scoria (Vesicular Basalt / Scoria (Mafic volcanic rock)) — igneous

Scoria

Vesicular Basalt / Scoria (Mafic volcanic rock)

Vesicular Basalt (Extrusive Mafic Igneous Rock (composed of Plagioclase feldspar, Pyroxene, and Olivine)) — igneous

Vesicular Basalt

Extrusive Mafic Igneous Rock (composed of Plagioclase feldspar, Pyroxene, and Olivine)

Vesicular Rhyolite (Extrusive igneous rock (high-silica rhyolite)) — igneous

Vesicular Rhyolite

Extrusive igneous rock (high-silica rhyolite)

Pumice (Pumice (Vitreous pyroclastic rock)) — igneous

Pumice

Pumice (Vitreous pyroclastic rock)

Sunstone (Plagioclase Feldspar (Na,Ca)(Al,Si)4O8) — Mineral

Sunstone

Plagioclase Feldspar (Na,Ca)(Al,Si)4O8

Basalt (Vesicular Basalt (Mafic volcanic rock)) — Igneous

Basalt

Vesicular Basalt (Mafic volcanic rock)

Jasper (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Jasper

Jasper (Silicon Dioxide, SiO2)

Amygdaloidal Basalt (Amygdaloidal Basalt) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt

Red Jasper (Silicon Dioxide (SiO2) with Hematite inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Quartz (Iron-stained) (Silicon Dioxide (SiO2) with Iron Oxide impurities) — mineral

Quartz (Iron-stained)

Silicon Dioxide (SiO2) with Iron Oxide impurities

Aragonite (Banded Calcite / 'Mexican Onyx') (Aragonite (Calcium Carbonate - CaCO3)) — mineral

Aragonite (Banded Calcite / 'Mexican Onyx')

Aragonite (Calcium Carbonate - CaCO3)

Scoria (Lava Rock) (Scoria) — igneous

Scoria (Lava Rock)

Scoria

Vesicular Basalt (Scoria) (Mafic extrusive volcanic rock (predominantly Plagioclase feldspar and Pyroxene)) — igneous

Vesicular Basalt (Scoria)

Mafic extrusive volcanic rock (predominantly Plagioclase feldspar and Pyroxene)

Pumice (Pumice (Vesicular Rhyolite/Dacite)) — igneous

Pumice

Pumice (Vesicular Rhyolite/Dacite)

Scoria (Lava Rock) (Mafic Vesicular Volcanic Rock) — igneous

Scoria (Lava Rock)

Mafic Vesicular Volcanic Rock

Limestone with Calcite Veins (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone with Calcite Veins

Sedimentary Calcium Carbonate (CaCO3)

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

Basalt (Vesicular)

Mafic Volcanic Rock (rich in Magnesium and Iron)

Basalt with Scoria (Mafic Volcanic Rock (Basalt/Scoria)) — igneous

Basalt with Scoria

Mafic Volcanic Rock (Basalt/Scoria)

Dalmation Stone (Dalmation Jasper) (Peralkaline rock (primarily Feldspar and Quartz with Arfvedsonite spots)) — igneous

Dalmation Stone (Dalmation Jasper)

Peralkaline rock (primarily Feldspar and Quartz with Arfvedsonite spots)

Granitic Quartz or Pegmatite (Quartz with Orthoclase Feldspar (SiO2 + KAlSi3O8)) — igneous

Granitic Quartz or Pegmatite

Quartz with Orthoclase Feldspar (SiO2 + KAlSi3O8)

Granite (Pink/Red Granite) (Phaneritic Igneous Rock (primarily SiO2, KAlSi3O8, NaAlSi3O8)) — igneous

Granite (Pink/Red Granite)

Phaneritic Igneous Rock (primarily SiO2, KAlSi3O8, NaAlSi3O8)

Basalt (Vesicular and Scoria) (Basalt (extrusive volcanic rock)) — igneous

Basalt (Vesicular and Scoria)

Basalt (extrusive volcanic rock)