Sandstone
Arenite
Sedimentary
Category
Synthetic (Not A Rock Or Mineral)
Browse synthetic (not a rock or mineral) specimens identified by the Rock Identifier community.
Learn about Synthetic (Not A Rock Or Mineral) in the encyclopedia
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Vesicular Basalt (Scoria)
Basalt with vesicular texture
igneous
Chert with Quartz Veining
Microcrystalline Silica (SiO2)
sedimentary
Painted Rock / Geode Specimen
Silicon Dioxide with artificial pigment coating
mineral
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Sandstone with Quartz Vein
Arenite with Crystalline Silica (SiO2)
sedimentary
Granite
Felsic intrusive igneous rock
igneous
Glacial Cobble with Granite Inclusion
Porphyritic Basalt or Andesite containing Granitic Xenolith
igneous
Sandstone
Clastic Sedimentary Rock
sedimentary
Veined Limestone (Micrite) with Quartz/Calcite Veins
Calcium Carbonate (CaCO3) with Silicate or Carbonate inclusions
sedimentary
Granite
Granite (felsic intrusive igneous rock)
igneous
Vesicular Basalt (or Scoria)
Vesicular Basalt
igneous
Sandstone
Arenite
sedimentary
Banded Sandstone
Arenite (with iron oxide banding)
sedimentary
Quartz (Milky/Crystalline)
Silicon Dioxide (SiO2)
mineral
Sandstone (Ferruginous)
Arenite (Siliclastic Sedimentary Rock)
sedimentary
Desert Rose
Gypsum (CaSO4·2H2O) or Barite (BaSO4)
mineral
Quartz Vein in Sedimentary Matrix
Silicon Dioxide (SiO2) with host rock
mineral
Granite Cobble
Granite
igneous
Quartz Geode
Silicon Dioxide (SiO2)
sedimentary
Granite
Felsic intrusive igneous rock
igneous
Sandstone
Clastic Sedimentary Rock
sedimentary
Moonstone
Orthoclase (Potassium Aluminum Silicate), Formula: (K,Na)AlSi3O8
mineral
Quartz Geode
Silicon Dioxide (SiO2) within a geode
mineral
Sedimentary Rock Fragments
Clastic Sedimentary Rock
sedimentary
Agated Chert
Microcrystalline Quartz (SiO2)
sedimentary
Biotite Mica Schist
Metamorphic Rock containing Biotite K(Mg,Fe)3AlSi3O10(OH)2
metamorphic
Moqui Marble
Hematite-Goethite Concretion
mineral
Vesicular Basalt (or Scoraceous Basalt)
Basalt (Vesicular texture)
igneous
Basalt (Vesicular or Porphyritic River Pebble)
Mafic Volcanic Rock (Aphanitic to Porphyritic Basalt)
igneous
Quartz in Matrix (possibly Basalt or Siltstone host)
Silicon Dioxide (SiO2) in Host Rock
mineral
Sandstone with Concretions / Liesegang Rings
Arenite with iron oxide banding
sedimentary
Shale
Shale (clastic sedimentary rock)
Sedimentary
Gneiss
Foliated Metamorphic Rock (Gneiss)
metamorphic
Sandstone
Sedimentary Rock (Quartz arenite/Arkose)
sedimentary
Slate with Quartz Vein
Foliated Metamorphic Rock (Mainly Quartz, Muscovite, Chlorite)
metamorphic
Gravel and Pebbles
Unconsolidated rock fragments / detrital sediment
sedimentary
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
sedimentary
Sandstone Cobble with Iron Staining
Arenite with Limonite/Hematite staining
sedimentary
Granite
Phaneritic intrusive igneous rock
igneous
Gravel or Crushed Stone
Fragmented Aggregate Stone
sedimentary or igneous fragment
Banded Slate or Siltstone with Quartz/Calcite Veins
Protolith-derived Siltstone or Slate (varies based on degree of metamorphism)
metamorphic