Shale
Lutaceous sedimentary rock
sedimentary
Category
Mineral Side Rock
Browse mineral side rock specimens identified by the Rock Identifier community.
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Vesicular Basalt (or Scoria)
Vesicular Basalt
igneous
Sandstone
Sedimentary Rock (Quartz arenite / Lithic sandstone)
sedimentary
Sandstone (Picture Sandstone)
Arenite (primarily SiO2)
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
sedimentary
Sandstone
Sedimentary Rock (Quartz Sandstone)
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
Sedimentary Rock Fragments
Clastic Sedimentary Rock
sedimentary
Quartz in Matrix (possibly Basalt or Siltstone host)
Silicon Dioxide (SiO2) in Host Rock
mineral
Sandstone
Sedimentary Rock (Quartz Arenite)
sedimentary
Shale
Shale (claystone/mudstone)
sedimentary
Sandstone (Lithic Wacke)
Clastic sedimentary rock (primarily SiO2 with rock fragments)
sedimentary
Basalt (Vesicular or Porphyritic River Pebble)
Mafic Volcanic Rock (Aphanitic to Porphyritic Basalt)
igneous
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral side of metamorphic/igneous sources
Conglomerate
Clastic Sedimentary Rock
sedimentary
Shale
Shale (clastic sedimentary rock)
Sedimentary
Sandstone
Arenite (clastic sedimentary rock)
sedimentary
Granite
Felsic intrusive igneous rock
igneous
Granite
Felsic intrusive igneous rock
igneous
Shale
Lutaceous sedimentary rock
sedimentary
Sandstone
Arenite (SiO2 principal)
sedimentary
Geode or Concretion
Silica-filled nodule (likely SiO2)
sedimentary
Geode half
Geode (often quartz/chalcedony based)
sedimentary or igneous
Quartz Geode
Silicon Dioxide (SiO2) in a sedimentary or volcanic host
mineral
Sandstone with Quarzite clasts
Arenite (SiO2 based)
sedimentary
Wishing Rock (Quartz Vein in Host Rock)
Silicon dioxide (SiO2) vein in various host rocks
Igneous/Sedimentary/Metamorphic with Mineral Vein
Vesicular Basalt (or Scoraceous Basalt)
Basalt (Vesicular texture)
igneous
Slate with Quartz Vein
Foliated Metamorphic Rock (Mainly Quartz, Muscovite, Chlorite)
metamorphic
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (primary component SiO2)
sedimentary
Sandstone (with potentially high Feldspar/Arkose content)
Clastic sedimentary rock (SiO2 dominated)
sedimentary
Assorted Beach Rocks and Pebbles
Various (Granite, Basalt, Quartz, Conglomerate, etc.)
igneous, sedimentary, metamorphic
Shale
Laminated Fissile Pelite
sedimentary
Quartz Vein in Hematitic Siltstone
Hydrothermal Quartz (SiO2) in Ferriferous Matrix
metamorphic
Banded Slate or Siltstone with Quartz/Calcite Veins
Protolith-derived Siltstone or Slate (varies based on degree of metamorphism)
metamorphic
Granite Cobble
Granite
igneous
Granite
Granite (felsic intrusive igneous rock)
igneous
Peach Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Banded Sandstone (Beach Pebble)
Quartz Arenite Sandstone
sedimentary