Granite
Phaneritic plutonic felsic rock
igneous
Category
Man Made (Synthetic Rock)
Browse man made (synthetic rock) specimens identified by the Rock Identifier community.
Basalt
Extrusive mafic igneous rock
igneous
Basalt
Extrusive mafic igneous rock
igneous
Granite
Phaneritic Plutonic Felsic Rock
igneous
Basalt
Extrusive mafic igneous rock
igneous
Scoria (Lava Rock)
Scoria (Mafic Volcanic Rock)
igneous
Scoria (Lava Rock)
Scoria (Vesicular Basaltic Rock)
Igneous
Scoria (Lava Rock)
Mafic Vesicular Volcanic Rock
igneous
Lava Rock (Basalt)
Basalt (extrusive igneous rock)
igneous
Scoria (Lava Rock)
Scoria (vesicular basaltic rock)
igneous
Diorite
Diorite (an intrusive igneous rock)
igneous
Basalt
Extrusive mafic igneous rock
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Basalt
Extrusive mafic igneous rock
igneous
Basalt
Extrusive mafic igneous rock
igneous
Sandstone (with potential iron-oxide weathering)
Arenite (SiO2 based)
sedimentary
Basalt (River Stone)
Aphanitic Mafic Igneous Rock
igneous
Sandstone (Weathered)
Arenite (primarily SiO2)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Sandstone (Banded)
Clastic Sedimentary Rock: Arenite
sedimentary
Granite
Phaneritic Felsic Igneous Rock
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Basalt
Basalt (principally Plagioclase and Pyroxene)
igneous
Basalt
Basalt (composition predominately plagioclase feldspar and pyroxene)
igneous
Chert (Jasper variation)
Silicon Dioxide (SiO2)
sedimentary
Granite
Granite (Felsic Plutonic Rock)
Igneous
Amygdaloidal Basalt with Epidote
Vesicular Basalt with secondary Epidote/Quartz mineral infill
igneous
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within Metasedimentary or Igneous matrix
mineral
Quartz (Druzy)
Silicon Dioxide (SiO2)
mineral
Quartz Vein in Sedimentary Rock
Silicon Dioxide (SiO2) with host Chert or Limestone
mineral
Ocean Jasper
Orbicular Jasper (Silicon Dioxide with impurities), SiO2
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Conglomerate
Conglomerate (SiO2, Al2O3, Fe2O3, CaCo3)
sedimentary
Chert / Flint
Chert (Cryptocrystalline Silica, SiO2)
sedimentary
Quartz (Milky/Yellowish variety)
Silicon Dioxide (SiO2)
mineral
Chert (Jasper)
Microcrystalline Quartz (SiO2) with iron oxide impurities
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Concretion
Septarian concretion (likely containing Calcite or Siderite)
sedimentary
Chert Breccia
Brecciated Microcrystalline Quartz (SiO2)
sedimentary
Dyed Agate
Silicon Dioxide (SiO2)
mineral