Drill Core Samples (Varied Lithology)
Multi-lithological core samples (containing potential granite, marble, and phyllite/schist sequence)
igneous, sedimentary, and metamorphic
Category
Mineral Side Rock
Browse mineral side rock specimens identified by the Rock Identifier community.
Learn about Mineral Side Rock in the encyclopedia
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Sandstone (Micaceous)
Clastic Sedimentary Rock (primarily SiO2 with Mica)
sedimentary
Sandstone
Arenite (Sedimentary Rock)
sedimentary
Sandstone
Arenite
sedimentary
Sandstone (Ferruginous)
Arenite (Siliclastic Sedimentary Rock)
sedimentary
Quartzite Pebble
Quartzite (mostly SiO2)
metamorphic
Milky Quartz with Chlorite Schist Inclusions
Quartz (SiO2) with Chlorite Group silicates (typically (Mg,Fe)3(Si,Al)4O10(OH)2)
metamorphic
Sandstone (Weathered Cobble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
sedimentary
Quartz (Clear/Smoky Geode fragment)
Silicon Dioxide (SiO2)
mineral
Sandstone with Concretions / Liesegang Rings
Arenite with iron oxide banding
sedimentary
Xenolith in Basalt
Mafic Igneous Rock with Felsic Inclusion
igneous
Shale
Argillite / Shale
sedimentary
Serpentine
Antigorite, Lizardite, or Chrysotile (Mg3Si2O5(OH)4)
metamorphic
Quartz (Druzy)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (SiO2 based)
sedimentary
Shale
Argillaceous Rock
sedimentary
Basalt
Basalt
Igneous
Porphyritic Basalt (Drill Core)
Porphyritic Basalt with Plagioclase Phenocrysts
igneous
N/A - Non-Geological Item
not a rock/mineral
Basalt with Granite Inclusions (Xenoliths)
Mafic igneous rock (Basalt) with Sialic minerals
igneous
Sandstone (Painted)
Arenite (primarily SiO2)
sedimentary
Sandstone with Quartz Vein
Arenite with SiO2 intrusion
sedimentary
Quartz Druzy (Geode Fragment)
Silicon Dioxide (SiO2)
mineral
Red Sandstone
Arenite (Iron-rich)
sedimentary
Sandstone (lithic wacke)
Arenite / Lithic Wacke (mostly SiO2 with rock fragments)
sedimentary
Sandstone (likely Greywacke or Lithic Sandstone)
Arenite / Wacke
sedimentary
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic volcanic rock)
igneous
Druzy Quartz on Chert/Chalcedony
Silicon Dioxide (SiO2)
mineral
Shale or Slaty Mudstone
Argillaceous sedimentary rock
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Milky Quartz with Country Rock contact
Silicon Dioxide (SiO2) in contact with Metamorphic/Igneous rock
mineral
Gneiss (Metamorphic Pebble)
Gneissic Metamorphic Rock
metamorphic
Sandstone
Arenite (predominantly SiO2 quartz grains)
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Dark-colored Igneous Rock (likely Basalt or Diabase)
Basalt (extrusive igneous) or Diabase (intrusive igneous)
Igneous Rock
Sandstone (Ferruginous)
Arenite with Iron Oxide (Limonite/Hematite) coating
sedimentary
Sandstone (with Iron Staining)
Arenite (primarily SiO2 with Fe2O3/FeO(OH) oxides)
sedimentary
Granodiorite (Weathered)
Granodiorite
igneous
Sandstone (with secondary weathering/concretion)
Arenite (composed primarily of Quartz, SiO2)
sedimentary
Breciated Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Shale
Fissile Siliciclastic Sedimentary Rock
sedimentary