Unakite
Epidotized Granite
Category
Browse man made rock (technosol) specimens identified by the Rock Identifier community.
Unakite
Epidotized Granite
Gneiss
Gneiss
Granite
Phaneritic Felsic Igneous Rock (primarily Quartz, Feldspar, and Mica)
Quartzite River Pebble
Quartzite (primarily SiO2)
Granite
Granite
Quartzite (Quartz-rich Cobble)
Quartzite (SiO2)
Glauconitic Sandstone
Glauconitic Sandstone (contains (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)
Basalt
Basalt (Aphanitic-to-porphyritic mafic volcanic rock)
Limestone with Quartz or Calcite Veining
Calcium Carbonate (CaCO3) matrix with SiO2 or CaCO3 inclusions
Unakite
Unakite Lepidolite
Unakite
Epidotized Granite (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH) and KAlSi3O8)
Druzzy Quartz on Matrix
Silicon Dioxide (SiO2)
Breciated Chert
Brecciated Chert (Microcrystalline Quartz, SiO2)
Sandstone (likely Quartzose Sandstone)
Arenite (primarily SiO2)
Sandstone (Ferruginous)
Sandstone (primarily SiO2 with Fe2O3 cement)
Ruby in Zoisite
Ruby (Corundum, Al2O3) in Zoisite (Calcium aluminum silicate hydroxide, Ca2Al3(SiO4)3(OH)) with some Hornblende
Agate (Carnelian-Blue Agate mix)
Silicon Dioxide (SiO2)
Sandstone (likely River-tumbled Picture Sandstone)
Arenite (predominantly SiO2 with iron oxide impurities)
Sandstone
Arenite (composed primarily of SiO2)
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Quartzite
Quartzite (SiO2)
Basalt River Pebble
Mafic volcanic rock (Basalt)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Sandstone
Arenite
Sandstone (Ferruginous)
Arenite (Fe2O3 rich)
Sandstone
Arenite (primarily SiO2)
Basalt River Stone
Basalt (Aphanitic Mafic Igneous Rock)
Sandstone (Water-worn Pebble)
Clastic Sedimentary Rock (primarily SiO2)
Scoria (Lava Rock)
Scoria
Pink Granite
Phaneritic Plutonic Felsic Igneous Rock (Granite)
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
Sandstone (likely Quartzose Sandstone)
Arenite (composed primarily of SiO2)
Sandstone
Arenite (SiO2 primarily)
Sandstone (Yellow/Tan Sandstone)
Arenite (primarily Quartz, SiO2)
Red Sandstone
Arenite (primarily Quartz, SiO2, with Iron Oxide cementing agent)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (SiO2 based)
Sandstone (likely Quartzose)
Arenite (primarily SiO2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone with Calcite Vein
Clastic sedimentary rock (primarily SiO2) with Calcium Carbonate (CaCO3) infilling
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
Chert (Jasper variety)
Silicon Dioxide (SiO2)