Sandstone (with Iron Staining)
Clastic sedimentary rock (SiO2 with Fe2O3 oxides)
Category
Browse not a rock (animated character) specimens identified by the Rock Identifier community.
Sandstone (with Iron Staining)
Clastic sedimentary rock (SiO2 with Fe2O3 oxides)
Amazonite
Amazonite (KAlSi3O8 - Microcline)
Crushed Limestone
Calcite-rich Sedimentary Rock (CaCO3)
Chalcedony
Cryptocrystalline Quartz (SiO2)
Common Opal with Host Rock
Opal (Hydrated silica, SiO2·nH2O)
Fluorite Tower
Fluorite (Calcium Fluoride - CaF2)
Fluorite (Green)
Calcium Fluoride (CaF2)
Fluorite (Rainbow Fluorite Point)
Calcium Fluoride (CaF2)
Vesicular Basalt
Basalt
Sandstone
Arenite (composed primarily of SiO2)
Basalt
Mafic Volcanic Rock (composed of Plagioclase Feldspar and Pyroxene)
Basalt River Stone
Basalt
Banded Agate (Orca Agate)
Silicon Dioxide (SiO2) - Chalcedony variety
Rose Quartz
Silicon dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Red Jasper
Silicon Dioxide (SiO2) - variety Jasper
Dyed Pumice
Vesicular Rhyolite (Artificial Coloration Addition)
Tektite (likely Indochinite)
Tektite (high-silica impact glass)
Dalmation Stone
Peralkaline Rock (mixed silicate minerals)
Obsidian
Obsidian (Volcanic Glass) SiO2 (70% or more)
Quartzite Pebble
Quartzite (SiO2)
Schist
Chlorite/Mica Schist
Quartzite (Pink/Red variety)
Quartzite (SiO2 with iron oxide impurities)
Desert Rose (also known as Sand Rose)
Gypsum (CaSO4·2H2O) or Barite (BaSO4) with sand inclusions
Calcite
Calcite (Mineral; CaCO₃)
Nephrite Jade
Nephrite (a variety of the mineral actinolite within the amphibole group); Chemical Formula: Ca2(Mg,Fe)5Si8O22(OH)2
Herkimer Diamond (Quartz)
Silicon Dioxide (SiO2)
Moss Agate
Silicon dioxide (SiO2) with inclusions of hornblende or chlorite
Amazonite
Potassium Feldspar (KAlSi3O8)
Basalt
Basalt (Composition primarily Plagioclase feldspar, Pyroxene, and Olivine)
Petoskey Stone
Hexagonaria percarinata (Fossilized Coral)
Granite with Epidote
Granite, containing quartz, feldspar, and epidote
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Gneiss (with Quartz and Mica)
Gneiss
Amazonite
K(AlSi3O8) - Potassium Feldspar (Microcline variant)
Amazonite
Triklinic Potassium Feldspar (KAlSi3O8)
Quartz (Druzy/Macro-crystalline)
Silicon Dioxide (SiO2)
Jasper
Jasper (Silicate - SiO2)
Black Jasper (Black Onyx substitute)
Silicon Dioxide (SiO2) with carbonaceous impurities
Jasper (Red Jasper)
Silicon Dioxide (SiO₂)
Blue Agate (Dyed)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Clear Quartz
Silicon Dioxide (SiO2)
Piddock bored rock (Boring Stone)
Ichnofossil-bearing Limestone or Mudstone (trace fossils by Pholadidae)