Sandstone
Arenite (SiO2 based)
sedimentary
Category
Mineral Based Composite
Browse mineral based composite specimens identified by the Rock Identifier community.
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Sandstone (Quartzose)
Arenite (SiO2 based)
sedimentary
Buffalo Nickel (Indian Head Nickel)
Cupronickel (75% Copper, 25% Nickel)
mineral (processed alloy)
Mixed Gemstone Collection
SiO2 (Quartz varieties) and Biogenic CaCO3 (Nacre)
mineral
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (likely Fossilized Wood or Concrete Simulacrum)
Arenite / Silicified Wood / Anthropogenic Concrete
sedimentary
Sandstone (Quartzose)
Arenite (SiO2 based)
sedimentary
Sandstone (likely Arkosic or Lithic Sandstone)
Arenite (SiO2 based with mineral inclusions)
sedimentary
Ruby zoisite (anyolite)
Zoisite with corundum (ruby) and commonly amphibole; Ca₂Al₃(SiO₄)₃(OH)
metamorphic
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (Pebble)
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Polished blue copper mineral, likely chrysocolla or dyed howlite
Chrysocolla: hydrated copper phyllosilicate, approximately (Cu,Al)₂H₂Si₂O₅(OH)₄·nH₂O; visual identification is uncertain from the image
mineral
Sandstone
Arenite (SiO2 based with mineral cement)
sedimentary
Sandstone (likely Arkosic or Quartzose)
Arenite (SiO2 based with mineral inclusions)
sedimentary
Sandstone Pebble
Arenite (SiO2 based)
sedimentary
Sandstone (Quartz Sandstone)
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone with Manganese Dendrites
Clastic Sedimentary Rock (SiO2 based with MnO2 inclusions)
sedimentary
Sandstone (with biological crust)
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Geode (Unopened)
Quartz/Chalcedony concretion
sedimentary
Hand-Drawn Trading Card (Amateur Artwork)
Cellulose-based substrate with wax/graphite/ink deposit (n/a for minerals)
Organic/Synthetic Composite (Paper and Pigment)
Sandstone
Arenite (specifically Iron-stained Quartz Sandstone)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone Pebble
Arenite (SiO2 based)
sedimentary
Sandstone (Quartzose)
Arenite (SiO2 based)
sedimentary