Sandstone
Arenite (SiO2 based)
sedimentary
Category
Mineral Based Composite
Browse mineral based composite specimens identified by the Rock Identifier community.
Learn about Mineral Based Composite in the encyclopedia
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Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Gemstone Art Panel (Jade, Quartz, and Soapstone)
Composite of silicate minerals (Nephrite, Quartz, Talc/Soapstone)
mineral
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (likely Quartz Sandstone)
Arenite (SiO2 based)
sedimentary
Sandstone (likely Arkosic)
Arenite (SiO2 based)
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)
Asphalt aggregate pavement
Bituminous asphalt concrete containing crushed stone aggregate
sedimentary
Geode (Unopened)
Quartz/Chalcedony concretion
sedimentary
Sandstone River Cobble
Arenite (SiO2 based)
sedimentary
Sandstone (Quartzose)
Arenite (SiO2 based)
sedimentary
Sandstone with Manganese Dendrites
Clastic Sedimentary Rock (SiO2 based with MnO2 inclusions)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (Water-worn Cobble)
Arenite (SiO2 based)
sedimentary
Sandstone (Stream-rounded)
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (Quartz-rich)
Arenite (SiO2 based)
sedimentary
Sandstone (Quartzose)
Arenite (SiO2 based)
sedimentary
Jasper and Mudstone Composite
Silicified Sedimentary Rock / Jasperoid Pebble
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based with mineral cements)
sedimentary
Sandstone
Arenite (SiO2 based with mineral cement)
sedimentary
Sandstone (with Possible Iron Staining/Crust)
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Polished multicolored stone bead bracelet
Likely dyed or treated agate/jasper, chiefly microcrystalline quartz (SiO₂)
mineral
Polished tiger iron
Tiger iron: banded quartz (SiO₂), red jasper, and crocidolite-derived fibrous iron oxides
metamorphic
Sandstone
Arenite (specifically Iron-stained Quartz Sandstone)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone with Tafoni Weathering
Arenite (SiO2 based)
sedimentary
Sandstone (River Pebble)
Arenite (SiO2 based)
sedimentary
Sandstone (likely Quartzose Sandstone)
Arenite (SiO2 based)
sedimentary
Dinosaur Fossil (Tyrannosaurus rex skull replica/specimen)
Tyrannosaurus rex (fossilized in permineralized sedimentary matrix)
sedimentary
Jasper and Chalcedony Nodule
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Polished chrysocolla-matrix stone (probable)
Chrysocolla, hydrated copper aluminosilicate; likely mixed with quartz, turquoise, or copper minerals
mineral
Turquoise cabochon ring
Turquoise — hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O
gemstone
Buffalo Nickel (Indian Head Nickel)
Cupronickel (75% Copper, 25% Nickel)
mineral (processed alloy)
Carved Gemstone Mushroom
Quartz / Feldspar composite (Carved lapidary art)
gemstone
Dragon Blood Jasper
Epidote-bearing Quartz Microcrystalline Aggregate
metamorphic
Polished banded calcite (often sold as “onyx marble” or Mexican onyx)
Banded calcite, CaCO₃ (sometimes aragonite); decorative “onyx marble” is not true quartz onyx
sedimentary
Desert Rose
Baryte (BaSO4) or Gypsum (CaSO4·2H2O) with sand inclusions
mineral