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 (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
Sandstone (Quartz Sandstone)
Arenite (SiO2 based)
sedimentary
Sandstone Pebble
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Moss Agate
Silicon Dioxide with inclusions (SiO2)
mineral
Chert with Chalcedony/Quartz Vug
Cryptocrystalline Silica (SiO2)
sedimentary
Sandstone (likely Arkosic or Lithic Sandstone)
Arenite (SiO2 based with mineral inclusions)
sedimentary
Sandstone (with biological crust)
Arenite (SiO2 based)
sedimentary
Biotite Mica
Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)
mineral
Fossilized Shark Tooth
Bioapatite (Calcium Hydroxyapatite) replacement
mineral
Granite Thin Section
Granitic rock (Phaneritic texture)
igneous
Sandstone (with Possible Iron Staining/Crust)
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (likely Arkosic or Quartzose)
Arenite (SiO2 based with mineral inclusions)
sedimentary
Chalcedony (Grey/White Agate)
Silicon Dioxide (SiO₂)
mineral
Sandstone
Arenite (SiO2 based)
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
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 (SiO2 based with mineral cements)
sedimentary
Sandstone
Arenite (SiO2 based with mineral cement)
sedimentary
Sandstone
Arenite (Sedimentary rock composed of sand-sized grains)
sedimentary
Sandstone
Arenite (SiO2 based with mineral cement)
sedimentary
Carved Gemstone Mushroom
Quartz / Feldspar composite (Carved lapidary art)
gemstone
Black Spinel
Magnesium Aluminum Oxide (MgAl2O4)
mineral
Tree Agate
Silicon Dioxide (SiO2) with Dendritic Inclusions
Mineral
Fossil / Permineralized Bone
Tyrannosaurus rex fossil (Hydroxylapatite replaced by various minerals)
sedimentary
Green Moss Agate
Agate (Silicon Dioxide, SiO2) with inclusions
mineral
Sandstone (Siltstone or Fine-grained)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Quartzite (Aventurine type)
Metamorphosed Quartz Sandstone (SiO2 with inclusions)
metamorphic
Red Moss Agate (Jasper)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Hag Stone
Perforated Sedimentary Rock
sedimentary
Blue-green chrysocolla rough specimen
Chrysocolla, hydrated copper aluminosilicate; commonly associated with malachite, quartz, and limonite
mineral