Conglomerate
Conglomerate (clastic sedimentary rock)
Category
Browse man made material (simulated mineral) specimens identified by the Rock Identifier community.
Conglomerate
Conglomerate (clastic sedimentary rock)
Petrified Wood (Black / Carbonized)
Silicon Dioxide (Quartz/Chalcedony replacing Organic Matter)
Sandstone
Clastic Sedimentary Rock
Petrified Wood
Silicified Wood (primarily Chalcedony/Quartz, SiO2)
Bauxite
Bauxite (Al2O3·2H2O)
Green Greenstone / Celadonite-bearing Metamorphic Rock
Greenschist / Celadonite / Serpentinitic pebble
Biotite (Mica)
K(Mg,Fe)3AlSi3O10(OH,F)2
Sandstone
Sedimentary Rock (Quartzose Sandstone)
Sandstone (Limonitic/Iron-stained)
Sandstone (containing Quartz, SiO2, and Limonite, FeO(OH)·nH2O)
Red Sandstone
Arenite (Ferruginous Sandstone)
Sandstone (Ferruginous)
Arenite with Iron Oxide cement
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (SiO2 major component)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 cementation)
Sandstone
Quartzose Sandstone (Sedimentary Rock)
Sandstone
Sedimentary Rock (Quartz arenite/Arkose)
Sandstone
Quartz Arenite / Sedimentary Rock
Sandstone (Pebble)
Sandstone (SiO2 dominated with minor feldspar/clay)
Sandstone
Arenite (SiO2 based with mineral cements)
Sandstone (Weathered)
Arenite (typically SiO2 as quartz grains)
Sandstone (Weathered Pebble)
Arenite (SiO2 primarily)
Sandstone
Arenite
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Sandstone
Quartz Arenite / Clastic Sedimentary Rock
Sandstone
Arenite (compositionally various, primarily SiO2)
Sandstone Pebble (River Rock)
Arenite (primarily SiO2)
Sandstone (likely Arkosic)
Arenite (SiO2 with KAlSi3O8)
Sandstone
Arenite (SiO2 principal component)
Sandstone
Arenite (primarily SiO2)
Banded gneiss
Gneiss, chiefly quartz–feldspar–mica (variable composition)
Clear Quartz (Faceted)
Silicon dioxide (SiO2)
Sandstone with Manganese Oxide Patina
Clastic Sedimentary Rock (primarily SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Sandstone
Sedimentary Rock (Quartz arenite/Arkosic sandstone)
Sandstone (Water-worn Cobble)
Arenite (variable composition, primarily SiO2)
Milky quartz
Quartz (silicon dioxide, SiO₂)
Moss Agate
Silicon Dioxide (SiO2) with inclusions
Yellow-green jasper or serpentine-rich rock
Likely microcrystalline quartz (SiO₂) with iron-bearing and/or serpentine minerals; exact identification requires testing
Tumbled blue stone, likely sodalite
Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂; possibly blue calcite or dyed material
Tumbled green aventurine (probable)
Quartz, SiO₂, with fuchsite mica inclusions
Likely tumbled jasper or iron-rich chert
Microcrystalline quartz (SiO₂), potentially hematite/goethite-bearing
Polished red banded stone, likely rhodonite
Rhodonite — manganese inosilicate, MnSiO₃; possibly rhodochrosite or dyed quartz
Quartz with Iron Oxide Staining
Silicon Dioxide (SiO2)