Dendritic Jasper
Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions
Category
Browse mineral within a sedimentary rock specimens identified by the Rock Identifier community.
Dendritic Jasper
Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions
Sandstone (likely with Quartz Veining)
Arenite (primarily SiO2)
Red Jasper
Jasper (a cryptocrystalline variety of Quartz, SiO₂)
Sandstone (Calcareous Sandstone)
Calcareous Sandstone (primarily SiO2 with CaCO3 cement)
Schist
Mica Schist
Ferruginous Sandstone
Arenite with Iron-Oxide cement (Fe2O3 · nH2O)
Gold Nugget
Native Gold (Au)
Sandstone
Arenite (Clastic Sedimentary Rock)
Sandstone (with potential iron-oxide weathering)
Arenite (SiO2 based)
Sandstone (likely Arkosic)
Clastic Sedimentary Rock (primarily SiO2 with Feldspar)
Sandstone (with minor quartz and possible clay components)
Clastic Sedimentary Rock (SiO2 dominated)
Agate
Silicon Dioxide (SiO2) - Chalcedony variety
Dalmatian Jasper
Dalmatian Stone (a microcrystalline quartz and feldspar rock with arfvedsonite)
Blue Chalcedony (likely dyed Agate)
Silicon Dioxide (SiO₂)
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic Extrusive)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone
Arenite (SiO2 based with quartz grains)
Opal
Hydrated Silica (SiO2·nH2O)
Diamond in Kimberlite
Kimberlite host rock with C (Carbon) inclusion
Sandstone (Ferruginous)
Arenite (SiO2 with Fe2O3 inclusions)
Clear Quartz
Silicon dioxide (SiO2)
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Almandine Garnet in Matrix
Almandine Garnet (Fe3Al2(SiO4)3) in Schist/Quartz Matrix
Gneiss (with Quartzite and Biotite)
Gneiss containing SiO2 (Quartz), K(Mg,Fe)3AlSi3O10(OH)2 (Biotite), and (K,Na,Ca)AlSi3O8 (Feldspar)
Green Aventurine in Host Rock
SiO2 (Quartz with Fuchsite inclusions)
Amethyst (Faceted)
Amethyst (Silicon Dioxide with iron impurities, SiO2)
Sandstone (Ferruginous)
Clastic Sedimentary Rock (SiO2 with FeO/Fe2O3)
Larimar
Pectolite [NaCa2Si3O8(OH)] with copper substitution
Chert (or Flint)
Chert (a cryptocrystalline variety of quartz, SiO2)
Quartz Geode Fragment
Silicon Dioxide (SiO2) in a Sedimentary Host
Banded Agate
Agate (Silicon Dioxide, SiO2)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrous Phosphate of Copper and Aluminum)
Sandstone (likely River-tumbled Picture Sandstone)
Arenite (predominantly SiO2 with iron oxide impurities)
Sandstone (likely Iron-rich or Arkosic)
Arenite (SiO2 with FeO(OH) or Fe2O3 staining)
Sandstone
Arenite (SiO2 principal component)
Carnelian
Chalcedony (SiO2)
Jasper with Quartz
Silicon Dioxide (SiO2) - Chalcedony variety
Chalcedony (Blue/Grey Lace Agate)
Silicon Dioxide (SiO2)
Sandstone (Quartzite texture)
Arenite (SiO2 secondary)
Unidentifiable Rock Fragment
Amethyst
Silicon Dioxide (SiO2) with iron impurities