Basalt with Calcite Veins
Basalt (containing CaCO3 inclusions)
Category
Browse sedimentary (secondary classification for a weathered mineral specimen) specimens identified by the Rock Identifier community.
Basalt with Calcite Veins
Basalt (containing CaCO3 inclusions)
Almandine Garnet in Matrix
Almandine (Fe3Al2(SiO4)3)
Chalcopyrite in Quartz (Gossan/Iron Hat)
CuFeS2 (Chalcopyrite) with SiO2 (Quartz)
Sandstone (Painted)
Arenite (primarily SiO2)
Amygdaloidal Rhyolite
Amygdaloidal felsic extrusive rock
Chalcedony (River Stone)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Jasper with Iron Staining
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (Nodular)
Chert (Microcrystalline Quartz, SiO2)
Jasper
Jasper (Silicon Dioxide, SiO2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Carnelian Agate
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Chalcedony (Grey/White Agate)
Silicon Dioxide (SiO₂)
Sandstone
Arenite (Sedimentary Rock)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Iron Oxide cement)
Gneiss (Metamorphic Cobble)
Gneiss
Sandstone (Banded)
Clastic sedimentary rock (primarily SiO2)
Chert (with Quartz Vein)
Chert (Siliceous sedimentary rock, predominantly Microcrystalline Quartz SiO2)
Magnetite
Iron(II,III) oxide (Fe3O4)
Shale
Shale (clastic sedimentary rock)
Chert (Flint Nodules)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (specifically a Chert Nodule or Flint)
Cryptocrystalline Quartz (SiO2)
Chert Breccia
Brecciated Chert (Microcrystalline Silica)
Agate
Chalcedony (Silicon Dioxide, SiO2)
Banded Calcite (often sold as Yellow Aragonite or Onyx)
Calcium Carbonate (CaCO3)
Chert (Field Stone)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chrysocolla in Matrix
Chrysocolla (Cu,Al)2H2Si2O5(OH)4·nH2O
Septarian Nodule (Dragon Stone)
Septarian concretion (composition: CaCO3 - Calcite, Aragonite, and Siderite/Limestone)
Dendritic Jasper
Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions
Jasper
Jasper (Cryptocrystalline variety of Quartz, SiO2)
Ocean Jasper
Orbicular Jasper (Silicon Dioxide with impurities like Hematite and Chlorite, SiO2)
Chert (Flint variety)
Chert (SiO2)
Sandstone
Arenite
Limestone
Calcium Carbonate (CaCO3)
Agate Geode
Chalcedony (cryptocrystalline SiO2)
Yellow Aventurine
Quartz (Silicon Dioxide) with Mica inclusions (SiO2)
Malachite
Cu2CO3(OH)2 (Copper Hydroxide Carbonate)
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium and/or Vanadium impurities
Blue Chalcedony
Silicon Dioxide (SiO2)
Quartz (Chert/Chalcedony flake)
Silicon Dioxide (SiO2)