Wishing Stone (Basalt/Greywacke with Quartz Vein)
Basalt or Siltstone with SiO2 (Quartz) hydrothermal intrusion
Category
Browse mineral within sedimentary rock specimens identified by the Rock Identifier community.
Wishing Stone (Basalt/Greywacke with Quartz Vein)
Basalt or Siltstone with SiO2 (Quartz) hydrothermal intrusion
Petrified Wood
Silicified Wood (SiO2)
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Gneiss
Gneiss
Chert (Pink Jasper variant)
Microcrystalline Quartz (SiO2)
Granite
Phaneritic Igneous Rock (composed primarily of Quartz SiO2, Alkali Feldspar (K,Na)AlSi3O8, and Plagioclase Feldspar)
Chert (Flint)
Silicon Dioxide (SiO2)
Granite Gneiss with Garnet
Garnetiferous Gneiss
Amethyst (Quartz)
Amethyst (Silicon Dioxide with Iron impurities, SiO2)
Red Sandstone
Arenite (ferruginous sandstone)
Amethyst
Amethyst (Silicon Dioxide, SiO2)
Chert (Nodule)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (or Flint)
Chert (Sedimentary Cryptocrystalline Sio2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
White Opal (Common)
Hydrated Silica (SiO2·nH2O)
Banded Chert
Microcrystalline Quartz (SiO2)
Granite
Phaneritic Felsic Intrusive Igneous Rock
Arkosic Sandstone
Arkose (Clastic Sedimentary Rock)
Limestone
Calcareous Sedimentary Rock (CaCO3)
Conglomerate
Clastic Sedimentary Rock (Conglomerate)
Limestone
Calcareous sedimentary rock (CaCO3)
Limestone
Calcareous sedimentary rock (CaCO3)
Coal (likely Bituminous or Lignite)
Organic Sedimentary Rock (Carbonaceous)
Limestone
Calcareous Sedimentary Rock (CaCO3)
River Pebble Gravel
Hydrothermally modified Clastic Sediment (mainly Quartzite and Chert)
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Quartz
Quartz (SiO₂ - Silicon Dioxide)
Honey Calcite (Yellow Calcite)
Calcium Carbonate (CaCO3)
Quartz (Milky or Clear Quartz fragment)
Silicon Dioxide (SiO2)
Laterite
Laterite (no specific mineral formula as it's a rock type)
Clear Quartz (or Rock Crystal)
Quartz (SiO₂)
Chert (and associated Sedimentary rocks)
Microcrystalline Silica (SiO2)
Chert (Yellow Jasper/Flint)
Silicon Dioxide (SiO2)
Jasper River Stone
Silicon Dioxide with Iron Oxide impurities (SiO2 + Fe2O3)
Gneiss
Gneiss (High-grade regional metamorphic rock)
Quartz (Double-Terminated)
Silicon Dioxide (SiO2)
Yellow Agate
Chalcedony (cryptocrystalline Quartz), SiO2
Red Brecciated Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Agate (specifically, a slice of a Blue Lace or Chalcedony Agate nodule)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Ironstone Concretion (Moqui Marble Type)
Goethite/Hematite-cemented Sandstone Concretion
Jasper (Tumbled)
Silicon Dioxide (SiO₂)
Amethyst
Amethyst (SiO2 - Silicon Dioxide with iron impurities)