Mica Schist
Mica Schist (Composition typically contains Muscovite: KAl2(AlSi3O10)(OH)2 or Biotite: K(Mg,Fe)3AlSi3O10(OH)2 along with Quartz and Feldspar)
Category
Browse mineral on sedimentary specimens identified by the Rock Identifier community.
Mica Schist
Mica Schist (Composition typically contains Muscovite: KAl2(AlSi3O10)(OH)2 or Biotite: K(Mg,Fe)3AlSi3O10(OH)2 along with Quartz and Feldspar)
Carnelian
Carnelian (Silicon Dioxide, SiO2)
Chert Nodule in Limestone
Chert (Microcrystalline Quartz, SiO2) and Limestone (Calcium Carbonate, CaCO3)
Garnet Schist
Almandine Garnet Schist
Quartz (Smoky/Clear variety)
Silicon Dioxide (SiO2)
Quartz
Silicon dioxide (SiO2)
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Honey Calcite
Calcium Carbonate (CaCO3)
Schist
Mica Schist
Limonite (Iron Ore)
Hydrous ferric oxides (FeO(OH)·nH2O)
Sandstone (likely Quartzose Sandstone)
Arenite (primarily SiO2)
Shale or Argillite
Shale (sedimentary) / Argillite (metamorphic)
Banded Iron Formation (BIF) / Iron Ore
Banded Iron Formation (composed primarily of Hematite (Fe2O3) and Magnetite (Fe3O4) with Quartz/Chert)
Red Sandstone
Arenite (with Iron Oxide / Hematite cementation)
Pyrite in Quartz
Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)
Banded Iron Formation (BIF)
Banded Iron Formation
Sandstone (Weathered)
Arenite (primarily SiO2)
Jasper
Jasper (Silicon Dioxide, SiO2)
Chert (Chalcedony/Agate)
Microcrystalline Quartz (SiO2)
Dalmatian Stone
Dalmatian Jasper (Peralkaline Quartz-Feldspar Rock)
Ironstone with Pyrite
Ferruginous Sandstone (Fe2O3) with minor Sulfide minerals (FeS2)
Sandstone
Arenite (composed primarily of SiO2)
Sandstone (Red Sandstone)
Arenite (SiO2 based with Fe2O3 staining)
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Jasper (Willow Creek/Desert style)
Silicon Dioxide (SiO2) with iron and clay impurities
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
Quartz (likely Yellow/Orange variety, possibly Citrine or Chalcedony with iron staining)
Quartz (SiO₂)
Magnetite
Magnetite (Fe3O4)
Sandstone (with biological crust)
Arenite (SiO2 based)
Banded Sandstone (Wonderstone)
Sandstone with Liesegang Rings (SiO2 with Iron Oxides)
Muscovite Mica
Muscovite (KAl₂(AlSi₃O₁₀)(F,OH)₂))
Sandstone
Arenite (composed primarily of SiO2, or Silicon Dioxide)
Granitic Gneiss
Gneiss (High-grade regional metamorphic rock)
Pumice or Tufa/Travertine
Pumice (if igneous) or Calcareous Tufa (if sedimentary)
Gneiss (specifically Micaceous Gneiss)
Gneiss (High-grade Regional Metamorphic Rock)
Orange Calcite
Calcium Carbonate (CaCO3)
Garnet (Almandine variety)
Almandine Garnet (Fe3Al2(SiO4)3)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
Banded Calcite (Mexican Onyx)
Calcium Carbonate (CaCO3)
Quartz pebble (Quartztite fragment)
Silicon Dioxide (SiO2)