Selenite / Gypsum
Gypsum (CaSO4·2H2O)
Category
Browse mineral on sedimentary specimens identified by the Rock Identifier community.
Selenite / Gypsum
Gypsum (CaSO4·2H2O)
Shale / Mudstone
Sedimentary rock (Claystone / Mudstone / Shale)
Sandstone
Arenite
Sandstone
Arenite (SiO2 dominant)
Sandstone (Weathered Fragment)
Clastic Sedimentary Rock
Sandstone (Tumbled / Rounded)
Sedimentary Rock (Quartz arenite)
Concretion
Sedimentary Concretion
Banded Sedimentary Rock
Sedimentary rock with Liesegang banding
Shale / Mudstone
Laminated Mudrock (Siliciclastic Sedimentary Rock)
Limestone (or Sandstone)
Calcium Carbonate (CaCO3) / Silica (SiO2)
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
Blue Calcite
Calcite (Calcium Carbonate, CaCO3)
Sandstone (Ferruginous)
Clastic sedimentary rock (SiO2 with Fe2O3)
Pyrite
Iron Sulfide (FeS2)
Apatite
Calcium phosphate fluoride/chloride, Ca5(PO4)3(F,Cl,OH)
Sandstone
Clastic Sedimentary Rock
Shale
Shale (Consolidated fine-grained clay/silt)
Sandstone (likely Arkosic or Lithic)
Clastic Sedimentary Rock (SiO2 with accessory minerals)
Shale or Slaty Mudstone
Argillaceous sedimentary rock
Sandstone
Arenite (SiO2 based)
Conglomerate Pebble (with Chert / Quartz)
Sedimentary Conglomerate / Breccia Pebble
Sandstone
Arenite (SiO2 principal)
Sandstone (Quartz-rich)
Arenite (SiO2)
Dendritic sandstone
Sandstone with Manganese Oxide dendrites
Sandstone
Sedimentary Clastic Rock (Quartz Arenite)
Quartz-veined Sandstone Pebble
Quartzose Sandstone with Quartz Veinlets
Chalcedony (Botryoidal)
Silicon Dioxide (SiO2)
Chert / Quartz Pebble
Silicon Dioxide (SiO2)
Banded Sedimentary Rock
Stratified Siliciclastic / Arenite or Siltstone with Mineral Bands
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Sedimentary Pebble
Sedimentary Rock Fragment
Clear Quartz
SiO2 (Silicon Dioxide)
Limonite
FeO(OH)•nH2O
Blue Apatite
Calcium Fluorophosphate - Ca5(PO4)3F
Hematite
Iron(III) oxide (Fe2O3)
Rough amber-like brown mineral specimen
Uncertain from photograph; possibly iron-stained quartz, common opal, or resinous amber
Limonite / Goethite (Iron Ore Mineral nodule)
FeO(OH)·nH2O / FeO(OH)
Quartz-veined Sandstone
Quartzite-veined Arenite / SiO2 and quartz sand
Red Sandstone Pebble
Sedimentary Quartz Arenite / Arkose
Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
Septarian Pebble
Septarian nodule / Concretion
Blue Apatite
Fluorapatite (Ca5(PO4)3F)