Petrified Wood
Silicified wood, primarily composed of Quartz (SiO2)
Mineral, often found in sedimentary deposits
Category
Mineral, Often Found In Sedimentary Deposits
Browse mineral, often found in sedimentary deposits specimens identified by the Rock Identifier community.
Ironstone (likely Limonite or Goethite nodule)
Hydrothermally altered Ferric Hydroxide (FeO(OH)·nH2O)
sedimentary
Hematite
Iron(III) oxide (Fe2O3)
mineral
Limonite (Iron Ore Congcretion)
Limonite (a mixture of hydrated iron(III) oxide-hydroxides, FeO(OH)·nH2O)
mineral
Ironstone with Limonite/Goethite coating
Ferruginous Sedimentary Rock (contains Limonite FeO(OH)·nH2O)
sedimentary
Chert (Chalcedony/Agate variety)
Silicon Dioxide (SiO2)
sedimentary
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminium phosphate)
mineral
Botryoidal Hematite (Kidney Ore)
Iron(III) oxide (Fe2O3)
Mineral
Petrified Wood
Silicified Wood (primarily Chalcedony or Quartz, SiO2)
sedimentary
Sulfur on Quartz
Native Sulfur (S8) with Quartz (SiO2)
mineral
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Lazulite
Lazulite (MgAl2(PO4)2(OH)2)
mineral
Jasper
Jasper (Cryptocrystalline Quartz; SiO2)
sedimentary
Specular Hematite (Specularite)
Hematite (Alpha-Fe2O3)
mineral
Fluorite (Green)
Calcium Fluoride (CaF2)
mineral
Azurite and Malachite on Matrix
Azurite: Cu3(CO3)2(OH)2; Malachite: Cu2CO3(OH)2
mineral
Dinosaur Fossil (Skull)
Dinosauria fossilis (Petrified Hydroxyapatite / Calcium Carbonate)
sedimentary
Turquoise in Matrix
Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O
mineral
Chrysocolla
Chrysocolla: Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O
mineral
Ferruginous Sandstone
Arenite with Iron Oxide matrix (Fe2O3)
sedimentary
Chrysocolla in Matrix
Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O)
mineral
Turquoise in Matrix
Hydrous phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O
mineral
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
mineral
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Psilomelane (Black Hematite/Manganese Ore)
Barium Manganese Oxide (Formula: BaMn9O18(OH)4)
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
Mineral
Rhodochrosite
Manganese carbonate (MnCO3)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Psilomelane (Manganese Ore)
Psilomelane (Ba,H2O)2Mn5O10
mineral
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Red Jasper
Jasper (Silicon Dioxide) - SiO2
sedimentary/mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Limonite (Iron Ore)
Limonite (̑FeO(OH)·nH₂O)
sedimentary
Rhodochrosite
Manganese carbonate (MnCO3)
mineral
Rhodochrosite
Manganese carbonate (MnCO3)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
mineral
Milky Quartz
Quartz (SiO2)
Mineral
Basalt with Secondary Mineralization (Likely Zeolites or Calcite)
Aphanitic mafic volcanic rock with secondary mineral inclusions (e.g., CaAl2Si3O10·3H2O for Scolecite)
igneous
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral