Rock Identifier

Category

Organic (Paper And Cellulose)

Browse organic (paper and cellulose) specimens identified by the Rock Identifier community.

Himalayan Pink Salt (Halite) (Halite (Sodium Chloride, NaCl)) — sedimentary

Himalayan Pink Salt (Halite)

Halite (Sodium Chloride, NaCl)

Red Jasper (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Red Jasper

Jasper (Silicon Dioxide, SiO2)

Jasper (Jasper (Silica, SiO2)) — sedimentary

Jasper

Jasper (Silica, SiO2)

Emerald with Matrix (Emerald in Mica Schist) (Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities) — mineral

Emerald with Matrix (Emerald in Mica Schist)

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Charoite (Charoite, K(Ca,Na)2Si4O10(OH,F)·H2O) — metamorphic

Charoite

Charoite, K(Ca,Na)2Si4O10(OH,F)·H2O

Rhodonite (Manganese Silicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Lapis Lazuli (Complex mixture of Lazurite ((Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2), Calcite, and Pyrite) — metamorphic

Lapis Lazuli

Complex mixture of Lazurite ((Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2), Calcite, and Pyrite

Bauxite (Bauxite (mainly Al(OH)3, AlO(OH))) — sedimentary

Bauxite

Bauxite (mainly Al(OH)3, AlO(OH))

Sandstone (Quartzose) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)

Crinoid Stem Fossil (in matrix) (Crinoid (Class Crinoidea)) — sedimentary

Crinoid Stem Fossil (in matrix)

Crinoid (Class Crinoidea)

Nuummite (Orthoamphibole (Anthophyllite-Gedrite composition)) — metamorphic

Nuummite

Orthoamphibole (Anthophyllite-Gedrite composition)

Carnelian Agate (Silicon Dioxide (SiO2)) — mineral

Carnelian Agate

Silicon Dioxide (SiO2)

Limestone (Calcareous sedimentary rock (primarily Calcium Carbonate, CaCO3)) — sedimentary

Limestone

Calcareous sedimentary rock (primarily Calcium Carbonate, CaCO3)

Fossil Coral (Cnidaria fossil (often Calcium Carbonate / CaCO3)) — sedimentary

Fossil Coral

Cnidaria fossil (often Calcium Carbonate / CaCO3)

Amazonite (Potassium Feldspar (Microcline) - K(AlSi3O8)) — mineral

Amazonite

Potassium Feldspar (Microcline) - K(AlSi3O8)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Sandstone with Iron Oxide (Arenite (SiO2 with Fe2O3 staining)) — sedimentary

Sandstone with Iron Oxide

Arenite (SiO2 with Fe2O3 staining)

Tourmalinated Quartz (Quartz (SiO2) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4) inclusions) — mineral

Tourmalinated Quartz

Quartz (SiO2) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4) inclusions

Sandstone (Ferruginous) (Arenite (Fe-oxide cemented)) — sedimentary

Sandstone (Ferruginous)

Arenite (Fe-oxide cemented)

Sandstone (likely Quartzose) (Arenite (SiO2 principal mineral)) — sedimentary

Sandstone (likely Quartzose)

Arenite (SiO2 principal mineral)

Fossilized Angel Wing Shell (Cyrtopleura costata) — sedimentary

Fossilized Angel Wing Shell

Cyrtopleura costata

Wood Paneling (Engineered Wood / Plywood Paneling) — not a rock

Wood Paneling

Engineered Wood / Plywood Paneling

Geode (unopened nodule) (Silicon Dioxide (SiO2) Nodule) — sedimentary

Geode (unopened nodule)

Silicon Dioxide (SiO2) Nodule

Jasper (Iron-stained Quartzite/Chert) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Jasper (Iron-stained Quartzite/Chert)

Silicon Dioxide (SiO2) with iron oxide inclusions

Moss Agate Geode Sphere (Silicon Dioxide (SiO2) - Chalcedony with Chlorite or Manganese inclusions) — mineral

Moss Agate Geode Sphere

Silicon Dioxide (SiO2) - Chalcedony with Chlorite or Manganese inclusions

Citrine (Silicon dioxide (SiO2)) — mineral

Citrine

Silicon dioxide (SiO2)

Gold in Quartz Matrix (Native Gold (Au) with Quartz (SiO2) and Slate/Shale) — mineral

Gold in Quartz Matrix

Native Gold (Au) with Quartz (SiO2) and Slate/Shale

Jasper (Cryptocrystalline Quartz (SiO2)) — sedimentary

Jasper

Cryptocrystalline Quartz (SiO2)

Turquoise (Rough) (Hydrated phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise (Rough)

Hydrated phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O

Banded Iron Formation (BIF) / Tiger Iron (Banded Iron Formation containing Hematite (Fe2O3) and Magnetite (Fe3O4)) — sedimentary

Banded Iron Formation (BIF) / Tiger Iron

Banded Iron Formation containing Hematite (Fe2O3) and Magnetite (Fe3O4)

Limonite (Iron Ore) (Limonite (FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Schist (Mica Schist (Composition typically involves Muscovite, Biotite, Quartz, and Feldspar)) — metamorphic

Schist

Mica Schist (Composition typically involves Muscovite, Biotite, Quartz, and Feldspar)

Vesicular Basalt (Scoria) (Vesicular Basalt) — igneous

Vesicular Basalt (Scoria)

Vesicular Basalt

Carnelian Agate (Carnelian (Silicon Dioxide - SiO2)) — mineral

Carnelian Agate

Carnelian (Silicon Dioxide - SiO2)

Labradorite (Gray Tumbled) (Labradorite (Ca,Na)(Al,Si)4O8) — mineral

Labradorite (Gray Tumbled)

Labradorite (Ca,Na)(Al,Si)4O8

River Cobble (likely Basalt) (Mafic Igneous Rock (Aphanitic)) — Igneous

River Cobble (likely Basalt)

Mafic Igneous Rock (Aphanitic)

Granitic Pegmatite (Pegmatite (composed primarily of Quartz, Feldspar, and Muscovite mica)) — igneous

Granitic Pegmatite

Pegmatite (composed primarily of Quartz, Feldspar, and Muscovite mica)

Pink Lepidolite (Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)) — mineral

Pink Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Blue Agate (Dyed) (Silicon Dioxide (SiO2) - Variety of Chalcedony) — mineral

Blue Agate (Dyed)

Silicon Dioxide (SiO2) - Variety of Chalcedony

Sandstone (Sandstone (Sedimentary rock composed of silicate grains)) — sedimentary

Sandstone

Sandstone (Sedimentary rock composed of silicate grains)

Emerald (Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities) — mineral

Emerald

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

Sandstone (Arenite) — sedimentary

Sandstone

Arenite