Pink Fluorite
Fluorite (Calcium Fluoride) - CaF2
mineral
Category
Synthetic Polymer (Polylactic Acid)
Browse synthetic polymer (polylactic acid) specimens identified by the Rock Identifier community.
Learn about Synthetic Polymer (Polylactic Acid) in the encyclopedia
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Pyrite (on host rock/ore)
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Black Onyx
Silicon Dioxide (SiO2)
mineral
Orange Calcite (Banded Honey Calcite)
Calcium Carbonate (CaCO3)
mineral
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Black Onyx
Onyx (Silicon Dioxide, SiO2)
mineral
Fossiliferous Limestone (Coquina / Shell Limestone)
Bioclastic Limestone (CaCO3)
sedimentary
Bornite
Bornite (Cu5FeS4)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite Cobble
Metamorphic Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Optical Calcite (Iceland Spar)
Calcium Carbonate (CaCO3)
mineral
Oolitic Limestone (Egg Stone)
Oolite (Chemical sedimentary rock, primarily CaCO3)
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Azurite and Malachite on Matrix
Azurite: Cu3(CO3)2(OH)2; Malachite: Cu2CO3(OH)2
mineral
Oolite (Ooid Limestone)
Ooidal Limestone (comprised of CaCO3)
sedimentary
Basalt
Basalt (principally Plagioclase and Pyroxene)
igneous
Wonderstone (Liesegang Sandstone)
Silicified Sandstone with Liesegang Rings (SiO2 + FeO(OH))
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Quartzite
Quartzite (SiO2 silicon dioxide)
metamorphic
Fossiliferous Limestone (Coquina)
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Red Granite
Phaneritic Plutonic Rock (High Potassium Feldspar)
igneous
Fossiliferous Chert (Gryphaea Fossil)
Silicon Dioxide (SiO2) with Calcitic Mollusk Remnants
sedimentary
Quartzite
Metamorphosed Quartz Sandstone
metamorphic
Chalk
Calcium Carbonate (CaCO3)
sedimentary
Lapis Lazuli
Lazurite-rich metamorphic rock (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2
metamorphic
Banded Chert
Cryptocrystalline Quartz (SiO2)
sedimentary
Bornite
Bornite (Cu5FeS4)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
White Marble
Calcite-rich Metasomatized Carbonate (CaCO3)
metamorphic
Limestone with Calcite Veins
Calcium Carbonate (CaCO3) - Sparry Limestone
sedimentary
Marble
Recrystallized Carbonate Rock (CaCO3)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral