Pyrite and Fluorite on Quartz (Matrix Specimen)
Iron Disulfide (FeS2) and Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)
mineral
Category
Mineral (Processed Metal)
Browse mineral (processed metal) specimens identified by the Rock Identifier community.
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Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Lapis Lazuli
Lazurite-rich metamorphic rock
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
Mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Seashell Fossil
Gastropoda fossil
fossil
Fossil Shark Tooth
Chondrichthyes (Class)
fossil
Specular Hematite (Specularite)
Hematite (Fe2O3)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Honey Calcite
Calcium Carbonate (CaCO3)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Shark Tooth Fossil
Carcharodonta (order Lamniformes), likely Carcharias spp.
fossil
Greenstone / Epidosite
Metamorphosed Mafic Igneous Rock (Epidote-Chlorite group)
metamorphic
Banded Quartz
Silicon Dioxide (SiO2)
mineral
Schist
Crystalline Schist (often containing Muscovite, Biotte, or Quartz)
metamorphic
Yellow Jasper
Tectosilicates (SiO2) with Goethite/Iron oxide inclusions
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Banded Slate
Slate (Metamorphosed Siltstone/Mudstone)
metamorphic
Mica Schist
Mica Schist (predominantly Muscovite or Biotite sheet silicates)
metamorphic
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron inclusions
sedimentary
Quartz with Iron Oxide Monzonite or Sandstone contact
Quartz (SiO2) with Limonite/Hematite staining
mineral
Sandstone
Arenite (SiO2 based with quartz, feldspar, or lithic fragments)
sedimentary
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Milky Quartz (or Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Celestite (Blue Celestine)
Celestine (Strontium Sulfate, SrSO4)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Granite
Phaneritic plutonic rock (Silica-rich)
igneous
Silicon Carbide (Carborundum)
Moissanite (SiC)
mineral
Tiger's Eye (with Blue Tiger's Eye / Hawk's Eye)
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)
metamorphic
Mixed Rock and Mineral Collection
Various geological specimens
igneous, sedimentary, and metamorphic
Amygdaloidal Basalt with Agate/Zeolite Amygdules
Basalt (extrusive igneous rock) containing secondary mineral fillings
igneous
Pyrite cluster (iron pyrite)
Pyrite, FeS₂
mineral
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with Fe2O3 cement)
sedimentary
Quartz Vein (Iron-stained)
Silicon Dioxide (SiO2) with limonite/hematite staining
mineral
Quartz Vein Rock with Feldspar
Silicon Dioxide (SiO2) with Potassium Feldspar
mineral
Orange calcite (honey calcite)
Calcite, calcium carbonate (CaCO₃)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Fossilized Shark Tooth
Chondrichthyes (Class) fossilized tooth
fossil
Dalmatian Jasper
Peralkaline Feldspar Diorite/Rhyolite
igneous