Milky Quartz with Chlorite/Epidote
Silicon Dioxide (SiO2) with phyllosilicate or sorosilicate inclusions
mineral
Category
Mineral (Processed Metal)
Browse mineral (processed metal) specimens identified by the Rock Identifier community.
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Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate - (Mn,Fe,Mg,Ca)SiO3)
mineral
Fossil Shark Tooth
Odontaspididae (likely Carcharias sp.)
fossil
Rhyolite (Leopard Skin Jasper)
Rhyolite (Silicon Dioxide with impurities)
igneous
Tiger's Eye
Pseudomorph of Quartz after Crocidolite
metamorphic
Leopard Skin Jasper
Rhyolite (Silicon Dioxide - SiO2 with impurities)
sedimentary
Mica Schist
Mica Schist (primarily Muscovite or Biotite Schist)
metamorphic
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone (likely Arkosic)
Clastic Sedimentary Rock
sedimentary
Tiger's Eye
SiO2 (Silicon Dioxide with iron inclusions)
Mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Granite (Light-colored quartz/feldspar variety)
Granite (composed primarily of Quartz SiO2 and Feldspar KAlSi3O8)
igneous
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)
metamorphic
Mixed Polished Gemstones (Tumbled Stones)
Mixed Silicates and Oxides (SiO2, KAlSi3O8, Ca2Al2Be3Si6O22, etc.)
mineral
Specular Hematite with Quartz
Ferric oxide (Fe2O3) and Silicon dioxide (SiO2)
Mineral
Black Onyx and Verdigris Copper Jewelry
Chalcedony (SiO2) with Copper Patina
mineral
Schorl (Black Tourmaline)
Sodium Iron Aluminum Borosilicate Hydroxide - NaFe2+3Al6Si6O18(BO3)3(OH)3OH
mineral
Schist
Mica Schist
metamorphic
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Sandstone (likely Arkosic or Quartzose)
Arenite (SiO2 based with mineral inclusions)
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)
sedimentary
Red Jasper
Silicon Dioxide (SiO2)
sedimentary
Carnelian Agate
Chalcedony (SiO2) with iron oxide inclusions
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Agate (specifically a Yellow/Honey Agate)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Worn River Pebble with Fossil Indentation
Sedimentary Rock with Fossil Infill
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Green Chert (Jasper / Flint)
Silicon Dioxide (SiO2)
sedimentary
Blue Quartzite
Quartzite (silicon dioxide, SiO2)
metamorphic
Petrified Wood
Silicified Wood (SiO2 as Quartz/Chert/Chalcedony)
sedimentary
Magnetite / Iron-Rich Basalt
Magnetite bearing Mafic Rock (Fe3O4)
igneous
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxides)
metamorphic
Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Kunzite
Spodumene (LiAlSi2O6)
mineral
Gold-bearing Quartz
Native Gold (Au) in Quartz (SiO2) matrix
mineral
Ironstone / Hematite
Iron(III) oxide (Fe2O3)
mineral
Red Sandstone
Arenite (with Iron Oxide)
sedimentary
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of Iron Oxide)
metamorphic
Pyrite on Quartz
Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)
mineral