Fluorite (Purple Fluorite in Matrix)
Fluorite (Calcium Fluoride, CaF2)
mineral
Category
Mineral (Processed Metal)
Browse mineral (processed metal) specimens identified by the Rock Identifier community.
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Epidote with Quartz
Ca2(Al,Fe)3(SiO4)3(OH) (Epidote) / SiO2 (Quartz)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Granite
Felsic intrusive igneous rock
igneous
Snowflake Obsidian
Volcanic Glass (SiO2 with Cristobalite inclusions)
igneous
Greenschist
Greenschist (Major minerals include Chlorite, Actinolite, and Epidote)
metamorphic
Red Sandstone
Arenite (primarily Quartz with Iron Oxide coating)
sedimentary
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2) with Hematite/Limonite
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble with Chert
Silicon Dioxide (SiO2)
mineral
Gneiss (Cobble)
Gneiss
metamorphic
Dyed Agate
SiO2
mineral
Quartz (Milky/Smoky Quartz)
Silicon Dioxide (SiO2)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
gemstone
Aquamarine
Beryl (Be3Al2Si6O18)
gemstone
Sunstone
Feldspar (variety Oligoclase or Labradorite), (Ca,Na)(Al,Si)4O8
mineral
Fluorite
Calcium fluoride (CaF2)
mineral
River Quartz Pitting/Cobble
Silicon Dioxide (SiO2)
mineral
Garnet-bearing Quartzite
Metamorphic rock containing Almandine Garnet (Fe3Al2(SiO4)3) and Quartz (SiO2)
metamorphic
Mosasaur Tooth
Mosasaurus sp.
fossil
Dragon Blood Jasper
Epidote with Red Jasper (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH))
sedimentary
Sandstone
Sandstone (principally SiO2/Silicon Dioxide)
sedimentary
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)
metamorphic
Hag Stone
Perforated Sedimentary Rock
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Sandstone (Ferruginous)
Sandstone (primarily SiO2 with Fe2O3 cement)
sedimentary
Orbicular Granite
Orbicular Granidiorite / Plutonic Igneous Rock
igneous
Jasper
Silicon dioxide (SiO2)
sedimentary
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)
metamorphic
Brecciated Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
sedimentary
Mahogany Obsidian
Volcanic Glass with Hematite/Magnetite (SiO2 + Fe2O3)
igneous
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)
metamorphic
Banded Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Dalmatian Stone
Dalmatian Stone (Felsic Igneous Rock)
igneous
Red Sandstone
Arenite (primarily SiO2 with hematite/iron oxide coating)
sedimentary
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Black Tourmaline (Schorl)
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
mineral