Epidote in Matrix (likely Amphibolite or Gneiss)
Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)) in Metamorphic Matrix
metamorphic
Category
Mineral
Browse mineral specimens identified by the Rock Identifier community.
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Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Ametrine
Silicon Dioxide (SiO2) with impurities of iron
mineral
Quartz-Veined Mudstone
Argillaceous Mudstone with Quartz Veining
sedimentary
Copper Ore
Native Copper (Cu) often found with Chalcocite (Cu2S) or Bornite (Cu5FeS4)
mineral
Pink Granite
Phaneritic Felsic Intrusive Igneous Rock
igneous
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic volcanic rock)
igneous
Sandstone
Arenite
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Rough Ruby
Corundum (Al2O3 with Chromium impurities)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Agate
Agate (Chalcedony), SiO2
Mineral
Blue Zircon
Zircon (Zirconium Silicate), ZrSiO4
gemstone
Quartz (Citrine or Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Copper and Quartz beads
Native Copper (Cu) and Crystalline Quartz (SiO2)
mineral
Lapis Lazuli (Low Grade)
Lazurite-rich metamorphic rock ((Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2)
metamorphic
Quartz (Small Grains)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
mineral
Quartz on Host Rock
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Pink Granite (with Potassic Feldspar and Quartz)
Felsic Intrusive Igneous Rock (Granite)
igneous
Seashell (Calcium Carbonate)
Calcium Carbonate (CaCO3)
mineral
Manganese-coated Sandstone
Clastic sedimentary rock with Manganese Oxide (often Pyrolusite or Psilomelane)
sedimentary
Red Ochre (Hematite-rich Clay)
Limonitic/Hematitic Claystone (Fe2O3 with clay minerals)
Sedimentary
Jasper or Agate with Chlorite Inclusions
Silicon Dioxide (SiO2) with Chlorite group minerals
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Man-made Slag (Industrial Byproduct)
Anthropogenic Glassy Residue
not a natural rock
Orange Calcite
Calcite (CaCO3)
Mineral
Greywacke (River Slikenside)
Greywacke (Lithic Sandstone)
sedimentary
Amazonite
Microcline (KAlSi3O8) with Pb impurities
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Fluorite
Fluoride (Calcium Fluoride - CaF2)
mineral
Leopard Skin Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Prehnite
Prehnite (Ca2Al2Si3O10(OH)2)
mineral
Quartz (Druzy) in host rock
SiO₂ (Silicon Dioxide) as Quartz, with unspecified host rock components (likely silicates and iron oxides)
Mineral
Dendrite (Manganese Oxide Dendrites)
Psilomelane or Pyrolusite on Matrix (typically MnO2)
mineral
Limonite after Pyrite (Prophecy Stone or Ironstone Concretion)
Goethite/Limonite pseudomorph after Pyrite/Marcasite (FeO(OH)·nH2O)
mineral
Pyrite in Shaly Matrix
Iron Sulfide (FeS2)
mineral
Fossilized Bone Chunk (likely Dinosaur or Large Mammal)
Permineralized Fossil Bone
sedimentary
Schist (with Iron Oxide)
Mica Schist
metamorphic
Green Calcite (Onyx Marble)
Carbonate mineral (Calcium Carbonate, CaCO3)
sedimentary