Weathered vesicular volcanic rock (likely vesicular basalt or scoria)
Vesicular basalt; primarily plagioclase, pyroxene, and iron-rich oxides, with possible glass
igneous
Category
Sedimentary Or Igneous Associated Mineral
Browse sedimentary or igneous associated mineral specimens identified by the Rock Identifier community.
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Gneiss (with Garnet)
Gneiss (Feldspar-Quartz-Biotite-Garnet Metamorphic Rock)
metamorphic
Chalcopyrite
Copper iron sulfide (CuFeS2)
mineral
Mica Schist
Schist (Muscovite/Biotite Schist)
metamorphic
Quartz with Epidote
Silicon dioxide (SiO2) with Calcium aluminum iron silicate (Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH))
mineral
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Fluorite (Rainbow Fluorite)
Calcium Fluoride (CaF2)
mineral
Polished garnet-bearing gneiss
Biotite-quartz-feldspar gneiss with almandine garnet (garnet: Fe₃Al₂(SiO₄)₃)
metamorphic
Amazonite
Microcline Feldspar (KAlSi3O8)
mineral
Garnet in Host Rock
Garnet Group (A3B2(SiO4)3)
metamorphic
Small rounded pebble, likely quartz-rich sandstone or granitic fragment
Indeterminate lithic clast; possible quartz–feldspar aggregate
igneous
Small quartz crystal fragment (probable)
Quartz, silicon dioxide (SiO₂)
mineral
Jasper
SiO2
Mineral
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Gneiss
Gneiss
metamorphic
Greenschist
Chlorite schist
metamorphic
Black Sand (Magnetite/Heavy Mineral Concentrate)
Magnetite-rich Placers (Fe3O4)
sedimentary
Lapis Lazuli
Complex silicate rock containing lazurite, pyrite, and calcite
gemstone
Fluorite
Calcium Fluoride (CaF2)
mineral
Quartz Geode
Crystalline Silicon Dioxide (SiO2) in Geode form
mineral
Galena with Pyrite
Lead Sulfide (PbS) associated with Iron Sulfide (FeS2)
mineral
Metallic sulfide mineral specimen, likely pyrite-bearing ore
Likely pyrite (FeS₂), possibly mixed with other sulfides or host rock
mineral
Gneiss
Banded Metamorphic Rock (Gneiss)
metamorphic
Polished garnet-bearing metamorphic rock
Likely garnet mica schist or garnet-bearing gneiss; garnet is commonly almandine, Fe₃Al₂(SiO₄)₃
metamorphic
Garnet-bearing schist or gneiss
Garnet-mica schist/gneiss; chiefly quartz, feldspar, mica, and almandine–pyrope garnet
metamorphic
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Weathered quartz-rich metamorphic rock, likely gneiss or quartzite
Quartz (SiO₂)-bearing gneiss; exact identification requires a fresh surface and tests
metamorphic
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Sodalite
Sodalite: Na8(Al6Si6O24)Cl2
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Granite
Intrusive Igneous Rock
igneous
Eudialyte
Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Rhodochrosite
Rhodochrosite, Manganese Carbonate (MnCO3)
mineral
Greenschist
Greenschist (composed mainly of chlorite, epidote, actinolite, and albite)
metamorphic
Banded metamorphic rock, likely schist or gneiss
Foliated quartz–feldspar–mica rock; exact mineral identification requires sampling
metamorphic
Fluorite
Calcium Fluoride (CaF2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Quartz Cluster (Likely Ferruginous)
Silicon Dioxide (SiO2)
mineral
Chalcopyrite (Peacock Ore)
Chalcopyrite (CuFeS2)
mineral