Schist
Mica Schist
Category
Browse mineral like byproduct (technogenic) specimens identified by the Rock Identifier community.
Schist
Mica Schist
Granite
Phaneritic plutonic rock (Quartz, Alkali Feldspar, and Plagioclase)
Gneiss with Quartz Veining
Gneiss (High-grade metamorphic rock)
Fossil Coral / Crinoid Stem section
Anthozoa / Crinoidea fossil
Limonite Concretion
Goethite/Limonite concretion (FeO(OH)·nH2O)
Quartz Pebble with Chlorite or Epidote Inclusions
Silicon Dioxide (SiO2) with inclusions
Yellow Jasper
Cryptocrystalline Quartz (SiO2) with Goethite/Limonite inclusions
Fossilized Shark Tooth
Elasmobranchii fossil (likely Odontaspididae family)
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
Garnet Schist
Almandine-Garnet Schist
Greenstone with Quartz Veining
Epidiorite or Metabasalt with SiO2 (Quartz) veins
Pink Feldspar / Rhodochrosite (Tumbled Pink Quartzite)
SiO2 (Quartz) / KAlSi3O8 (Potassium Feldspar)
Sandstone (Quartz Sandstone / Iron-stained Sandstone)
Sandstone (SiO2 with iron oxide impurities)
Greenschist (Greenstone River Pebble)
Greenschist (Chlorite Schist)
Vesicular Basalt
Aphanitic Mafic Volcanic Rock
Muscovite Mica
KAl2(AlSi3O10)(OH)2
Greenstone / Greenschist
Metamorphosed mafic igneous rock (Greenschist facies)
Green Sandstone
Glauconitic Sandstone
Granite
Granite
Vanadinite
Pb5(VO4)3Cl
Copper Ore Specimen
Cupriferous Rock / Malachite-bearing ore
Granite
Granite (Felsic Plutonic Rock)
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Schist
Mica Schist
Plume Agate or Moss Agate
Silicon dioxide (SiO2)
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
Quartz Geode
Crystalline Silicon Dioxide (SiO2) in sedimentary/volcanic host
Turtle Stone / Septarian Nodule (Fragment)
Septarian Concretion (Calcite, Aragonite, and Limestone)
Schist (Garnet-Mica Schist)
Garnet-Mica Schist
Sandstone
Arenite
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Graphic Granite / Pegmatite
Graphic Granite (Alkali Feldspar and Quartz)
Native Copper
Copper (Cu)
Quartz with impurities or Host Rock
SiO2 (Silicon Dioxide) with mixed silicates
Limonite (Yellow Ochre)
Limonite (Hydrated iron(III) oxide-hydroxide, FeO(OH)·nH2O)
Vesicular Basalt with Pyrite
Basalt (MgFe2+)(Si,Al)2O6 containing FeS2 inclusions
Granitic Pegmatite
Granite Pegmatite (coarse-grained intrusive igneous rock)
Pegmatitic Granite
Granite with Orthoclase Feldspar and Quartz (SiO2, KAlSi3O8)
Schist
Mica Schist
Conglomerate
Clastic Sedimentary Rock
Greenschist
Greenschist (Chlorite-actinolite schist)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)