Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Category
Mineral (Impactite)
Browse mineral (impactite) specimens identified by the Rock Identifier community.
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Gneiss (with iron staining)
Gneiss
metamorphic
Gneiss (Metamorphic Rock)
Gneiss
metamorphic
Granite (Dioritic variant)
Phaneritic Felsic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Gneiss (specifically a Granitic Gneiss)
Gneiss (Composition: Quartz, Feldspar, Mica)
metamorphic
Banded Gneiss
Gneiss
metamorphic
Diorite (River Rock/Cobble)
Intermediate Plutonic Igneous Rock (Diorite)
igneous
Gneiss
Gneiss (High-grade regional metamorphic rock)
Metamorphic
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Diorite
Phaneritic intermediate plutonic rock
igneous
Pegmatite
Igneous Pegmatite
igneous
Mineral and Rock Collection (Assorted)
Mixed collection including Quartz (SiO2), Jasper (SiO2 with impurities), Rose Quartz, and Aventurine
mineral
Greisen
Greisen
Metamorphic
Greisen (Quartz-Muscovite-Turretine Rock)
Greisen
Metamorphic Rock
Vanadinite
Pb5(VO4)3Cl
mineral
Limonite
FeO(OH)•nH2O
mineral
Turquoise
CuAl6(PO4)4(OH)8"""""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" • 4H2O (Hydrated copper and aluminum phosphate)
mineral
Turquoise
Hydrated phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O
mineral
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Hematite (Botryoidal / Kidney Ore)
Iron Oxide (Fe2O3)
mineral
Limonite with Ironstone
Limonite (hydrated iron(III) oxide-hydroxides), FeO(OH)·nH2O
mineral
Turquoise (with Hematite)
CuAl6(PO4)4(OH)8·4H2O
mineral
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide)
mineral
Limonite (Ironstone)
Hydrous ferric oxides (FeO(OH)·nH2O)
mineral
Granite
Phaneritic plutonic rock (Quartz, Alkali Feldspar, and Plagioclase)
igneous
Banded Sedimentary Rock (Wishbone Stone / Banded Quartzite or Limestone)
Silicified limestone or banded sedimentary rock with mineral veins
sedimentary
Magnetite (Lodestone)
Magnetite (Fe3O4)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Sandstone Pebble
Arenite (Sandstone)
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Likely serpentine (serpentinite) pebble
Serpentine-group minerals, chiefly antigorite, lizardite, or chrysotile; commonly with magnetite and minor carbonate
metamorphic
Lapis Lazuli
Na8(Al6Si6O24)S2 (Lazurite is the primary constituent mineral)
metamorphic
Native Copper
Native Copper (Cu)
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Blue Apatite
Apatite, Ca5(PO4)3(F,Cl,OH)
mineral
Weathered granite or granitic gneiss fragment
Quartz–feldspar–mica granite; possibly foliated granitic gneiss
igneous