Magnetite (Lodestone)
Magnetite (Fe3O4)
Category
Browse mineral composite specimens identified by the Rock Identifier community.
Magnetite (Lodestone)
Magnetite (Fe3O4)
Pyrite
Iron Sulfide (FeS2)
Sandstone Pebble
Arenite (Sandstone)
Sandstone
Arenite (SiO2 primarily)
Quartz Geode
Silicon Dioxide (SiO2)
Quartz Geode
Silicon Dioxide (SiO2)
Fluorite
Calcium Fluoride (CaF2)
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
Fossilized Shark Tooth
Chondrichthyes (Class) fossil
Native Copper
Native Copper (Cu)
Blue Apatite
Apatite, Ca5(PO4)3(F,Cl,OH)
Amygdaloidal Basalt
Amygdaloidal Mafic Volcanic Rock
Vanadinite
Pb5(VO4)3Cl
Turquoise
CuAl6(PO4)4(OH)8"""""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" • 4H2O (Hydrated copper and aluminum phosphate)
Turquoise
Hydrated phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O
Limonite
FeO(OH)•nH2O
Hematite (Botryoidal / Kidney Ore)
Iron Oxide (Fe2O3)
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
Limonite with Ironstone
Limonite (hydrated iron(III) oxide-hydroxides), FeO(OH)·nH2O
Turquoise (with Hematite)
CuAl6(PO4)4(OH)8·4H2O
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide)
Limonite (Ironstone)
Hydrous ferric oxides (FeO(OH)·nH2O)
Granite
Intrusive Igneous Rock (Felsic)
Gneiss (with Quartz-Feldspar vein)
Gneiss (high-grade metamorphic rock) containing Quartz (SiO2) and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8)
Sandstone (Ferruginous)
Arenite (Fe2O3 staining)
Sandstone
Arenite (Sedimentary Rock)
Sandstone
Sedimentary Rock (Quartz arenite)
Polished serpentine
Serpentine-group minerals, chiefly lizardite and/or antigorite; approximate formula Mg₃Si₂O₅(OH)₄
Goldstone (Brown)
Aventurine glass
Sandstone
Sandstone (Quartzose/Feldspathic Sandstone)
Marble
Metamorphic Limestone (CaCO3)
Marble
Recrystallized Calcite (CaCO3)
Marble
Metamorphosed Limestone (principally CaCO3)
Sandstone (with potential iron-oxide staining)
Arenite (primarily SiO2)
Shattuckite (Blue Quartz/Jasper Matrix)
Shattuckite (Copper Silicate Hydroxide - Cu5(SiO3)4(OH)2)
Schist
Mica Schist (Metamorphic rock)
Chrysocolla
Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O
Ironstone Concretion (Limonite/Goethite)
Ferruginous Sandstone or Limonite (FeO(OH)·nH2O)
Malachite Coating on Host Rock
Malachite [Cu2CO3(OH)2]
Pyromorphite
Pyromorphite (Pb5(PO4)3Cl)
Fluorite (Fluorescent)
Calcium Fluoride (CaF2)