Granite
Intrusive Igneous Rock
igneous
Category
Mineral Variant
Browse mineral variant specimens identified by the Rock Identifier community.
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Granite
Intrusive Igneous Rock
igneous
Conglomerate / Breccia Matrix (Aggregated Rock)
Sedimentary Breccia / Conglomerate
sedimentary
Gneiss (Banded Gneiss Cobble)
Gneiss
metamorphic
Limonite/Goethite (Iron Ore)
Hydrous ferric oxides (FeO(OH)·nH2O)
mineral
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide mixture)
mineral
Iron Ore (Limonite and Hematite)
Goethite/Limonite (FeO(OH)·nH2O) and Hematite (Fe2O3)
mineral
Apatite
Fluorapatite / Chlorapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Petrified Wood / Fossilized Wood
Silicified Wood (Silicon Dioxide - SiO2)
fossil
Limonite (Iron Ore)
FeO(OH)·nH2O
mineral
Black Sand (Magnetite Sand)
Magnetite (Fe3O4)
mineral
Chrysocolla
Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Silver Nuggets (Natural or Cast)
Native Silver (Ag)
mineral
Quartz Geode
Silicon Dioxide (SiO2) in Geodic Cavity
sedimentary
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Black Spinel
Magnesium Aluminum Oxide (MgAl2O4)
mineral
Cobaltian Calcite
Cobalt-bearing Calcite (Ca,Co)CO3
mineral
Granite
Intrusive igneous rock
igneous
Diorite (Porphyritic) / Granite
Plutonic Igneous Rock (Granodiorite / Diorite)
igneous
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Milky Quartz with Mineral Inclusions
Quartz (Silicon Dioxide, SiO2)
mineral
Mixed Mineral and Fossil Collection
Multi-specimen assemblage (SiO2, CaCO3, FeS2, etc.)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Green glassy slag or manufactured glass bead
Noncrystalline silicate glass; likely industrial glass/slag, not a true mineral
mineral
Quartz-rich Diorite
Diorite (Phaneritic intermediate igneous rock)
igneous
Gneiss
Gneiss
metamorphic
Granodiorite
Granodiorite
igneous
Granite fragment
Granite (Felsic intrusive igneous rock)
igneous
Gneiss (High-grade Metamorphic Rock)
Gneiss
metamorphic
Granite
Granite (compositionally: Quartz, Alkali Feldspar, and Plagioclase)
igneous
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Banded Gneiss
Gneiss (Metamorphic rock composed of feldspar, quartz, and mica)
metamorphic
Native Copper in Basalt
Cuprum (with Host Basalt)
igneous
Gneiss
High-grade Metamorphic Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Turquoise and Hematite
Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Hematite (Fe2O3)
mineral
Carved serpentine wing sculpture
Serpentine-group rock, chiefly antigorite/lizardite: Mg3Si2O5(OH)4
metamorphic
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Granite Pebble
Granite
igneous
Red Granite Pebble
Intrusive Felsic Igneous Rock (Granite)
igneous