Granitic Pegmatite with Biotite
Pegmatitic Granite (contains KAlSi3O8, SiO2, K(Mg,Fe)3AlSi3O10(OH)2)
Category
Browse mineral (extraterrestrial) specimens identified by the Rock Identifier community.
Granitic Pegmatite with Biotite
Pegmatitic Granite (contains KAlSi3O8, SiO2, K(Mg,Fe)3AlSi3O10(OH)2)
Diorite
Diorite (Intermediate intrusive igneous rock)
Diorite (River Rock/Cobble)
Intermediate Plutonic Igneous Rock (Diorite)
Gneiss
Gneiss (High-grade regional metamorphic rock)
Diorite
Phaneritic intermediate plutonic rock
Raw Corundum (Sapphire/Ruby variant)
Aluminum oxide (Al2O3)
Blue Apatite
Apatite-(CaF), Ca5(PO4)3F (Calcium Fluorophosphate)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Milky Quartz with Tourmaline and Iron Oxides
Silicon Dioxide (SiO2) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Orthoclase Feldspar
Potassium Aluminum Silicate (KAlSi3O8)
Azurite and Malachite on Matrix
Cu3(CO3)2(OH)2 (Azurite) and Cu2CO3(OH)2 (Malachite)
Gneiss (with Quartz-Feldspar vein)
Gneiss (high-grade metamorphic rock) containing Quartz (SiO2) and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8)
Blue Howlite (Dyed)
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
Limonite/Goethite (Iron Ore)
Hydrous ferric oxides (FeO(OH)·nH2O)
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide mixture)
Iron Ore (Limonite and Hematite)
Goethite/Limonite (FeO(OH)·nH2O) and Hematite (Fe2O3)
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
Turquoise and Hematite
Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Hematite (Fe2O3)
Prehnite
Prehnite (Ca2Al2Si3O10(OH)2)
Kunzite
Spodumene (LiAlSi2O6)
Epidote with Magnetite/Hematite inclusions
Epidote (Ca2(Al2,Fe3+)(SiO4)3(OH)) with Iron Oxides
Quartz Pebbles
Silicon Dioxide (SiO2)
Malachite
Copper(II) carbonate hydroxide [Cu2CO3(OH)2]
Diorite (possibly fine-grained variety or a related intermediate intrusive rock like a felsic gabbro or a dark granodiorite)
Diorite (Igneous rock, intrusive, intermediate composition)
Sandstone
Arenite (Siliclastic sedimentary rock), SiO2 + various minerals
Concretion
Septarian Concretion
Fluorite
Calcium Fluoride (CaF2)
Fluorite
Calcium Fluoride (CaF2)
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Granite Gneiss
Granitic Gneiss
Lapis Lazuli
Na8(Al6Si6O24)S2 (Lazurite is the primary constituent mineral)
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
Gneiss (with iron staining)
Gneiss
Gabbro
Gabbro (Mafic Plutonic Rock)
Gneiss (Metamorphic Rock)
Gneiss
Granite (Dioritic variant)
Phaneritic Felsic Igneous Rock (primarily Quartz, Feldspar, and Mica)
Gneiss
Gneiss (High-grade regional metamorphic rock)
Gneiss (specifically a Granitic Gneiss)
Gneiss (Composition: Quartz, Feldspar, Mica)
Vanadinite
Vanadinite (Pb5(VO4)3Cl)
Chiastolite (Andalusite)
Al2SiO5
Quartz vein in Schist
Crystalline Silicon Dioxide (SiO2) in Metamorphic Host
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)