Pink Granite
Phaneritic intrusive igneous rock (K-feldspar rich)
igneous
Category
Mineral Like Biological Tissue
Browse mineral like biological tissue specimens identified by the Rock Identifier community.
Snowflake Obsidian
Vitreous Volcanic Glass (Siliceous Obsidian with Cristobalite inclusions)
igneous
Blue Quartzite
Quartzite (primarily SiO2 with inclusions)
metamorphic
Schist
Mica Schist
metamorphic
Blue Cracked Quartz (Dyed Fire Crackle Quartz)
Silicon Dioxide (SiO2) with synthetic dye
mineral
Granite
Granite
igneous
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Conglomerate
Conglomerate (Clastic sedimentary rock)
sedimentary
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Silicon Dioxide (Quartz) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Liesegang Banded Sandstone (Wonderstone)
Ferruginous Sandstone with Liesegang Rings
sedimentary
Quartz with mica and feldspar (Pegmatite fragment)
Granitic Pegmatite (composed mainly of SiO2 with KAlSi3O8)
igneous
Granitic Pegmatite (Muscovite and Quartz)
Pegmatite (KAl2(AlSi3O10)(OH)2 / SiO2)
igneous
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Kunzite (variety of Spodumene)
Lithium Aluminum Silicate (LiAlSi2O6)
mineral
Rose Quartz
Silicon dioxide (SiO2)
mineral
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Granite
Phaneritic Felsic Igneous Rock
igneous
Granitic Pegmatite with Schorl
Granitic Pegmatite (Schorl: NaFe3Al6(Si6O18)(BO3)3(OH)3OH)
igneous
Greenschist
Chlorite schist
metamorphic
Dyed Quartz Geode
Silicon Dioxide (SiO2) with artificial pigment
mineral
Amygdaloidal Basalt
Basalt with Secondary Mineral Infillings
igneous
Green Jasper (Banded Jasper)
Silicon Dioxide (SiO2) with impurities
sedimentary
Muscovite Mica
Muscovite (Potassium Aluminum Silicate) - KAl2(AlSi3O10)(F,OH)2
mineral
Granodiorite
Granodiorite (Intermediate intrusive igneous rock)
igneous
Cullet (Slag Glass)
Amorphous Silica (SiO2) with various metal oxide colorants
mineraloid / anthropogenic
Bauxite
Bauxite (Al(OH)3, γ-AlO(OH), and α-AlO(OH))
sedimentary
Gold-bearing Quartz with Iron Oxides
Quartz (SiO2) with Limonite/Goethite (FeO(OH)) and Pyrite (FeS2)
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Blue Aventurine
Quartzite with inclusions of Dumortierite (SiO2 + Al7(BO3)(SiO4)3O3)
metamorphic
Malachite and Azurite on Gossan (Ironstone Matrix)
Cu2CO3(OH)2 (Malachite) on FeO(OH)·nH2O (Limonite/Gossan)
mineral
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Lepidolite in Quartz (Lithium-bearing Ore)
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) and Quartz (SiO2)
igneous/mineral
Amygdaloidal Basalt
Amygdaloidal Basalt with Secondary Infilling (e.g., Agate, Quartz, or Zeolite)
igneous
Orange Quartz with Epidote
Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate hydroxide (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))
mineral
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Dalmatian Stone (often misnamed Dalmatian Jasper)
Aplite (with hornblende/arfvedsonite inclusions)
igneous
Dendritic Rhodonite
Rhodonite (Manganese Silicate), (Mn,Fe,Mg,Ca)SiO3
mineral
Pegmatite with Schorl (Black Tourmaline) and Mica
Pegmatite (complex association of NaAlSi3O8, NaFe3Al6(BO3)3Si6O18(OH)4, and KAl2(AlSi3O10)(OH,F)2)
igneous
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions (Hematite/Goethite)
mineral
Gneiss (specifically Banded Gneiss)
Gneiss
metamorphic
Quartz with Limonite Staining
Silicon Dioxide (SiO2) with Hydrated Iron Oxide (FeO(OH)·nH2O)
Mineral