Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Category
Mixed (Igneous, Sedimentary, Metamorphic, And Minerals)
Browse mixed (igneous, sedimentary, metamorphic, and minerals) specimens identified by the Rock Identifier community.
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
mineral
Blue Sapphire
Corundum (Al2O3)
mineral
White Sapphire
Corundum (Al2O3)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Blue Sapphire
Corundum (Al2O3 with trace Titanium/Iron)
mineral
Banded Agate (specifically Lace Agate type)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
mineral
Moonstone
Orthoclase (KAlSi3O8) with inclusions of Albite (NaAlSi3O8)
mineral
Quartz (Milky or Cloudy variety)
Silicon Dioxide (SiO2)
mineral
Dalmatian Stone (commonly Dyed)
Dalmatian Jasper (Peralkaline igneous rock)
igneous
Citrine
Silicon Dioxide (SiO2) with iron impurities
Mineral
Fluorite with Quartz coating
Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)
mineral
River Pebbles (Stream-rounded rocks)
Fluvial Detritus (varied mineralogy)
Mixed (predominantly sedimentary and igneous)
Beryl (likely Emerald or Aquamarine in matrix)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Schist
Crystalline Metamorphic Rock (Schistose)
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
Schist
Mica Schist
metamorphic
Hematite Nodule
Hematite (Fe2O3)
mineral
Slate
Slate (a fine-grained, foliated metamorphic rock). Mineral composition: Primarily composed of mica minerals (muscovite, chlorite, sericite) and quartz, with minor amounts of hematite, pyrite, and other accessory minerals.
sedimentary
Basalt with Quartz/Zeolite Inclusions
Porphyritic Basalt (SiO2 with Aluminosilicates)
igneous
Indigo Gabbro
Gabbro (MaFIC intrusive rock)
igneous
Pyrite
Iron Sulfide (FeS2)
mineral
Black Star Diopside
Diopside (CaMgSi2O6) with Magnetite inclusions
mineral
Jasper in Basalt Matrix
Silicon Dioxide (SiO2) with impurities; Chalcedony
sedimentary (secondary mineral) within igneous
Marble
Recrystallized Calcite / Dolomite (CaCO3)
metamorphic
Bronzite
MgSiO3 (Enstatite with 10-30% FeSiO3 in solid solution)
Mineral
Jadeite
NaAlSi2O6 (Sodium Aluminum Silicate)
metamorphic
Nuummite
Nuummite (mixture of Anthophyllite and Gedrite)
metamorphic
Schist
Mica Schist (Medium-grade metamorphic rock)
metamorphic
Mica Schist
Foliated Metamorphic Rock (rich in Muscovite or Biotite)
metamorphic
Limonite / Ironstone Nodule
Limonite (Hydrated iron(III) oxide-hydroxide), FeO(OH)·nH2O
mineral
Pyrite (Fool's Gold) Cube
Iron Sulfide (FeS2)
mineral
Dalmatian Stone
Dalmatian Jasper (Aphanitic Igneous Rock with Arfvedsonite inclusions)
igneous
Yellow Aventurine
Quartz (Silicon Dioxide) with Mica inclusions (SiO2)
mineral
Granite
Granite (a common term for a felsic intrusive igneous rock)
igneous
Common Marble
Calcium Carbonate (CaCO3)
metamorphic
Aventurine
Quartz containing inclusions of Fuchsite (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
metamorphic