Pegmatite
Igneous Pegmatite (Quartz, Feldspar, Micas)
igneous
Category
Sedimentary And Igneous (Mixed)
Browse sedimentary and igneous (mixed) specimens identified by the Rock Identifier community.
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Pegmatite
Granitic Pegmatite
igneous
Rainbow Hematite (Man-made/Treated)
Tumbled Hematite with Titanium/Anodized coating (Iron(III) oxide, Fe2O3)
mineral
Fancy Jasper
Silicon Dioxide (SiO2) with iron and organic inclusions
sedimentary
Red Jasper
Silicon Dioxide (SiO2) - variety of Chalcedony
sedimentary
Weathered quartz-rich rock, possibly granite or granitic pegmatite
Indeterminate quartz–feldspar aggregate; likely granite/pegmatite
igneous
Red Granite
Granite (Felsic intrusive igneous rock)
igneous
Pink granite
Coarse-grained granitic rock, chiefly orthoclase microcline feldspar, quartz, and dark biotite/amphibole
igneous
Pink Granite
Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)
igneous
Gabbro (Water-worn pebble)
Gabbro
igneous
Pegmatite with Lepidolite and Feldspar
Pegmatite (containing K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 and KAlSi3O8)
igneous
Banded Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Jasper with Quartz
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Conglomerate
Sedimentary Conglomerate
sedimentary
Diorite (River Rock/Cobble)
Intermediate Plutonic Igneous Rock (Diorite)
igneous
Pink Granite
Granite (Phaneritic Acidic Igneous Rock)
igneous
Pink and Green Tourmaline (Tumbled)
Elbaite (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4)
mineral
Sodalite
Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)
mineral
Copper Ore
Cupriferous Rock / Mixed Mineral Matrix
igneous
Asphalt Conglomerate
Artificial Bituminous Conglomerate
sedimentary
Conglomeratic breccia
Clast-supported polymictic conglomerate/breccia, cemented by silica- or carbonate-rich matrix
sedimentary
Mixed river gravel (alluvial conglomeratic sediment)
Polymictic alluvium; composition includes quartz, feldspar, chert, granite, basalt, and metamorphic rock fragments
sedimentary
Bauxite
Aluminium ore (Hydrated aluminium oxides AlOx(OH)3-2x)
sedimentary
Sandstone with Desert Varnish
Arenite with Ferromanganese patina
sedimentary
Agate (Lake Superior Agate variant)
Chalcedony / Silicon Dioxide (SiO2)
sedimentary
Lunar Meteorite
Lunar Feldspathic Breccia
igneous
Pink Granite
Phaneritic Quartz-Feldspar Plutonic Rock
igneous
Yellow Jasper
Silicon Dioxide (SiO2) with hydrated iron oxide impurities (Goethite)
Mineral-based Sedimentary/Silica
Banded Chert / Jasper
Silicon Dioxide (SiO2)
sedimentary
Granite Pegmatite
Pegmatite (Quartz, Feldspar, Mica)
igneous
Quartz with impurities or Host Rock
SiO2 (Silicon Dioxide) with mixed silicates
mineral
Black granite (likely polished gabbro or diabase)
Granitoid rock dominated by feldspar, quartz, and dark mafic minerals; exact identification requires testing
igneous
Sodalite and Calcite
Na8(Al6Si6O24)Cl2 (Sodalite) and CaCO3 (Calcite)
mineral
African Turquoise
African Turquoise (a trade name for Jasper, a variety of Chalcedony: SiO2)
sedimentary
Mixed Crushed Stone
Aggregate (varied mineral composition)
igneous and sedimentary mixture
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Granodiorite
Granodiorite (intermediate intrusive igneous rock containing plagioclase, quartz, and K-feldspar)
igneous
Pink Granite
Phaneritic Felsic Intrusive Igneous Rock
igneous
Barite
Barium Sulfate (BaSO4)
mineral
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Conglomerate
Conglomerate (Sedimentary rock containing rounded clasts)
sedimentary
Granite
Granite (Phaneritic intrusive igneous rock)
igneous