Yellow Aventurine
Silicon Dioxide (Quartz with inclusions of Mica or Pyrite), SiO2
metamorphic
Category
Metamorphic Rock (Primarily Composed Of Minerals)
Browse metamorphic rock (primarily composed of minerals) specimens identified by the Rock Identifier community.
Learn about Metamorphic Rock (Primarily Composed Of Minerals) in the encyclopedia
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Sandstone
Arenite (primarily SiO2)
sedimentary
Schist
N/A (a rock type, not a mineral formula)
metamorphic
Diorite
Diorite (an intrusive igneous rock)
igneous
Red Jasper (Brecciated Jasper)
SiO2 (Silicon Dioxide) with Ferric Iron inclusions
sedimentary
Fuchsite
K(Al,Cr)2(AlSi3O10)(OH)2
Mineral
Smoky Quartz (Tumbled)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Jadeite (Jade)
Jadeite, NaAlSi2O6
metamorphic
Ironstone (with possible Hematite/Limonite coating)
Ironstone (Fe-rich sedimentary rock)
sedimentary
Schist
Mica Schist (primarily consisting of muscovite, biotite, and quartz)
metamorphic
Granitic Gneiss
Gneiss (containing Potassium Feldspar and Quartz)
metamorphic
Bauxite
Al2O3·2H2O (principally composed of gibbsite, boehmite, and diaspore)
sedimentary
Travertine
Terrestrial Sedimentary Limestone (CaCO3)
sedimentary
Mica Schist
Mica Schist (primarily Muscovite or Biotite Schist)
metamorphic
Quartz (Citrine or Iron-Stained variety)
Silicon Dioxide (SiO2)
mineral
Yellow Quartz (Citrine Quartz Pebble)
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Orange Aventurine (Sunstone-style Quartzite)
Silicon Dioxide (SiO2) with Goethite or Hematite inclusions
metamorphic
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Conglomerate
Conglomerate rock
sedimentary
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Epidote
{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
mineral
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Natural Pearl
Calcium carbonate (primarily Aragonite and Conchiolin), CaCO3
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Granite (including Pegmatite variants)
Phaneritic Plutonic Rock (composed primarily of Quartz SiO2, Feldspar KAlSi3O8, and Biotite/Muscovite mica)
Igneous
Fuchsite Quartzite (Green Quartzite)
Fuchsite-bearing Quartzite (K(Al,Cr)2(AlSi3O10)(OH)2 + SiO2)
metamorphic
Ironstone Concretion (Moqui Marble variety)
Ferruginous Sandstone Concretion
sedimentary
African Turquoise
African Turquoise (a trade name for Jasper, a variety of Chalcedony: SiO2)
sedimentary
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Mineral
Unakite (Tumbled)
Unakite (altered granite)
metamorphic
Rose Quartz
Silicon dioxide (SiO2) with traces of titanium, iron, or manganese
mineral
Unakite
Unakite (Epidotized Granite)
metamorphic
Unakite
Epidotized Granite
metamorphic
Green Aventurine
Silicon Dioxide (Quartz) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Laterite
Laterite (primarily composed of hydrated oxides of iron and aluminum)
Sedimentary Rock (as a residual soil/rock, it's often considered a type of sedimentary rock due to its formation from weathering, though it can cross into soil science)
Picasso Jasper (also known as Picasso Marble)
Metamorphosed Limestone (Calcium Carbonate with impurities)
metamorphic
Migmatite
Migmatite (Mixed Rock)
metamorphic
Blue Quartzite
Quartzite with inclusions (often Dumortierite or Magnesio-riebeckite), SiO2
metamorphic
Gneiss (River Cobble)
Metamorphic Gneiss
metamorphic
Limonite (Iron Ore)
Limonite; FeO(OH)·nH2O
mineral