Quartzite
Quartzite (primarily SiO2)
metamorphic
Category
Metamorphic Or Sedimentary
Browse metamorphic or sedimentary specimens identified by the Rock Identifier community.
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Unakite
Epidotized Granite
metamorphic
Slate
Slate (Foliated metamorphic rock consisting mainly of quartz and muscovite or illite)
metamorphic
Stiped Slate Beach Pebble
Low-grade Metamorphic Slate with Quartz Vein (SiO2 on Phyllosilicate base)
metamorphic
Slate
Foliated Metamorphic Rock (primarily composed of quartz, illite, chlorite, and micas)
metamorphic
Quartzite (or Massive Quartz)
Silicon Dioxide (SiO2)
metamorphic
Blue Quartzite (Aventurine)
Quartzite (primarily SiO2) with inclusions of Dumortierite or Magnesio-riebeckite
metamorphic
Mica Schist
Medium-grade regional metamorphic rock (composition varies)
metamorphic
Red Quartzite
Metamorphic Quartzite (predominantly SiO2 with iron oxide impurities)
metamorphic
Schist
Mica Schist (Group of medium-grade metamorphic rocks)
metamorphic
Quartzite with Iron Inclusions
Metamorphic Silicon Dioxide (SiO2) with impure Limonite/Hematite
metamorphic
Slate
Metamorphosed Shale (Fine-grained Foliated Metamorphic Rock)
metamorphic
Schist (Biotite/Mica Schist)
Medium-grade regional metamorphic rock (rich in Phyllosilicates)
metamorphic
Mica Schist
Mica Schist (predominantly Muscovite or Biotite sheet silicates)
metamorphic
Schist (Garnet-Mica Schist)
Garnetiferous Mica Schist (primarily Muscovite/Biotite and Almandine Garnet)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Unakite (Tumbled)
Unakite (altered granite)
metamorphic
Epidosite
Epidosite (composed primarily of Epidote and Quartz)
metamorphic
Cloudy Quartz with Mica inclusions
Silicon Dioxide (SiO2) with accessory Muscovite KAl2(AlSi3O10)(OH)2
mineral
White Jade (Nephrite)
Nephrite, Ca2(Mg,Fe)5Si8O22(OH)2
Mineral
Blue Sapphire
Corundum (Al2O3 with trace Titanium and Iron)
mineral
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Marble (Fire and Ice or Pink Veined)
Metamorphosed Limestone (principally CaCO3)
metamorphic
Dragon Blood Jasper
Epidote-containing Quartz Chalcedony (SiO2 with Ca2(Al, Fe)3(SiO4)3(OH))
metamorphic
Red Quartzite
Metamorphosed Quartz Sandstone (SiO2 with Iron Oxide impurities)
metamorphic
Green Quartzite (or Aventurine)
SiO2 (Silicon Dioxide) primarily, with Fuchsite inclusions (K(Al,Cr)2AlSi3O10(OH)2)
metamorphic
Garnet Rhyolite
Rhyolite (high-silica volcanic rock) with almandine/spessartine garnet
igneous
Quartzite (specifically Pink or Red Quartzite)
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Greenstone / Greenstone Pebble
Greenschist (metamorphosed basalt or gabbro)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite Cobble
Metamorphosed Quartz Sandstone (primarily SiO2)
metamorphic
Quartzite
Quartzite
metamorphic
Green Quartzite (Aventurine variety)
Silicon Dioxide (SiO2) with inclusions of Fuchsite
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Shale
Shale (Consolidated fine-grained clay/silt)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 dominant)
sedimentary
Blue Quartzite
Quartzite with inclusions (often Dumortierite or Magnesio-riebeckite), SiO2
metamorphic