Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
sedimentary
Category
Mineral, Often Found As A Rock (Metamorphic)
Browse mineral, often found as a rock (metamorphic) specimens identified by the Rock Identifier community.
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Muscovite Mica
Muscovite (Potassium Aluminum Silicate Hydroxide Fluoride), KAl2(AlSi3O10)(OH,F)2
mineral
Milky Quartz in Gneiss
Quartzite / Foliated Gneiss containing SiO2
metamorphic
Shale or Slate
Shale (Sedimentary) or Slate (Metamorphic)
sedimentary or metamorphic
Chert (Jasper)
Microcrystalline Quartz (SiO2) with hematite impurities
sedimentary
Quartz (Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Chalcedony
Chalcedony (SiO2)
mineral
Chert (Nodule)
Microcrystalline Silica (SiO2)
sedimentary
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Green Aventurine
Aventurine Quartz (SiO2 + Cr-bearing Mica inclusions)
metamorphic
Quartz Vein / Milky Quartz
Silicon Dioxide (SiO2)
mineral
Green Quartz (Aventurine or Prase)
Silicon Dioxide (SiO2) with inclusions
mineral
Dragon Blood Jasper
SiO2
mineral
Chert (Jasper/Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Banded Chalcedony (Agate)
Cryptocrystalline Quartz (SiO2)
mineral
Chert (Field Stone)
Chert (SiO2)
sedimentary
Pyrite in Matrix
Iron Sulfide (FeS2) embedded in host rock
mineral
Quartz fragment (Pebble)
Silicon Dioxide (SiO2)
mineral
Quartz Vein in Sandstone
Quartz (SiO2) in Clastic Sedimentary Rock
sedimentary
Chert
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)
metamorphic
Amphibolite (specifically Hornblende Schist/Gneiss)
Amphibole-rich Metamorphic Rock
metamorphic
Quartz (Milky or Yellowish)
Silicon Dioxide (SiO2)
mineral
Greenstone / Serpentinite
Serpentinite (composed primarily of serpentine minerals: Mg3Si2O5(OH)4)
metamorphic
Ruby in Kyanite
Al2O3 (Corundum) in Al2SiO5 (Kyanite-Fuchsite-Quartz)
metamorphic
Tumbled Clear Quartz/Rock Crystal
Silicon Dioxide (SiO2)
mineral
Chert (Pebble)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Banded Gneiss
Banded Gneiss (Metamorphic Rock)
metamorphic
Quartzite with Pyrite Inclusions
Metamorphic Quartz-rich Rock
metamorphic
Chert (specifically Brown Chert or Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Ruby in Zoisite (Anyolite)
Corundum var. Ruby in Zoisite (Al2O3 + (Ca2Al3(SiO4)3(OH)))
metamorphic
Tiger Iron
Tiger Iron (Composition: SiO2, Fe2O3, Fe3O4)
metamorphic
Chert (Pebble)
Microcrystalline Quartz (SiO2)
sedimentary
Garnet in Schist or Pegmatite
Almandine Garnet (Fe3Al2(SiO4)3) in host rock
metamorphic
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
mineral
Magnetite (Lodestone)
Iron(II,III) oxide (Fe3O4)
mineral
Garnet Schist
Almandine Garnet in Micaceous Schist
metamorphic