Quartz-veined Sedimentary Rock
Hydrothermally veined Clastic Sedimentary Rock (SiO2 veins in Matrix)
sedimentary
Category
Sedimentary (Chemically Precipitated) Or Metamorphic
Browse sedimentary (chemically precipitated) or metamorphic specimens identified by the Rock Identifier community.
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Moss Agate / Carnelian Agate
Silicon Dioxide (SiO2) with iron and manganese inclusions
mineral
Fossilized Bone (Petrified Bone)
Permineralized Vertebrate Remains
sedimentary
Quartzite with Mica / Gneiss Pebble
Metamorphic Rock (Quartz-Feldspar-Mica aggregate)
metamorphic
Lapis Lazuli (polished cabochon)
Lazurite-rich metamorphic rock (approx. Na6Ca2Al6Si6O24(SO4,S,Cl)2)
metamorphic
Quartzite River Rock
Quartzite (Silicon Dioxide, SiO2)
metamorphic
Quartzite
Quartzite
Metamorphic rock
Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite
Metamorphic Rock (Mainly SiO2)
metamorphic
Chert (Flint Nodule)
Silicon Dioxide (SiO2)
sedimentary
Goldstone (Synthetic Aventurescence Glass)
Cuprous Aventurescent Glass (Silicon Dioxide with Copper inclusions)
mineraloid / man-made material
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Pyrite
Pyrite (Iron Disulfide), FeS2
Mineral
Quartz
Silicon dioxide (SiO₂)
Mineral
Red Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Tiger's Eye
Tiger's eye (Pseudomorph of Quartz after Crocidolite), SiO2
metamorphic
Agate
Silicon Dioxide (SiO2)
mineral
Quartz Vein in Basalt or Sedimentary Host Rock
Silica-veined lithic fragment (SiO2 in host matrix)
sedimentary
Red Quartzite
Metamorphic Quartzite (rich in hematite impurities)
metamorphic
Chert (Flint)
Chert (Silicon Dioxide, SiO2)
sedimentary
Chert Nodules in Limestone
Cryptocrystalline Quartz (SiO2) within Calcium Carbonate (CaCO3)
sedimentary
Chert (Jasper/Agate variant)
Microcrystalline Quartz (SiO2) with iron oxide inclusions
sedimentary
Yellow Jasper with Red Inclusion
Silicon Dioxide (SiO2) with Iron Oxides
sedimentary
Brown Agate
Cryptocrystalline Silica (SiO2)
sedimentary
Jasper (Red and Tan Jasper)
Microcrystalline Quartz (SiO2) with iron oxide inclusions
sedimentary
Native Gold Nugget
Native Gold (Au)
mineral
Quartz-rich breccia or quartzite with iron-oxide veining
Microcrystalline to granular SiO₂ (quartz), with hematite/goethite and minor feldspar or mica
metamorphic
Quartzite with Pyrite Inclusions
Metamorphic Quartz-rich Rock
metamorphic
Chert / Flint
Microcrystalline Quartz (SiO2)
sedimentary
Chert / Flint
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Chert (River Pebble)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (often colloquially called Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Banded Chert
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline quartz (SiO2)
sedimentary
Garnet in Matrix
Almandine Garnet (Fe3Al2(SiO4)3)
metamorphic
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Bauxite
Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)
sedimentary
Quartz / Quartzite
Silicon Dioxide (SiO2)
Mineral / Metamorphic
Quartzite (with Mica / Quartzite Schist)
SiO2 (Silica) with minor Muscovite Mica KAl2(AlSi3O10)(OH)2
metamorphic
Chert / Flint
Microcrystalline quartz (SiO2)
sedimentary
Generic Rock Fragment
Rock Fragment
sedimentary