Ferruginous Quartz
Silicon Dioxide (SiO2) with Hematite/Limonite inclusions
mineral
Category
Sedimentary (Chemically Precipitated) Or Metamorphic
Browse sedimentary (chemically precipitated) or metamorphic specimens identified by the Rock Identifier community.
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Quartz Vein / Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Quartz
Quartz (SiO₂)
Mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (consisting primarily of SiO2)
metamorphic
Quartzite (Rounded Pebble)
Quartzite (predominantly SiO2)
metamorphic
Quartzite
Quartzite (SiO2 with minor impurities)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Chert (Iron-stained or Jasperoid)
Microcrystalline Quartz (SiO2)
sedimentary
Pink Dyed Agate
Silicon Dioxide (SiO2) with artificial pigment
sedimentary
Dyed Blue Agate Slice
Chalcedony (Silicon Dioxide, SiO2)
mineral
Quartzite
Metamorphic rock predominantly composed of Quartz (SiO2)
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Chert (Flint) / Silicified Limestone
Microcrystalline Quartz (SiO2)
sedimentary
Banded Quartzite
Metamorphosed Quartz Sandstone / Quartzite
metamorphic
Quartz Mica Schist
Mica-Quartz Schist (Chemical: SiO2 + KAl2(AlSi3O10)(OH)2)
metamorphic
Green Banded Agate
Silicon Dioxide (SiO2)
mineral
Quartz (Milky or Druzy Quartz)
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
mineral
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
sedimentary
Chert
Chert (SiO2)
sedimentary
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Banded Chert (River Stone)
Silicon Dioxide (SiO2)
sedimentary
Chert (containing Calcite or Quartz inclusions)
Silicon Dioxide (SiO2) with varying mineral impurities
sedimentary
Chert (Gravel Fragment)
Silicon dioxide (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO₂)
Mineral
Unidentifiable Rock Fragment
Uncertain
Quartz (Milky or Smoky variant)
Silicon Dioxide (SiO2)
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Jasper Beads
Microcrystalline Quartz (SiO2)
sedimentary
Jasper Pebble
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Celestite (Celestine)
Strontium Sulfate (SrSO4)
mineral
Chert (Nodule)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz Vein Rock
Silicon Dioxide (SiO2)
mineral
Howlite
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
mineral
Chert (Jasper/Common Chert)
Microcrystalline Quartz (SiO2)
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic