White Jade / White Chalcedony
Nephrite Jade (Ca2(Mg,Fe)5Si8O22(OH)2) or Chalcedony (SiO2)
Mineral
Category
Sedimentary (Chemically Precipitated) Or Metamorphic
Browse sedimentary (chemically precipitated) or metamorphic specimens identified by the Rock Identifier community.
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Quartzite
SiO2 (Quartzite)
metamorphic
Quartzite
Metamorphic Quartz Rock (SiO2)
metamorphic
Chalcedony (Agate/Chert variety)
Silicon Dioxide (SiO2)
mineral
Common Opal in Host Rock
Hydrated Silica (SiO2·nH2O)
mineraloid
Limestone (River Pebble)
Calcite (Calcium Carbonate) - CaCO3
sedimentary
Blue Quartz
Silicon dioxide (SiO2) with inclusions
mineral
Quartz Vein / Quartzite Specimens
Silicon Dioxide (SiO2)
mineral
Quartz with Mica/Schist inclusion
Silicon Dioxide (SiO2) with Phyllosilicates
mineral
Quartzite Pebble (Iron-stained Quartz)
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
metamorphic
Tumbled brown quartz/chert pebble
Microcrystalline quartz (SiO₂), possibly chert or jasper
mineral
Quartz
Silicon Dioxide (SiO2)
Mineral
Chert (also known as Flint or Common Chalcedony)
Cryptocrystalline Silica (SiO2)
sedimentary
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Botryoidal Chalcedony
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2 with Hematite impurities)
mineral
Amethyst Geode Segment
Silicon Dioxide (SiO2) with trace Iron impurities
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Chalcedony (Botryoidal or Chalcedony Rose)
Silicon dioxide (SiO2)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Hematite with Magnetite
Iron Oxide (Fe2O3)
mineral
Celestine (or Celestite) Geode
Strontium Sulfate (SrSO4)
mineral
Quartz Geode or Nodular Quartz
Silicon Dioxide (SiO2) in Host Matrix
mineral
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Chalcedony (Common Agate)
Silicon Dioxide (SiO2)
mineral
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite pebble
Quartzite (primarily SiO2)
metamorphic
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Yellow Quartzite
Silicon Dioxide (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Red Quartzite (Ferruginous Quartz)
Quartzite (SiO2 with Fe2O3 inclusions)
metamorphic
Quartzite Pebble (River Rock)
Metamorphic Quartzite (SiO2)
metamorphic
Quartz Calcite Vug in Limestone
Calcium Carbonate (CaCO3) with Silicon Dioxide (SiO2) inclusions
sedimentary
Veined Quartz
SiO2 (Silicon Dioxide)
Mineral
Ferruginous Sandstone
Ferruginous Sandstone (Quartz Arenite with Iron Oxide cement)
sedimentary
Eyestone Flint
SiO2 (Microcrystalline Quartz / Flint)
sedimentary