Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Category
Sedimentary (Secondary Classification: Cryptocrystalline Quartz)
Browse sedimentary (secondary classification: cryptocrystalline quartz) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Secondary Classification: Cryptocrystalline Quartz) in the encyclopedia
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Jasper with Quartz Veining
Silicon Dioxide (SiO2)
sedimentary
Jasper (Red Jasper with Quartz veins)
Jasper (Silicon Dioxide, SiO2)
sedimentary
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Flint
SiO2 (Cryptocrystalline Quartz)
sedimentary
Chalcedony (Tumbled)
Cryptocrystalline Quartz (SiO2)
mineral
Blue Chalcedony
Cryptocrystalline Quartz (SiO2)
mineral
Chert (Flint)
Cryptocrystalline Quartz (SiO2)
sedimentary
Graywacke with Quartz Veins
Argillaceous Sandstone (SiO2 composition in veins)
sedimentary
Chert (Arrowhead Fragment)
Cryptocrystalline quartz (SiO2)
sedimentary
Polished orbicular granite (likely larvikite-type stone)
Coarse-grained granitoid composed mainly of feldspar, quartz, and dark mafic minerals; exact variety is uncertain from the image
igneous
Agate (or Chalcedony pebble)
Silicon Dioxide (SiO2)
mineral
Geode (unopened)
Calcedony-lined Geode (SiO2)
sedimentary
Flint
SiO2 (Cryptocrystalline Quartz)
sedimentary
Chert (Yellow Jasper)
Cryptocrystalline Quartz (SiO2)
sedimentary
Banded Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
Dyed Agate Slice
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2) within a secondary sedimentary structure
sedimentary
Quartz Geode
Silicon Dioxide (SiO2) within a secondary sedimentary structure
sedimentary
Chert / Flint Handaxe
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert / Flint
Cryptocrystalline quartz (SiO2)
Sedimentary
Iron-stained Quartz (with Limonite/Hematite)
Silicon Dioxide (SiO2) with Iron Oxide inclusions (FeO(OH) or Fe2O3)
Mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Quartz-veined Siltstone
Siltstone with Quartz (SiO2) veins
sedimentary
Botryoidal Chalcedony (Geode fragment)
Silicon Dioxide (SiO2)
mineral
Jasper (yellow/cream variety)
SiO₂ (Cryptocrystalline Quartz)
Sedimentary
Limonite (Iron Ore)
Hydrous ferric oxides (FeO(OH)·nH2O)
mineral
Agate (specifically a Yellow/Honey Agate)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Flint
SiO2 (Cryptocrystalline Quartz)
sedimentary
Flint
Cryptocrystalline quartz (SiO2)
sedimentary
Agate Geode
Cryptocrystalline Quartz (SiO2)
mineral
Chalcedony
Cryptocrystalline Quartz (SiO2)
mineral
Chalcedony (Agate)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chalcedony (Agate/Jasper mix)
Cryptocrystalline Quartz (SiO2)
sedimentary
Jasper (likely Polychrome or Mookaite variants)
Silicon Dioxide (SiO2) with iron oxide and hydroxide inclusions
sedimentary (chemically precipitated)
Quartz (Chalcedony/Agate)
Silicon Dioxide (SiO2)
mineral
Flint
SiO2 (Cryptocrystalline Quartz)
sedimentary
Banded Agate
Cryptocrystalline Quartz (SiO2)
sedimentary
Blue Chalcedony
Cryptocrystalline Quartz (SiO2)
mineral
Agate (Chert/Chalcedony)
Cryptocrystalline Quartz (SiO2)
sedimentary