Halite (Rock Salt)
Halite (Sodium Chloride, NaCl)
mineral
Category
Mineral (Sedimentary Context)
Browse mineral (sedimentary context) specimens identified by the Rock Identifier community.
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Angelite
Anhydrite (Calcium Sulfate, CaSO4)
mineral
Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
mineral
Chalcedony (Common Opal variant or Quartz)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (primarily SiO2 with various cementing agents)
sedimentary
Jasper (specifically Polychrome or Desert Jasper)
Silicon Dioxide (SiO2) with iron oxide and other mineral impurities
sedimentary (chemical/biological origin)
Titanium Coated Kyanite (Aura Kyanite)
Aluminosilicate (Al2SiO5) with a Titanium-Niobium vacuum-deposited coating
metamorphic
Quartz Geode
Silicon Dioxide (SiO2) in a Geode body
sedimentary or igneous (host environment)
Sandstone (likely Greywacke variant)
Arenite
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Sandstone
Sandstone (clastic sedimentary rock, composed predominantly of sand-sized minerals or rock fragments)
Sedimentary Rock
Jasper with Quartz Veining
Silicon Dioxide (SiO2) - Cryptocrystalline Chalcedony
sedimentary
Jasper with Epidote
Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate (Ca2(Al,Fe)3(SiO4)3(OH))
sedimentary
Orthoceratid Fossil in Limestone
Orthoceras (extinct genus of Nautiloid Cephalopod)
sedimentary
Sandstone with Liesegang Rings
Arenite with Iron Oxide Concretions
sedimentary
Quartzite with inclusions
Quartzite (primarily SiO2)
metamorphic
Sandstone (Beach Pebble)
Clastic sedimentary rock (primarily Quartz and Feldspar)
sedimentary
Sandstone
Arenite/Quartz Arenite
sedimentary
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 cementation)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (likely Graywacke or Arkose variant)
Clastic Sedimentary Rock (SiO2 based)
sedimentary
Red Sandstone
Arenite (primarily SiO2 with hematite/iron oxide coating)
sedimentary
Quartz
Quartz (Silicon Dioxide - SiO2)
Mineral
Jasper
Silicon Dioxide (SiO2)
sedimentary
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Clear Quartz / Rock Crystal
Silicon Dioxide (SiO2)
mineral
Ironstone Concretion (Limonite/Goethite)
Iron oxide concretion (contains FeO(OH)·nH2O)
sedimentary
Ironstone Nodules / Siderite Concretion
Siderite (FeCO3) / Ferruginous Septarian Concretion
sedimentary
Fossilized Shark Tooth
Fossilized Elasmobranchii tooth (likely Odontaspis or Carcharias)
sedimentary
Jasper with Quartz Druzy
Silicon Dioxide (SiO2)
sedimentary
Quartz Geode in Chert/Limestone Matrix
Silicon Dioxide (SiO2) within Sedimentary Host Rock
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with impure Iron oxides
sedimentary
Red Sandstone
Arenite (primarily Quartz with Iron Oxide coating)
sedimentary
Red Jasper
Silicon Dioxide with Iron inclusions (SiO2)
sedimentary
Chert (Common Opal/Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Brecciated Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Liesegang Ring Siltstone
Siltstone with iron oxide Liesegang bands
sedimentary
Fluorite in Matrix
Fluorite (CaF2) within a host rock matrix
Mineral
Jasper (likely Polychrome or Desert Jasper)
Silicon Dioxide (SiO2) with impurities
sedimentary (chemically precipitated mineral)
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Red Jasper
Jasper (Silicate mineral - SiO2)
sedimentary