Beach Quartz Pebble
Quartz (Silica - SiO2)
mineral
Category
Sedimentary (Processed Mineral Product)
Browse sedimentary (processed mineral product) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Processed Mineral Product) in the encyclopedia
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Goldstone
Avventurina (Cu + SiO2 glass)
mineral
Gneiss (specifically Banded Gneiss)
Gneiss
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Selenite (Satin Spar)
Gypsum (CaSO4·2H2O)
mineral
Satin Spar (often marketed as Selenite)
Gypsum (CaSO4·2H2O)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Geode (Unopened)
Crystalline Quartz or Chalcedony filled Geode (SiO2)
sedimentary
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite in Matrix (often with Chalcopyrite)
Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)
mineral
Calcite (Optical or Clear Calcite)
Calcium Carbonate (CaCO3)
mineral
Septarian Nodule
Septarian Concretion (Calcium Carbonate/Aragonite/Calcite)
sedimentary
Ironstone Concretion
Siderite or Hematite Concretion
sedimentary
Pyrite in Matrix (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Gneiss
Gneiss
metamorphic
Sandstone
Arenite (Siliclastic Sedimentary Rock)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pink Banded Agate (Dyed)
Chalcedony (cryptocrystalline silica), chemical formula SiO2
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Sandstone
Arenite
sedimentary
Bauxite
Bauxite (mixture of hydrous aluminum oxides: Al(OH)3 & AlO(OH))
sedimentary
Sandstone Pebble
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone nugget
Arenite (primarily Quartz SiO2)
sedimentary
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Limonite (Ironstone)
Limonite (mixture of hydrated iron oxides, primarily Goethite α-FeO(OH))
mineral
Blue Dyed Agate Geode
Chalcedony (cryptocrystalline Quartz), SiO2
mineral
Iron Meteorite
Iron-Nickel Meteorite (primarily composed of kamacite and taenite alloys)
Mineral
Sandstone (Yellow/Siltstone variant)
Arenite (SiO2 primarily)
sedimentary
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Selenite (Satin Spar)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Druzy Quartz Geode
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Leopard Skin Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Banded Agate (Silk Agate or Maligano Jasper variant)
Silicon Dioxide (SiO2)
sedimentary
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Yellow Ochre / Limonite
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary