Banded Calcite (often sold as Caribbean Calcite or Mexican Onyx)
Calcium Carbonate (CaCO3)
mineral
Category
Mineral, Often Found In Sedimentary Deposits
Browse mineral, often found in sedimentary deposits specimens identified by the Rock Identifier community.
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Fluorite
Calcium Fluoride (CaF2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Quartz / Agate Nodule
Silicon Dioxide (SiO2)
mineral
Wonderstone Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Sedimentary rock with quartz veining
Laminated siltstone or mudstone with hydrothermal quartz veins
sedimentary
Quartz pebble
Silicon dioxide (SiO2)
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Native Silver Nugget
Silver (Ag)
mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Rough Green Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Quartz Pebble (Chalcedony/Agate variety)
Silicon Dioxide (SiO2)
mineral
Peacock Ore (Chalcopyrite)
Chalcopyrite (CuFeS2)
mineral
Banded Chalcedony (Agate)
Cryptocrystalline Quartz (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Dendritic Agate
Dendritic Agate (Silicon Dioxide with Manganese or Iron Oxide inclusions, SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Ruby
Corundum (Al2O3 with Chromium impurities)
mineral
Sandstone (with Iron Siderite Concretion)
Arenite with Ironstone Concretion (FeCO3)
sedimentary
Pyrite (Fool's Gold) in Matrix
Iron Sulfide (FeS2)
mineral
Turquoise
Turquoise (Hydrated phosphate of copper and aluminium) - CuAl6(PO4)4(OH)8·4H2O
mineral
Orange Quartz (or Tumbled Carnelian)
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Howlite
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
mineral
Green Calcite (Onyx Marble)
Calcium Carbonate (CaCO3)
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Blue Apatite
Apatite (Group), Ca5(PO4)3(F,Cl,OH)
mineral
River Rock (Mossy)
Stream-rounded Clast (likely Siltstone or Sandstone with bryophytes)
sedimentary
Carnelian
Carnelian (Cryptocrystalline Quartz, SiO2)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chert / Chalcedony
Microcrystalline Quartz (SiO2)
sedimentary
Glauconitic Sandstone
Glauconitic Sandstone (complex silicate formula: (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)
sedimentary
Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
Chert (Jasper)
Cryptocrystalline Quartz (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Fossilized Bone
Vertebrate fossil (mineralized bone)
fossil
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Yellow Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Fluorite
Calcium Fluoride (CaF2)
mineral