Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
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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Selenite (Satin Spar)
Gypsum (CaSO4·2H2O)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Celestite
Celestine (SrSO4)
mineral
Jasper Beads
Microcrystalline Quartz (SiO2)
sedimentary
Ferruginous Quartz
Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Geode
Quartz / Chalcedony nodule
sedimentary
Glauconitic Sandstone
Glauconitic Sandstone (Greensand)
sedimentary
Sandstone Pebble
Arenite (specifically Lithic or Quartz Arenite)
sedimentary
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide)
mineral
Limonite/Ironstone
Limonite (FeO(OH)·nH2O)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Gold Mineral
Native Gold (Au)
mineral
Quartz (Tumbled)
Silicon Dioxide (SiO2)
mineral
Limonite (Ironstone Concretion)
Limonite (FeO(OH)·nH2O)
mineral
Agated Chert
Microcrystalline Quartz (SiO2)
sedimentary
Hematite
Hematite (Fe2O3)
mineral
Optical Calcite
Calcium Carbonate (CaCO3)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Limonite/Goethite Iron Concretion
Hydrated iron oxide-hydroxide mixture (FeO(OH)·nH2O)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
sedimentary
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Rhodonite
Rhodonite (Mn,Fe,Mg,Ca)SiO3
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Chalcedony (Agate/Carnelian pebbles)
Cryptocrystalline Quartz (SiO2)
mineral
Yellow Jasper / Chalcedony
Silicon Dioxide (SiO2) with iron inclusions
mineral
Blue Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Fossil Sea Urchin (Echinoid)
Echinoidea fossil (often replaced by silica or calcite)
fossil
Iron-stained Quartz (with Limonite/Hematite)
Silicon Dioxide (SiO2) with Iron Oxide inclusions (FeO(OH) or Fe2O3)
Mineral
Yellow Ochre (Limonite)
Limonite (FeO(OH)qnH2O)
sedimentary
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Blue Howlite (Dyed)
Dyed Howlite (Calcium Borosilicate Hydroxide, Ca2B5SiO9(OH)5)
mineral
Aragonite Star Cluster
Aragonite (CaCO3)
mineral
White Howlite
Howlite (Hydrated calcium borosilicate, Ca2B5SiO9(OH)5)
mineral
Hematite
Hematite (Fe2O3)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Botryoidal Goethite
Goethite (α-Fe3+O(OH))
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral