Milky Quartz
Silicon Dioxide (SiO2)
mineral
Category
Sedimentary Or Metamorphic Derived
Browse sedimentary or metamorphic derived specimens identified by the Rock Identifier community.
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Celestite (Celestine)
Strontium sulfate (SrSO4)
mineral
Garnet in Matrix
Almandine Garnet (Fe3Al2(SiO4)3)
metamorphic
Lapis Lazuli
Lapis Lazuli (a rock, not a single mineral; primary mineral is Lazurite (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2
Metamorphic rock
Aventurine (Green Aventurine)
Quartz with Fuchsite Inclusions (SiO2)
Mineral
Red Jasper
CHERT (SiO2) with Hematite impurities
sedimentary
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Mookaite Jasper
Silicified Radiolarite (SiO2)
sedimentary
Celestine (or Celestite)
Strontium sulfate (SrSO4)
mineral
Red Jasper
Silicon Dioxide (SiO2)
sedimentary
Carnelian
Chalcedony (cryptocrystalline quartz), SiO2 (Silicon Dioxide)
mineral
Celestite (Celestine)
Strontium Sulfate (SrSO4)
mineral
Blue Celestite (Celestine) Cluster
Strontium sulfate (SrSO4)
mineral
Shale or Argillite
Shale (sedimentary) / Argillite (metamorphic)
Sedimentary or Metamorphic (low-grade)
Banded Agate (specifically Moss Agate or Plume Agate variety)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Milky Quartz
Quartz (SiO2)
mineral
Travertine
Calcareous Tufa (CaCO3)
sedimentary
Banded Jasper
Silicon Dioxide (SiO2)
Mineral/Sedimentary Rock (as a cryptocrystalline variety of quartz)
Celestine (Celestite)
Strontium sulfate (SrSO4)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Jasper (Banded Jasper)
Silicon Dioxide (SiO2) with impurities
sedimentary
Travertine
Travertine (CaCO3 - Calcium Carbonate)
sedimentary
Kyanite
Kyanite (Al2SiO5)
Mineral
Jasper (specifically Fancy Jasper or Bloodstone variety)
Silicon Dioxide (SiO2) with impurities (Iron oxides/silicates)
sedimentary
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminum phosphate)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Demantoid Garnet on Matrix
Demantoid (variety of Andradite Garnet) - Ca3(Fe3+)2(SiO4)3
mineral
Green Fluorite (likely synthetic or heat-treated for jewelry)
Calcium Fluoride (CaF2)
mineral
Psilomelane (Black Hematite/Manganese Ore)
Barium Manganese Oxide (Formula: BaMn9O18(OH)4)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Ruby in Zoisite
Ruby (Corundum, Al2O3) in Zoisite (Calcium aluminum silicate hydroxide, Ca2Al3(SiO4)3(OH)) with some Hornblende
Metamorphic Rock (specifically a rock composed of minerals)
Celestite (Celestine)
Strontium Sulfate (SrSO4)
mineral
Hematite
Iron (III) Oxide, Fe2O3
Mineral
Breciated Chert
Silicon Dioxide (SiO2) with Clastic Structure
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Magnetite (Iron Ore)
Iron(II,III) oxide (Fe3O4)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Rhodochrosite
Rhodochrosite, Manganese Carbonate (MnCO3)
mineral
Pyrite in Matrix (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Petoskey Stone
Hexagonaria percarinata (Fossilized Rugose Coral)
sedimentary
Chert / Flint Conglomerate
Silicified Sedimentary Breccia (primarily SiO2)
sedimentary
Zoisite with Ruby
Anyolite (Calcium aluminum hydroxy silicate with Corundum) Ca2Al3(SiO4)3(OH)
metamorphic