Black Flint
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Category
Sedimentary
Browse sedimentary specimens identified by the Rock Identifier community.
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Yellow Jasper
Silicon Dioxide (SiO2) with iron hydroxides
sedimentary
Chalcedony (specifically Agate and Carnelian variety)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Amber
Succinate (Fossilized Tree Resin)
mineraloid
Chalcedony (Agate/Jasper mix)
Cryptocrystalline Quartz (SiO2)
sedimentary
Clear Quartz (Rock Crystal)
Crystalline Silicon Dioxide (SiO2)
gemstone
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
sedimentary
Chert (Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Blue Apatite
Calcium Fluorophosphate - Ca5(PO4)3F
mineral
Garnet (Polished)
Nesosilicate (Group formula: X3Y2(SiO4)3)
gemstone
Pyrite
Iron Sulfide (FeS2)
mineral
Moqui Marble (Concretion)
Iron Oxide Concretion
sedimentary
Chalcedony (Agate and Carnelian varieties)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Yellow Chalcedony
Silicon Dioxide (SiO2)
mineral
Grey Chalcedony
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Apatite group (Ca5(PO4)3(F,Cl,OH))
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Blue Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Banded Chalcedony (Agate)
Silicon Dioxide (SiO2)
mineral
Limonite (Iron Ore)
Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)
mineral理论上属于沉积成因
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Red Jasper (Jasper)
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Amber
Succinate (Fossilized Resin)
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Carnelian
Carnelian (Silicon Dioxide, SiO2)
mineral
Jasper
Microcrystalline Quartz (SiO2)
Sedimentary/Mineral
Chalcedony on Matrix
Silicon Dioxide (SiO2)
mineral
Mixed Mineral and Fossil Collection
Multi-specimen assemblage (SiO2, CaCO3, FeS2, etc.)
mineral
Ruby in Kyanite
Corundum in Disthene (Al2SiO5 + Al2O3)
metamorphic
Quartz (likely Herkimer Diamond style)
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon dioxide, SiO2
Mineral
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Quartz (Chert/Chunky Chalcedony)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Crystalline variety)
Silicon Dioxide (SiO2)
mineral
Geode or Concretion
Silica-rich Concretion or Unopened Geode (SiO2)
sedimentary
Marble
Recrystallized Calcite (CaCO3)
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral