Red Jasper (or Banded Jasper)
Silicon Dioxide (SiO2 with Hematite impurities)
mineral
Category
Organic (Sedimentary Associated)
Browse organic (sedimentary associated) specimens identified by the Rock Identifier community.
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Bituminous Coal
Organic Sedimentary Rock (Carbon-based)
sedimentary
Chert (Chert Nodule with Chalky Cortex)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Chert (Jasper variation)
Silicon Dioxide (SiO2)
sedimentary
Fossilized Shark Tooth (Partial) or Coprolite
Elasmobranchii (fossil) or Coprolite (trace fossil)
fossil
Chert / Flint Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Graphite
Graphite (Carbon, C)
mineral
Chert (Yellow Jasper)
Cryptocrystalline Quartz (SiO2)
sedimentary
Graphite
Carbon (C)
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Microcrystalline quartz (SiO2)
sedimentary
Bamboo Leaf Jasper
Silicified Siltstone or Jasper (SiO2)
sedimentary
Limestone Pebble
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Siderite Concretion in Shale
Iron carbonate (FeCO3) in Mudstone/Shale matrix
sedimentary
Fluorite
Calcium Fluoride (CaF2)
mineral
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Gold
Native Gold (Au)
mineral
Red Jasper (Chert)
Silicon dioxide with iron inclusions (SiO2)
sedimentary
Galena
Lead(II) sulfide (PbS)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Pyrite with Galena and Sphalerite on Matrix
Iron Sulfide (FeS2), Lead Sulfide (PbS), Zinc Sulfide (ZnS)
mineral
Red Jasper
Microcrystalline Quartz (SiO2) with iron oxide inclusions
sedimentary
Rhodonite (in matrix)
Rhodonite (Mn,Fe,Mg,Ca)SiO3
Mineral
Pyrulite (Pyrite / Chalcopyrite)
Iron Sulfide (FeS2) or Copper Iron Sulfide (CuFeS2)
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Jasper (Green/Dragon Blood variety)
Silicon Dioxide (SiO2) with iron/clay inclusions
sedimentary
Galena
Lead(II) Sulfide (PbS)
mineral
Ironstone concretion / Limonitic Sandstone
Goethite/Hematite Cemented Sandstone (Hydrated Iron Oxide)
sedimentary
Likely bituminous coal
Coal, predominantly carbon-rich organic matter; exact rank cannot be confirmed visually
sedimentary
Amber (likely a small rough amber piece)
Fossilized plant resin; amber is an organic mineraloid, not a crystalline mineral
gemstone
Fluorite
Calcium fluoride (CaF2)
mineral
Heliotrope (Bloodstone)
Silicon Dioxide with Iron Oxide (SiO2)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Red Jasper (Jasper)
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Jasper
Silicon dioxide, SiO2
Mineral
Green Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral