Chert (specifically Jasper)
Silicon dioxide (SiO2) with iron oxide inclusions
Category
Browse mineral, often found in sedimentary deposits specimens identified by the Rock Identifier community.
Chert (specifically Jasper)
Silicon dioxide (SiO2) with iron oxide inclusions
Gold Nugget
Native Gold (Au)
Amber
Succinite (Fossilized Resin)
Sandstone (Weathered Pebble)
Arenite (composed primarily of SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with Iron inclusions
Arsenopyrite in Quartz Matrix
Arsenopyrite (FeAsS)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Fluorite in Matrix
Fluorite (CaF2) within a host rock matrix
Chert (Yellow Jasper/River Pebble)
Microcrystalline Quartz (SiO2)
Quartz
Silicon dioxide (SiO2)
Sugilite
KNa2(Fe,Mn,Al)2Li3Si12O30 (Potassium Sodium Lithium Iron Manganese Aluminum Silicate)
Sandstone (Picture Sandstone)
Arenite (primarily SiO2)
Imperial Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz with Mineral Inclusions
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium and/or Vanadium impurities
Gold Nugget
Native Gold (Au)
Raw Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
Gold-bearing Quartz with Iron Oxides
Quartz (SiO2) with Limonite/Goethite (FeO(OH)) and Pyrite (FeS2)
Banded Calcite (often sold as 'Green Onyx')
Calcite (Calcium Carbonate, CaCO3)
Yellow Chert or Jasper
Silicon Dioxide (SiO2)
Petrified Dinosaur Bone (Gembone)
Agatized Dinosaur Bone
Conglomerate
Conglomerate (clastic sedimentary rock)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Chert (Jasper/Flint variant)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Sandstone (with carbonaceous plant fragments)
Arenite (composed primarily of SiO2)
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
Sulfur
Native Sulfur (S8)
Chert (Nodule)
Microcrystalline Quartz (SiO2)
Chert (Flint nodule)
Chert (SiO2)
Chert (specifically Flint or Jasper variant)
Cryptocrystalline Quartz (SiO2)
Chert (Grey-Green Flint)
Microcrystalline silicon dioxide (SiO2)
Chert (Flint variety)
Chert (Cryptocrystalline variety of Quartz, SiO2)
Quartzite Pebble (River Rock)
Quartzite (mainly SiO2)
Bornite (Peacock Ore)
Bornite (Copper iron sulfide - Cu5FeS4)
Fluorite
Fluorite (Calcium Fluoride, CaF2)
Chert (specifically Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Quartz Geode
Silicon Dioxide (SiO2) in a concretionary structure
Graphite
Graphite (Carbon, C)
Chalcedony
Chalcedony (a microcrystalline variety of Quartz, SiO2)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily Quartz - SiO2)
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
Malachite
Copper carbonate hydroxide Cu2CO3(OH)2
Jasper
Silicon dioxide (SiO2) with impurities