Jasper
Microcrystalline Quartz (SiO2)
Category
Browse mineral, often found in sedimentary deposits specimens identified by the Rock Identifier community.
Jasper
Microcrystalline Quartz (SiO2)
Magnetite (Iron Ore)
Magnetite (Fe3O4)
Limonite (Iron Ore)
Limonite (mixture of hydrated iron(III) oxide-hydroxides)
Aura Quartz (Coated Quartz)
Silicon Dioxide (SiO2) treated with metallic vapor
Yellow Quartz
Silicon Dioxide (SiO2)
Yellow Jasper
Silicon Dioxide (Microcrystalline Quartz), SiO2
Bauxite
Bauxite (mixture of Hydrous Aluminum Oxides)
Botryoidal Goethite on Quartz
Goethite (α-Fe3+O(OH)) on Quartz (SiO2)
Zebra Jasper
Silicified sedimentary rock (SiO2) with mineral inclusions
Pyrite in Host Rock
Iron Disulfide (FeS2)
Travertine
Travertine (CaCO3)
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
Fossilized Bone Fragment
Permineralized Vertebrate Bone (Hydrox yapatite replaced by Silica or Calcite)
White Precious Opal
Hydrated Silica (SiO2·nH2O)
Yellow Jade (often Serpentine or Dolomite)
Primarily Serpentine (Mg3Si2O5(OH)4) or Dolomite (CaMg(CO3)2), though the term 'yellow jade' is also sometimes applied to varieties of true nephrite or jadeite.
Milky Quartz
Silicon dioxide (SiO2)
Green Fluorite
Calcium Fluoride (CaF2)
Orange Calcite
Calcite (Calcium Carbonate, CaCO3)
White Zircon
Zircon (Zirconium silicate, ZrSiO4)
Yellow Calcite (Banded Calcite)
Calcium Carbonate (CaCO3)
Honey Calcite
Calcium Carbonate (CaCO3)
Jasper
Microcrystalline Quartz (SiO2)
Rhodochrosite
Manganese Carbonate (MnCO3)
Jasper
Microcrystalline Quartz (SiO2)
Fluorite
Calcium Fluoride (CaF2)
Blue Calcite
Calcium Carbonate (CaCO3)
Jasper
Microcrystalline Quartz (SiO2)
Blue Chalcedony
Chalcedony (SiO2)
Mammoth or Mastodon Tooth Fossil
Mammuthus / Mammut tooth
Red Jasper (or Banded Jasper)
Silicon Dioxide (SiO2 with Hematite impurities)
Polychrome Jasper
Microcrystalline Quartz (SiO2)
Limonite (Yellow Ochre)
Limonite (an amorphous mixture of hydrated iron oxides, primarily FeO(OH)·nH2O)
Carnelian (Tumbled)
Silicon Dioxide (SiO2)
Limonite (with Goethite/Hematite glaze)
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
Amber with inclusion
Amber (Fossilized Tree Resin)
Banded Jasper
Silicon Dioxide with Iron Oxide impurities (SiO2)
Agate (Chert/Chalcedony)
Silicon Dioxide (SiO2)
Banded Agate
Cryptocrystalline Quartz (SiO2)
Geode half
Geode (often quartz/chalcedony based)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Gold Nugget
Native Gold (Au)
Agate (Chalcedony)
Silicon Dioxide (SiO2)