Sandstone
Arenite (SiO2 based)
Category
Browse sedimentary (secondary mineral) within igneous specimens identified by the Rock Identifier community.
Sandstone
Arenite (SiO2 based)
Quartz Pebble
Silicon Dioxide (SiO2)
Turquoise
Hydrated copper aluminum phosphate, CuAl6(PO4)4(OH)8·4H2O
Chrysocolla
Chrysocolla (Cu2–xAlx(H2–xSi2O5)(OH)4·nH2O)
Chalcanthite
Copper(II) sulfate pentahydrate (CuSO4·5H2O)
Bornite
Bornite (Cu5FeS4)
Bornite
Bornite (Cu5FeS4)
Bornite
Bornite (Cu5FeS4)
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
Pyrite
Iron Disulfide (FeS2)
Pyrite
Iron Pyrite (FeS2)
Pyrite
Iron Sulfide (FeS2)
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
Limonite-pseudomorph after Pyrite (Prophecy Stone)
Goethite and Limonite secondary minerals (FeO(OH)·nH2O) replacing Pyrite (FeS2)
K-Feldspar (Microcline / Orthoclase)
Potassium Feldspar (KAlSi3O8)
Botryoidal Pyrite
Iron Sulfide (FeS2)
Jasper with Hematite (Red Jasper)
Silicon Dioxide with Iron Oxide (SiO2 and Fe2O3)
Sandstone (with vugs)
Arenite / Sedimentary Sandstone
Quartz Druze
Silicon Dioxide (SiO2)
Bloodstone
Chalcedony (cryptocrystalline quartz)
Ironstone Nodules (Iron Concretion)
Siderite or Hematite Concretion
Banded Agate (variety of Chalcedony)
Agate (SiO2)
Granite
Granite (Phaneritic Igneous Rock)
Chrysocolla Cuprite
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) and Cu2O (Cuprite)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Amethyst
Amethyst (Silicon Dioxide, SiO2)
Jasper Pebble
SiO2 (Microcrystalline Quartz)
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite/Goethite inclusions
Eudialyte
Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Graphic Granite
Pegmatitic Granite
Tumbled Agate Pebble
Silicon Dioxide (SiO2)
Jasper (specifically Bloodstone/Heliotrope or Dark Green Jasper)
Cryptocrystalline Quartz (SiO2) with inclusions
Magnetite
Magnetite (Fe3O4)
Opal
Hydrated amorphous silica (SiO2·nH2O)
Granite
Phaneritic Plutonic Felsic Rock (SiO2, KAlSi3O8, NaAlSi3O8, CaAl2Si2O8)
Ironstone pebble
Ironstone (Ferruginous Sedimentary Rock)
Red Jasper
Jasper (Silicon Dioxide) - SiO2
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
Yellow Chalcedony (Quartz Pebble)
Silicon Dioxide (SiO2)
Sandstone (Ferruginous)
Arenite (Fe2O3 staining)