Chrysocolla Cuprite
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) and Cu2O (Cuprite)
mineral composite
Category
Mineral With Artificial Coating
Browse mineral with artificial coating specimens identified by the Rock Identifier community.
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Rhodonite
Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3
mineral
Labradorite (Raw)
(Ca, Na)(Al, Si)4O8
mineral
Black Opal
Hydrated Amorphous Silica (SiO2 "n" H2O)
gemstone
Erythrite on Matrix
Cobalt Bloom (Co3(AsO4)2·8H2O)
mineral
Satin Spar Selenite
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Labradorite
(Ca, Na)(Al, Si)4O8
mineral
Native Copper in Basalt
Cuprum (with Host Basalt)
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Gypsum (Alabaster variety)
Calcium sulfate dihydrate (CaSO4·2H2O)
mineral
Chert (Banded)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz vein in Host Rock
Crystalline Silicon Dioxide (SiO2) in Lithic Matrix
metamorphic
Botryoidal Quartz or Chalcedony
Silicon Dioxide (SiO2)
mineral
Emerald in Matrix (Quartz/Calcite)
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Amazonite
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Pink Thulite (Zoisite)
Ca2Al3(SiO4)3(OH) - Manganese-bearing Zoisite
mineral
Opal
Hydrated Amorphous Silica (SiO2·nH2O)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
sedimentary
Granite
Granite
igneous
Grey River Stone (Gneiss/Schist mix)
Foliated Metamorphic Rock (variable mineral formula)
metamorphic
Vesicular Basalt with Xenocrysts
Mafic Igneous Plutonic/Extrusive Complex
igneous
Orthoclase Feldspar with Quartz
Orthoclase (KAlSi3O8)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Citrine
Silicon Dioxide (SiO2)
gemstone
Chert (variously known as Flint)
Microcrystalline quartz (SiO2)
sedimentary
Greenstone / River Jadeite pebble
Metavolcanic rock / Chlorite or Actinolite-rich schist
metamorphic
Ironstone Concretion
Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)
sedimentary
Quartz in Limonite-rich Matrix
Silicon Dioxide (SiO2) with Goethite/Limonite FeO(OH)·nH2O
Mineral in Sedimentary/Secondary host
Fuchsite
Cr-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Tumbled Stone Collection (Fluorite, Sodalite, Moss Agate, Amethyst/Charoite, and Grey Agate)
Silica (SiO2) and Calcium Fluoride (CaF2) based minerals
mineral
Obsidian
Obsidian (Volcanic Glass)
igneous
Breciated Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Green Jasper
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Sandstone Cobble with Iron Staining
Arenite with Limonite/Hematite staining
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Vesicular Basalt (or Scoria)
Vesicular Basalt
igneous
Sandstone (Ferruginous)
Clastic sedimentary rock (SiO2 with Fe2O3)
sedimentary
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Granite River Pebble
Granite
igneous
Obsidian
Volcanic glass (SiO2 - Silicon Dioxide with impurities)
Igneous
Blue Aventurine
Quartzite with inclusions of Dumortierite (SiO2 + Al7(BO3)(SiO4)3O3)
metamorphic