Gold Nugget
Native Gold (Au)
mineral
Category
Mineral (Synthetic Paper And Ink Polymorph)
Browse mineral (synthetic paper and ink polymorph) specimens identified by the Rock Identifier community.
Amazonite
Amazonite (KAlSi3O8)
mineral
Opal
Hydrated Amorphous Silica (SiO2·nH2O)
mineral
Herkimer Diamond (Quartz)
Silicon Dioxide (SiO2)
mineral
Amazonite
Potassium Feldspar (Microcline), K(AlSi3O8)
mineral
Paraiba Tourmaline
Elbaite Tourmaline (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4) - Copper-bearing
mineral
![Pyromorphite on Epidote (Pyromorphite [Pb5(PO4)3Cl] and Epidote [Ca2(Al2,Fe3+)(SiO4)3(OH)]) — mineral](https://media.rockidentification.com/3cbdc467-e5c5-447f-afde-c958e111a578-thumbnail.jpg)
Pyromorphite on Epidote
Pyromorphite [Pb5(PO4)3Cl] and Epidote [Ca2(Al2,Fe3+)(SiO4)3(OH)]
mineral
Quartz Geode
Silicon Dioxide (SiO2) within a geode
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Limonite and Goethite on Gossan
FeO(OH)·nH2O
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Goethite
Goethite (FeO(OH))
mineral
Rhodonite
Manganese silicate (MnSiO3)
mineral
Chrysocolla
Chrysocolla; (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Satin Spar (often sold as Selenite)
Gypsum (CaSO4·2H2O)
mineral
Limonite (Iron Ore)
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
mineral
Azurite and Malachite on Matrix
Cu3(CO3)2(OH)2 (Azurite) and Cu2CO3(OH)2 (Malachite)
mineral
Satin Spar Selenite
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Sandstone
Arenite (SiO2 primarily)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Diorite
Diorite (plutonic igneous rock)
igneous
Fluorite (tumbled pebble)
Calcium Fluoride (CaF2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Peacock Ore
Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with iridescent tarnish
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Halite
Halite (NaCl)
mineral
Note: No specimen visible
N/A
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Greenstone / Glauconitic Siltstone
Metabasalt or Glauconite-rich Sedimentary Rock
metamorphic or sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Brachiopod Fossil
Phylum Brachiopoda (likely Order Rhynchonellida or Spiriferida)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pink Feldspar (Orthoclase)
Orthoclase Feldspar (KAlSi3O8)
mineral
Chrysocolla
Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O)
mineral
Biotite Mica
Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)
mineral
Amazonite
Microcline (KAlSi3O8) with Pb impurities
mineral
Alexandrite
Chrysoberyl (BeAl2O4 with Chromium impurities)
mineral