Pyrite in Matrix (Gold-colored Chalcopyrite or Pyrite)
Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)
mineral
Category
Mineral With Artificial Coating
Browse mineral with artificial coating specimens identified by the Rock Identifier community.
Learn about Mineral With Artificial Coating in the encyclopedia
View all →
Malachite
Copper carbonate hydroxide Cu2CO3(OH)2
mineral
Malachite
Malachite, Cu2CO3(OH)2
mineral
Selenite (Satin Spar)
Gypsum (CaSO4·2H2O)
mineral
Satin Spar (Satin Spar Selenite)
Gypsum (CaSO4·2H2O)
mineral
Basalt-Amugydule (Amygdaloidal Basalt)
Aphanitic Mafic Igneous Rock with Vesicle Infillings
igneous
Agate
SiO2
mineral
Agate
SiO2
mineral
Emerald in Host Rock
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Schist
Schist (Crystalline metamorphic rock)
metamorphic
Agate
SiO2
mineral
Rhodonite
Rhodonite (Mn,Fe,Mg,Ca)SiO3
mineral
Vesicular Basalt (Lava Rock)
Vesicular Basalt
igneous
Sodalite
Sodalite, Na8(Al6Si6O24)Cl2
mineral
Agate
Chalcedony SiO2
mineral
Pink Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate - (Mn,Fe,Mg,Ca)SiO3)
mineral
Chrysocolla in Matrix
Hydrated copper silicates (Cu2-xAlx(H2-xSi2O5)(OH)4·n(H2O))
mineral
Rhodonite
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Peridot
Olivine (Mg, Fe)2SiO4
Mineral
Pink Feldspar
Orthoclase (KAlSi3O8)
igneous
Note: Item is not a geological specimen
n/a
none
Citrine
SiO2 (Silicon Dioxide)
mineral
Emerald
Beryl (Be3Al2(SiO3)6) with chromium/vanadium impurities
mineral
Biotite Mica
Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)
mineral
Pyrite (Fool's Gold) Cube
Iron Sulfide (FeS2)
mineral
Peridot (Olivine)
Olivine ((Mg, Fe)2SiO4)
mineral
Granite Pebble
Granite (Felsic intrusive igneous rock)
igneous
Sandstone
Arenite (SiO2 primarily)
sedimentary
Blue Lace Agate (or similar Chalcedony)
SiO2 (Silicon Dioxide)
mineral
Pearl
Calcium carbonate (CaCO3) + organic conchiolin
gemstone
Grey Basalt or Andesite with Veining
Intermediate to Mafic Extrusive Igneous Rock with Quartz/Calcite Veins
igneous
Tree Agate
SiO2
mineral
Yellow Chalcedony / Carnelian
Silicon Dioxide (SiO2)
mineral
Green Quartz (Aventurine or Prase)
Silicon Dioxide (SiO2) with inclusions
mineral
Blue Zircon
Zircon (Zirconium Silicate), ZrSiO4
gemstone
Ferruginous Sandstone (River Pebble)
Clastic Sedimentary Rock (Iron-rich)
sedimentary
Amber (Copal)
Fossilized Tree Resin
mineraloid
Schist
Mica Schist
metamorphic
Schist
Mica Schist
metamorphic
Note: No specimen visible
N/A
Herkimer Diamond
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz Geode
Quartz (Silicon Dioxide, SiO2) in a Geode
sedimentary