Serpentinite
Serpentinite (composed primarily of Serpentine minerals: Mg3Si2O5(OH)4)
Category
Browse mineral (metal) specimens identified by the Rock Identifier community.
Serpentinite
Serpentinite (composed primarily of Serpentine minerals: Mg3Si2O5(OH)4)
Titanium Aura Quartz (Bismuth-coated Druzy)
Silicon Dioxide (SiO2) with Titanium/Metal vapor coating
Banded Flint (Polished Stripe Flint)
Silicon Dioxide (SiO2) - variety of Chert
Pumice
Pumicite (Amorphous volcanic glass)
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lithium-bearing Mica)
Granite
Plutonic Igneous Rock (composed primarily of Quartz, Feldspar, and Mica)
Quartzite with Iron Hydroxide Staining
Quartzite (primarily SiO2) with Limonite/Goethite staining
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Quartzite
Quartzite (primarily SiO2)
Amethyst
Amethyst (Silicon Dioxide, SiO2)
Goldstone
Avventurina (Cu + SiO2 glass)
Native Gold Nugget
Native Gold (Au)
Pearl (nacre)
Calcium Carbonate (mostly CaCO3 as Aragonite) and Conchiolin
Slag
Ferrous Slag (Siliceous industrial waste)
Ferruginous Breccia
Breccia with Iron-rich (Hematite/Goethite) Matrix
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
Black Onyx
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Black Jasper
Jasper (Silicon Dioxide, SiO2)
Chert Nodule
Microcrystalline Silica (SiO2)
Quartzite Pebble
Quartzite (SiO2)
Serpentinite
Serpentinite (complex silicate of magnesium, (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)
Onyx
Chalcedony (SiO2) with parallel banding
Chert (specifically Flint)
Microcrystalline Quartz (SiO2)
Riverstone Quartzite (Iron-stained)
Quartzite (primarily SiO2 with Limonite/Goethite staining)
Chert (with possible fossils)
Microcrystalline quartz (SiO2)
White Quartzite
Quartzite (primarily SiO2)
Goldstone (Red)
Aventurine Glass
Gold and Silver (in jewelry form)
Gold (Au) and Silver (Ag)
Limestone
Calcium Carbonate (CaCO3)
Serpentinite
Serpentinite (complex of lizardite, chrysotile, and antigorite: (Mg,Fe)3Si2O5(OH)4)
Banded Black Onyx (Chalcedony)
Silicon Dioxide (SiO₂)
Amygdaloidal Basalt
Amygdaloidal Basalt (containing secondary minerals like Quartz, Zeolites, or Calcite)
Aquamarine
Beryllium aluminum silicate (Be3Al2Si6O18)
Ferrous Slag
Iron/Steel Slag (Complex Calcium-Alumino-Silicates)
Blue Goldstone
Auraventurine (Synthetic glass with cobalt and copper inclusions)
Opalite
Man-made Glass (SiO2 + additives)
Serpentinite
Serpentinite (composed primarily of minerals in the Serpentine group)
Naga Silver-Inlaid Ebony and Bone/Horn Beads
Diospyros (Ebony) or Keratin (Horn) with Silver/White-Metal Inlay
Almandine Garnet
Iron aluminum silicate (Fe3Al2(SiO4)3)
Quartz (Milky or Iron-Stained)
Silicon Dioxide (SiO2)
Milk Quartz (Vein Quartz)
Quartz (Silicon Dioxide, SiO2)