Serpentinite
Serpentinite (Hydrated magnesium iron phyllosilicate)
Category
Browse mineral like byproduct specimens identified by the Rock Identifier community.
Serpentinite
Serpentinite (Hydrated magnesium iron phyllosilicate)
Fluorite
Calcium Fluoride (CaF2)
Halite
Halite (Sodium Chloride, NaCl)
Diorite
Diorite (Intermediate intrusive igneous rock)
Obsidian
Volcanic Glass (Amorphous Silica)
Pegmatite
Granitic Pegmatite
Crinoid Stem Fossil
Crinoidea (Class) / Calcite (CaCO3)
Sandstone (Green/Yellow Siltstone variant)
Arenite or Siltstone (primarily SiO2 with mineral staining)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Amygdaloidal Basalt
Basalt (Igneous Volcanic Rock with secondary mineral infilling)
Petrified Wood
Silicified wood (primarily quartz, SiO2)
Sandstone (likely Iron-rich or Arkosic)
Arenite (SiO2 with FeO(OH) or Fe2O3 staining)
Quartz (Chert/Chalcedony Variety)
Silicon Dioxide (SiO2)
Ferruginous Quartz
Quartz (Silicon Dioxide, SiO2) with Iron Oxide Inclusions
Greenschist (Greenstone)
Chlorite Schist / Greenschist Facies Rock
Diorite
Diorite
Gossan (Iron Cap)
Limonitic Gossan (FeO(OH)·nH2O)
Glaucophane Schist (Blueschist)
Blueschist (Glaucophane-bearing schist)
Mica Schist
Schist (Crystalline metamorphic rock)
Petrified Wood
Silicified Wood (SiO2)
Yellow Apatite Sphere (Polished)
Fluorapatite / Ca5(PO4)3F
Granodiorite (or Granite) Pebble
Phaneritic Felsic Igneous Pebble
Wonderstone (Banded Rhyolite)
Rhyolite (Silicon Dioxide with Iron Oxide impurities)
Mica Schist
Mica Schist (KAl2(AlSi3O10)(OH)2)
Green Fluorite
Calcium Fluoride (CaF2)
Red Sandstone
Arenite (Ferruginous Sandstone)
Sandstone (River Rock)
Arenite (SiO2 based sedimentary rock)
Gneiss (Granulite / Foliated Metamorphic Rock)
Gneiss
Sandstone
Arenite
Quartz pebble
Silicon dioxide (SiO2)
Stromatolite
Laminated biogenic sedimentary structure (Cyanobacteria)
Sunstone (Feldspar variety)
Oligoclase or Andesine (Na,Ca)(Al,Si)4O8
Quartz River Cobble
Silicon Dioxide (SiO2)
Sapphire
Corundum (Al2O3)
Milky Quartz Pebble (Iron-Stained)
Silicon Dioxide (SiO2)
Fluorite Octahedron
Fluorite (Calcium Fluoride, CaF2)
Moss Agate with Quartz Druzy
Chalcedony with inclusions (SiO2)
Red Sandstone
Quartz Arenite (with Iron Oxide)
Red Sandstone
Arenite (primarily composed of SiO2 with Fe2O3 cement)
Basalt with Jasper Vein
Extrusive Igneous Rock with Quartz/Chalcedony Vein
Sandstone (with potential trace fossils)
Clastic sedimentary rock (primarily SiO2)
Moss Agate
Silicon Dioxide (SiO2) with Chlorite/Hornblende inclusions