Mudstone
Lutylite (group of fine-grained sedimentary rocks)
Category
Browse mineral like industrial smelting waste specimens identified by the Rock Identifier community.
Mudstone
Lutylite (group of fine-grained sedimentary rocks)
White Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
Pumice
Vesicular Rhyolite or Dacite
Rough Emerald (Beryl)
Emerald (Be3Al2(SiO3)6 with Cr/V impurities)
Chert (Yellow Jasper variant)
Microcrystalline Quartz (SiO2)
Milky Quartz (Water-worn Pebble)
Quartz (Silicon Dioxide) - SiO2
Anthracite Coal
Anthracite
Chert (varieties: Flint or Chalcedony)
Microcrystalline silica (SiO2)
Chert (Arrowhead variety)
Chert (SiO2)
Diamond
Carbon (C)
Amethyst
SiO2 (Silicon Dioxide with iron impurities)
Cubic Zirconia
Zirconium Dioxide (ZrO2)
Diamond
Carbon (C), Native Element
Sodalite
Sodalite - Na8(Al6Si6O24)Cl2
Diamond
Carbon (C)
Diamond (or Diamond Simulant)
Carbon (C) - Native Element
Yellow Quartz (Citrine Quartz)
Silicon Dioxide (SiO2)
White Topaz
Topaz [Al2SiO4(F,OH)2]
Green Fluorite
Fluorite (Calcium Fluoride - CaF2)
Rough Sapphire (Corundum)
Corundum (Al2O3)
Diamond
Native Carbon (C)
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
Diamond (as set in a gold ring)
Carbon (C)
Blue Calcite
Calcium Carbonate (CaCO3)
Schorl (Black Tourmaline)
Sodium Iron Aluminum Borosilicate (NaFe3Al6(BO3)3Si6O18(OH)4)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Ruby (Pinkish-Red)
Corundum (Al2O3 with Chromium trace)
Diamond
Carbon (C)
Magnetite
Magnetite (Fe3O4)
Pegmatite (likely Granitic Pegmatite)
Pegmatite (a coarse-grained igneous rock, often with granitic composition)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Chert (often called Flint or Jasper)
Silicon Dioxide (SiO2)
Schist
Schist
Fuchsite
K(Al,Cr)2(AlSi3O10)(OH)2 (Chromium-rich Muscovite)
Sandstone
Arenite (SiO2 based typically)
Anthracite Coal
Anthracite (Highly Metamorphosed Coal)
Schist (Chlorite or Mica-rich)
Chlorite Schist
Chert (Quartz Pebble)
Silicon Dioxide (SiO2)
Black Sand (Magnetite Sand)
Magnetite (Fe3O4)
Peridot
Olivine (specific variety: gem-quality forsterite), (Mg,Fe)2SiO4
Muscovite Mica
Muscovite (Potassium Aluminum Silicate) - KAl2(AlSi3O10)(F,OH)2