Almandine Garnet
Almandine (Fe3Al2Si3O12)
Category
Browse mineral like industrial smelting waste specimens identified by the Rock Identifier community.
Almandine Garnet
Almandine (Fe3Al2Si3O12)
Limonite (Bog Iron)
Limonite (Hydrated iron(III) oxide-hydroxide) - FeO(OH)·nH2O
Diamond
Carbon (C)
Agate
Agate (Silicon Dioxide - SiO2)
Black Tourmaline (Schorl)
Schorl (Sodium iron silicate hydroxide boron silicate); NaFe3Al6(BO3)3Si6O18(OH)4
Diamond Druzy (Crystalline Diamond)
Carbon (C)
Black Star Diopside
Diopside (CaMgSi2O6) with Magnetite inclusions
Opalite
Man-made opalescent glass (SiO2 + metal oxides)
Ruby (Corundum)
Al2O3 (Aluminium oxide with Chromium impurities)
Milky Quartz with Mineral Inclusions
Quartz (Silicon Dioxide, SiO2)
Quartz / River Cobble
Silicon Dioxide (SiO2)
Blue Quartz
Quartz (SiO2) with inclusions
Yellow Quartz (Citrine Quartz)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
Hematite
Hematite (Fe2O3)
Amethyst
Silicon dioxide (SiO2)
Efflorescence (on Clay Brick)
Crystalline salt deposits (typically Sodium Sulfate Na2SO4, Calcium Carbonate CaCO3, or Potassium Sulfate K2SO4)
River Quartz Pitting/Cobble
Silicon Dioxide (SiO2)
Quartz Sand Grain
Silicon Dioxide (SiO2)
Hypersthene
Hypersthene ((Mg,Fe)SiO₃)
Anthracite Coal
Anthracite (Carbon-rich metamorphic rock)
Chert (Iron-stained)
Chert (Silicon Dioxide, SiO2)
Chalcedony (specifically Common Opal or Agate variant)
Silicon Dioxide (SiO2)
Red Quartz
Silicon Dioxide (SiO2) with Hematite inclusions
Almandine Garnet & Tumbled Citrine Quartz
Fe3Al2(SiO4)3 (Garnet) and SiO2 (Quartz)
Diamond
Diamond (pure Carbon, C)
Red Sandstone
Arenite (Fe2O3 rich)
Desert Rose
Baryte or Gypsum variation (CaSO4·2H2O or BaSO4)
Schist
Mica Schist
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Red Sandstone
Arenite (Ferruginous Sandstone)
Oyster Shell (Aragonite/Calcite)
Calcium Carbonate (CaCO3)
Citrine Quartz
Silicon Dioxide (SiO2)
Garnet-Mica Schist
Garnetiferous Porphyroblastic Schist
Granite
Granite (phaneritic intrusive felsic igneous rock)
Diamond
Diamond (pure Carbon, C)
Clear Quartz (Herkimer Diamond variant)
Silicon Dioxide (SiO2)
Druzy Quartz (part of a Geode)
Silicon Dioxide (SiO2)
Jasper
Silicon dioxide (SiO2)
Agate (Slab)
Agate (Cryptocrystalline variety of Quartz, SiO2)
Conglomerate
Conglomerate (Clastic sedimentary rock)