Anthracite Coal
Anthracite
Category
Browse mineral like industrial smelting waste specimens identified by the Rock Identifier community.
Anthracite Coal
Anthracite
Bauxite
Bauxite (Al(OH)3, AlO(OH))
Mica Schist
Mica Schist (primarily Muscovite and Biotite KAl2(AlSi3O10)(OH)2)
Sodalite
Na8(Al6Si6O24)Cl2
Ruby (Corundum)
Aluminum oxide (Al2O3) with Chromium traces
Specular Hematite
Hematite (Iron Oxide, Fe2O3)
Diamond
Diamond (pure carbon C)
Chalcedony (Commonly known as Carnelian or Agate pebble)
Microcrystalline Quartz (SiO2)
Orange Calcite (Dogtooth/Cluster)
Calcium Carbonate (CaCO3)
Diamond
Native Carbon (C)
Agate
Cryptocrystalline Quartz (SiO2)
Quartz Vein Rock
Silicon Dioxide (SiO2)
Amethyst Quartz
SiO2 (Silicon Dioxide)
Yellow Calcite
Calcium Carbonate (CaCO3)
Blue Sapphire
Corundum (Al2O3)
Granite
Granite (Phaneritic Igneous Rock)
Granite (Phaneritic Igneous Rock)
Granite
Banded Iron Formation
Banded Iron Formation (BIF)
Amber (Simulated/Faturan Style)
Resin mix (Likely Phenolic/Celluloid if synthetic, Succinite if natural)
Bay Scallop Shell
Argopecten irradians (Biogenic Calcium Carbonate / CaCO3)
Gneiss (Metamorphosed Pebble)
Gneiss with Quartz/Feldspar banding
Rose Quartz
Silicon Dioxide (SiO2)
Pink Quartzite
Quartzite (primarily SiO2 with trace impurities of iron oxides)
Agate (or Chalcedony)
SiO2 (Silicon Dioxide) - a cryptocrystalline variety of quartz
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
Granite
Granite (Phaneritic Quartz-Feldspar rock)
Chert (Nodule)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Jet
Lignite (Anthracite-grade compact coal)
Fossil Shark Tooth
Carcharodon or Carcharias fossil (Vertebrate Fossil)
Chert (specifically Blue or Grey Chert/Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Laterite
Laterite (Iron and aluminum-rich residual rock)
Epidote
Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
Sandstone
Arenite (primarily SiO2)
Schist with Schorl (Black Tourmaline)
NaFe3Al6(BO3)3Si6O18(OH)4 (Schorl)
Dyed and Metallic Coated Agate Geode
Silicon Dioxide (SiO2) with titanium/gold vapor deposition coating
Blue Calcite
Calcite (Calcium Carbonate, CaCO3)
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Quartz (Iron-Stained or Milky Quartz)
Silicon Dioxide (SiO2)
Yellow Jasper
Jasper (Silicon Dioxide, SiO2)
Bismuth
Bismuth (Bi)
Red Quartzite
Quartzite (SiO2 with iron oxide impurities)
Diamond
Diamond (Carbon, C)