Fluorite (Blue)
Calcium Fluoride (CaF2)
Category
Browse mineral (synthetic) specimens identified by the Rock Identifier community.
Fluorite (Blue)
Calcium Fluoride (CaF2)
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
Milky Quartz Pebble with Matrix
Quartz (Silicon Dioxide, SiO2)
Limonite (Hydrated Iron Oxide / Bog Iron)
FeO(OH)·nH2O
Tumbled Stone Collection (Fluorite, Sodalite, Moss Agate, Amethyst/Charoite, and Grey Agate)
Silica (SiO2) and Calcium Fluoride (CaF2) based minerals
Quartz with Arsenopyrite
Silicon Dioxide (SiO2) with Iron Arsenic Sulfide (FeAsS)
Lapis Lazuli (polished cabochon/sphere)
Na8[Al6Si6O24]Sn with accessory minerals (Pyrite, Calcite)
Quartz and Mixed Sedimentary Rocks
Silicon Dioxide (SiO2) mixed with various clastic sedimentary lithologies
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Quartz Pebble
Silicon Dioxide (SiO2)
Bauxite
Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Ruby in Kyanite
Corundum in Disthene (Al2SiO5 + Al2O3)
Fluorite (Green)
Calcium Fluoride (CaF2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Limonite (Iron Ore)
Hydrous ferric oxides (FeO(OH)·nH2O)
Yellow Ochre / Limonite
Limonite (FeO(OH)·nH2O)
Mahogany Obsidian
Obsidian with Hematite inclusions (SiO2 + Fe2O3)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz pebble
Silicon dioxide (SiO2)
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Limonite (Ironstone Concretion)
Limonite (Hydrated iron(III) oxide-hydroxide, mixtures of FeO(OH)·nH2O)
Quartz pebble
Silicon Dioxide (SiO2)
Quartz (Small Pebble)
Silicon Dioxide (SiO2)
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Quartz (Grain)
Silicon Dioxide (SiO2)
Conglomerate
Conglomerate
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Granite
Phaneritic plutonic rock (SiO2 rich)
Gravel or Crushed Stone
Fragmented Aggregate Stone
Granite or Pegmatite with Quartz and Feldspar
Granitoid
Diorite
Phaneritic intermediate plutonic rock
Granodiorite
Granodiorite (containing Plagioclase, Quartz, and K-feldspar)
Gneiss
Gneiss (High-grade Metamorphic Rock)
Quartz Geode
Silicon Dioxide (SiO2)
Red Sandstone
Arenite (primarily SiO2 with Fe2O3)
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
Turquoise
CuAl6(PO4)4(OH)8·4H2O
Sandstone with Iron Oxide Staining
Arenite with Limonite/Hematite alteration
Turquoise
Hydrated phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O