Magnetic Sand Grain / Magnetite Pellet
Magnetite (Fe3O4)
Category
Browse metamorphic and sedimentary specimens identified by the Rock Identifier community.
Magnetic Sand Grain / Magnetite Pellet
Magnetite (Fe3O4)
Note: Image shows a biological specimen (Rat), not a rock. Representative geological equivalent: Galena (due to lead-grey colors in fur).
Galena (PbS)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Apatite
Fluorapatite (Ca5(PO4)3F)
Garnet Schist
Almandine Garnet in Mica Schist (Fe3Al2(SiO4)3)
Slate
Foliated Metamorphic Rock (Mainly composed of Quartz, Illite, Chlorite)
Garnet in Matrix
Almandine or Spessartine Garnet in Quartz/Schist Matrix (X3Al2(SiO4)3)
Pyrite (on the right) and Magnetite or Hematite (on the left)
Iron Sulfide (FeS2) and Iron Oxide (Fe3O4 or Fe2O3)
Ruby in Kyanite
Corundum in Disthene (Al2SiO5 + Al2O3)
Kyanite
Kyanite (Al2SiO5)
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
Foliated Metamorphic Rock (likely Gneiss or Schist)
Gneissic Metamorphic Rock
Mixed Mineral Collection
Multi-mineral Assemblage (Quartz, Jasper, Obsidian, Pyrite, etc.)
Yellow Calcite
Calcium Carbonate (CaCO3)
Muscovite Schist with Quartz
Mica Schist (KAl2(AlSi3O10)(OH)2)
Kyanite
Kyanite (Al2SiO5)
Rhodonite (in matrix)
Rhodonite (Mn,Fe,Mg,Ca)SiO3
Garnet in Matrix (Schist or Quartz)
Almandine Garnet, Fe3Al2(SiO4)3
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Quartz (Clear/Milky)
Silicon Dioxide (SiO2)
Gneiss
Metamorphic Gneiss
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Calcite
Calcium Carbonate (CaCO3)
Specular Hematite with Quartz and Limonite
Hematite (Fe2O3) with Quartz (SiO2) and Limonite (FeO(OH)·nH2O)
Orange Calcite
Calcium Carbonate (CaCO3)
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
Pyrite
Iron Disulfide (FeS2)
Gneissic Schist
Gneiss-schist (Metamorphic rock)
Yellow Calcite
Calcium Carbonate (CaCO3)
Gneiss
Foliated Metamorphic Rock
Banded Slate
Slate (Metamorphosed Siltstone/Mudstone)
Gneiss (Metamorphic Pebble)
Gneissic Metamorphic Rock
River Pebble (Quartzite)
Quartzite (SiO2)
River Cobble (Gneiss/Schist mix)
Foliated Metamorphic Rock (Gneissic/Schistose)
Painted River Rock
Painted Quartzite or Smooth Siltstone
Quartzite Pebble
Metamorphic Quartz (SiO2)
Pyrite in Slate
Iron Disulfide (FeS2) in Low-grade Metamorphic Rock
Slate
Foliated Metamorphic Rock
Green Kyanite
Kyanite (Al2SiO5)
Magnetite with Quartz
Magnetite (Fe3O4)
Gneiss
Foliated Metamorphic Gneiss
Gneiss
Gneissic Metamorphic Rock