Garnet (Almandine or Spessartine likely)
Garnet Group Minerals (e.g., Almandine Fe3Al2(SiO4)3, Pyrope Mg3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3)
Mineral
Category
Sedimentary Or Metamorphic Derived
Browse sedimentary or metamorphic derived specimens identified by the Rock Identifier community.
Green Aventurine
Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
metamorphic
Kyanite (in Schist Matrix)
Kyanite (Al2SiO5)
metamorphic
Garnet (Almandine variety)
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Garnet in Schist (Polished Tower)
Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist
metamorphic
Gneiss (specifically Granitic Gneiss)
Gneissic Metamorphic Rock
metamorphic
Biotite Mica
K(Mg, Fe)3AlSi3O10(F, OH)2
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Pink Garnet (likely Almandine or Rhodolite)
Garnet Group (Fe3Al2(SiO4)3 to Mg3Al2(SiO4)3)
mineral
Anthracite Coal
Anthracite (Carbon-rich Sedimentary-to-Metamorphic Rock)
metamorphic
Quartz / Clear Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Quartz (Milky or White Quartz)
Silicon Dioxide (SiO2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Milky or Common Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Orange Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Specular Hematite
Hematite (Fe2O3)
mineral
Red Garnet
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Common or Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Optical Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
mineral
Gold Nugget
Native Gold (Au)
mineral
Quartz (Milky/Crystalline)
Quartz (Silicon Dioxide, SiO2)
mineral
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Clear Quartz Fragment
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Magnetite / Iron Ore
Magnetite (Fe3O4)
mineral
Red Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Drill Core Sample
Cylindrical Rock Core (Specific mineralogy varies by extraction site)
Metamorphic (Likely Gneiss or Schist based on texture)
Unakite
Epidote-Feldspar rock
Metamorphic Rock
Quartzite
Quartzite (primarily SiO2)
metamorphic