Granodiorite
Granodiorite (Intermediate intrusive igneous rock)
Category
Browse mineral like industrial smelting waste specimens identified by the Rock Identifier community.
Granodiorite
Granodiorite (Intermediate intrusive igneous rock)
Pink Granite (Potassium-rich Granite)
Phaneritic Felsic Igneous Rock (primarily SiO2, Al2O3, K2O)
Sandstone (Ferruginous)
Arenite (Fe-rich)
Blue Apatite
Apatite-(CaF), Ca5(PO4)3F
Flower Agate
Chalcedony (cryptocrystalline Quartz) with Spherulite inclusions; SiO2
Milky Quartz with Country Rock contact
Silicon Dioxide (SiO2) in contact with Metamorphic/Igneous rock
Dendritic Agate
Silicon Dioxide (SiO2) with Manganese/Iron Oxide inclusions
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Quartz (Small Grains)
Silicon Dioxide (SiO2)
Banded Iron Formation (BIF) with Quartz
Banded Iron Formation, often composed of alternating layers of hematite (Fe2O3) or magnetite (Fe3O4) and chert (microcrystalline quartz, SiO2)
Gneiss
Gneiss
Basalt-Amugydule (Amygdaloidal Basalt)
Aphanitic Mafic Igneous Rock with Vesicle Infillings
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(F,OH)2)
Limonite (Ironstone)
Limonite (Hydrated iron(III) oxide-hydroxide, FeO(OH)·nH2O)
Quartz Druzy Geode
Silicon Dioxide (SiO2) - Crystalline Variety
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
Fluorite
Calcium Fluoride (CaF2)
Black Obsidian
Volcanic Glass (Primary composition: SiO2 - Silicon Dioxide)
Lepidolite with Quartz
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
Diorite
Diorite
Banded Gneiss
Gneiss (Metamorphic Rock)
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
Granitic Gneiss
Gneiss (Metamorphic rock predominantly containing quartz, K-feldspar, and plagioclase)
Amber
Succinite (a common variety of fossilized resin)
Ironstone Concretion
Limonitic/Hematitic Concretion
Dendritic Limestone
Calcite with Manganese Oxide (Manganese Dendrites)
Sandstone
Sandstone (principally SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Dendritic Agate (or Dendritic Opal)
SiO2 (for Agate), SiO2·nH2O (for Opal)
Yellow Aventurine
Silicon Dioxide (Quartz with inclusions of Mica or Pyrite), SiO2
Sandstone (lithic wacke/conglomerate mix)
Clastic Sedimentary Rock (SiO2 with lithic fragments)
Purple Lepidolite with Quartz
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
Yellow Ochre / Limonite
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
Chert (variations include Flint/Chalcedony)
Chert (SiO2 - Silicon Dioxide)
Limonite (Ironstone)
Limonite (mixture of hydrated iron oxides, primarily Goethite α-FeO(OH))
Smoky Quartz
Silicon Dioxide (SiO2)
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite or Goethite inclusions
Quartz with Iron Stains
Silicon Dioxide (SiO2) with FeOx inclusions
Mica Schist
Mica Schist (predominantly Muscovite or Biotite sheet silicates)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily Quartz with Fe2O3 staining)