Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Category
Igneous Or Mineral
Browse igneous or mineral specimens identified by the Rock Identifier community.
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Epidote
Calcium aluminum iron silicate (Ca2(Al, Fe)3(SiO4)3(OH))
mineral
Quartz (Orange/Pink variety)
Silicon Dioxide (SiO2)
mineral
Basalt with Calcite Veins
Extrusive Igneous Rock
igneous
Granite
Intrusive Igneous Rock
igneous
Basalt with Olivine and Scoria
Extrusive Igneous Rock
igneous
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
mineral
Epidote
Epidote (Ca2(Al, Fe)3(SiO4)3(OH))
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Small rounded mineral/rock fragment
Indeterminate; possibly quartz-rich stone or feldspar
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Labradorite
Labradorite ((Ca,Na)(Al,Si)4O8)
mineral
Pink Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Granite
Felsic intrusive igneous rock
igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz Druze (Crystalline Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Granite Pebble
Granite
igneous
Potassium Feldspar (Orthoclase / Microcline)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Granite
Intrusive Igneous Rock
igneous
Porphyry (likely Porphyritic Andesite or Basalt)
Porphyritic Igneous Rock
igneous
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Banded Metamorphic Rock
Gneiss or Schist
metamorphic
Pink Granite (Unakite-bearing or Epidote-bearing Granite)
Plutonic Igneous Rock (Granite)
igneous
Feldspar (Orthoclase)
Orthoclase Feldspar (KAlSi3O8)
mineral
Granite
Intrusive Igneous Rock
igneous
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(F,OH)2)
mineral
Granite
Intrusive Igneous Rock
igneous
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(F,OH)2)
mineral
Granite / Igneous Rock Specimen
Phaneritic Igneous Rock
igneous
Granite
Granite
igneous
Fluorite
Calcium Fluoride (CaF2)
mineral
Granite
Intrusive igneous rock
igneous
Small tumbled pebble (likely quartz or feldspar)
Indeterminate; probable quartz (SiO₂) or feldspar
mineral
Granite fragment
Granite (Felsic Plutonic Rock)
igneous
Diorite (possibly Orbicular Diorite or Porphyritic Diorite)
Intermediate Phaneritic Igneous Rock
igneous
Quartz (Tumbled)
SiO2 (Silicon Dioxide)
mineral
Quartz (Citrine or Iron-Stained)
SiO2
mineral
Granite
Felsic intrusive igneous rock
igneous