Pyrite in Matrix
Iron Sulfide (FeS2)
mineral
Category
Igneous, Sedimentary, And Metamorphic Mix
Browse igneous, sedimentary, and metamorphic mix specimens identified by the Rock Identifier community.
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Banded Gneiss
Gneiss
metamorphic
Quartz (Milky/Smoky variety on matrix)
Silicon Dioxide (SiO2)
mineral
Red Quartz (Hematoid Quartz)
Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Quartz
SiO2 (Silicon Dioxide)
mineral
Quartz
Silicon dioxide (SiO2)
mineral
Quartz
SiO2 (Silicon Dioxide)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Quartz Crystal Cluster / Quartzite
Silicon Dioxide (SiO2)
mineral
Quartz (Orange/Pink variety)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Faceted)
Silicon Dioxide (SiO2)
gemstone
Clear Quartz (Cut/Faceted Gemstone)
Silicon Dioxide (SiO2)
gemstone
Yellow Quartz (Citrine Quartz / Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Boulder
Silicon Dioxide (SiO2)
mineral
Mica (Muscovite or Biotite)
Sheet silicate mineral group (e.g., KAl2(AlSi3O10)(F,OH)2)
mineral
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Quartz with Matrix
Silicon Dioxide (SiO2)
mineral
Tumbled Quartz
Silicon Dioxide (SiO2)
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Common Opal
Hydrated amorphous silica (SiO2·nH2O)
mineral
Blue Quartz
Silicon Dioxide (SiO2) with inclusions
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Limonite pseudomorph after pyrite
Goethite / Limonite pseudomorph after Pyrite (Fe3+O(OH) replacing FeS2)
mineral
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Bumblebee Jasper
Fibrous Calcite and Orpiment/Realgar/Pyrite mix
gemstone
Magnetite (Lodestone)
Magnetite (Fe3O4)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Banded gneiss (likely garnet-biotite or quartz-feldspar gneiss)
Gneiss; predominantly quartz (SiO₂), feldspar, and dark biotite/amphibole
metamorphic
Pyrite
Iron sulfide (FeS2)
mineral
Fluorescent Calcite
Calcite (CaCO3)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
gemstone
Quartz (Raw Specimen)
Silicon Dioxide (SiO2)
mineral