Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Category
Igneous And Sedimentary
Browse igneous and sedimentary specimens identified by the Rock Identifier community.
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Mica Schist
Mica Schist (primarily Muscovite or Biotite)
metamorphic
Pyrite
Iron Disulfide (FeS2)
mineral
Quartz (Rosy/Clear variety)
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chalcedony
Cryptocrystalline Quartz (SiO2)
Mineral
Garnet-Bearing Gneiss
Almandine-Garnet Gneiss
metamorphic
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Granodiorite
Granodiorite (Intermediate intrusive igneous rock)
igneous
River Stone (likely Siltstone or fine-grained Basalt)
Clastic Sedimentary (Siltstone) or Mafic Igneous (Basalt)
sedimentary or igneous
Clear Quartz (or Rock Crystal)
Quartz (SiO₂)
Mineral
Green Moss Agate / Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz with Iron and Manganese inclusions
sedimentary
River Stone (Chalcedony/Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Jasper (specifically Bloodstone or Heliotrope variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Wonderstone (Banded Rhyolite)
Rhyolite (Silicon Dioxide with Iron Oxide impurities)
igneous
Quartz Pebble
Crystalline Silica (SiO2)
sedimentary
Granitic Sand
Detrital sediment (predominantly Quartz, Feldspar, and Mica)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Gneis
Gneiss (High-grade metamorphic rock)
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Quartz (Milky or Druzy Quartz)
Silicon Dioxide (SiO2)
mineral
Ferruginous Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2) with Iron Oxide inclusions (Fe2O3)
mineral
Granitic Gneiss
Gneiss (Metamorphic rock predominantly containing quartz, K-feldspar, and plagioclase)
metamorphic
Gneiss (likely Granitic Gneiss)
Gneiss
metamorphic
Hematite (Iron Ore)
Hematite (Fe2O3)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Granitic Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
White Agate (Chalcedony)
Agate (Silicon Dioxide - SiO2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Quartz (Clear/White)
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss
metamorphic
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Gneiss
Gneiss
metamorphic