Milky Quartz
Silicon dioxide (SiO2)
mineral
Sandstone (likely Quartzose Sandstone)
Arenite (SiO2 principal composition)
sedimentary
Schist
Mica Schist (Medium-grade metamorphic rock)
metamorphic
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
sedimentary
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Ferruginous Sandstone
Clastic Sedimentary Rock (Iron-rich)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite (Fe-rich)
sedimentary
Greenstone
Greenschist / Greenstone (contains epidote, chlorite, and actinolite)
metamorphic
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within metamorphic/igneous matrix
igneous/metamorphic
Jasper with Epidote
Silicon Dioxide (SiO2) with Calcium Aluminum Iron Sorosilicate [Ca2Al2Fe3+Si3O12(OH)]
sedimentary/metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Ironstone with Limonite/Goethite coating
Ferruginous Sedimentary Rock (contains Limonite FeO(OH)·nH2O)
sedimentary
Basalt
Basalt
igneous
Native Copper in Basalt
Cuprum (with Host Basalt)
igneous
Mica Schist
Mica Schist (primarily Muscovite or Biotite sheet silicates)
metamorphic
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions (Hematite/Goethite)
mineral
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
mineral
Chert (Basanite / Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Coquina
Bioclastic Limestone (CaCO3)
sedimentary
Milky Quartz with Mica inclusions
Quartz (Silicon Dioxide, SiO2)
mineral
Chert (with Quartz Veining)
Microcrystalline silicon dioxide (SiO2)
sedimentary
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Quartz Vein / Milky Quartz
Silicon Dioxide (SiO2)
mineral
Schist (specifically Chlorite/Greenschist)
Chlorite Schist
metamorphic
Sandstone with Quartz Veining
Clastic sedimentary rock (SiO2 dominated)
sedimentary
Gneiss
Gneiss
metamorphic
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Schist
Mica Schist
metamorphic
Ferruginous Sandstone
Clastic Sedimentary Rock (Iron-rich)
sedimentary
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartz Geode (partially formed)
Silicon Dioxide (SiO2)
mineral
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Basalt
Extrusive mafic igneous rock
igneous
Chalcopyrite in Matrix
Chalcopyrite (CuFeS2)
mineral
Bornite (Peacock Ore)
Bornite (Copper iron sulfide - Cu5FeS4)
mineral
Schist (Chlorite or Mica-rich)
Chlorite Schist
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral