Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Category
Metamorphic Or Sedimentary (With Staining)
Browse metamorphic or sedimentary (with staining) specimens identified by the Rock Identifier community.
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Mixed rock and mineral specimen collection
Mostly undetermined from the photograph; apparent quartz-rich rocks, sandstone, granite/gneiss, and possibly iron-oxide-bearing specimens
igneous, sedimentary, metamorphic, mineral
Milky Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral
River Pebble (Quartzite or Chert)
Silicon Dioxide (SiO2)
metamorphic or sedimentary
Quartzite (with Iron Staining)
Metamorphic Quartzite (SiO2)
metamorphic
Polished/tumbled iron-rich jasper (likely brecciated jasper)
Jasper, microcrystalline quartz (SiO₂) colored chiefly by iron oxides/hydroxides
metamorphic
Quartz with Iron Oxide Stain
Silicon Dioxide (SiO2) with Hematite/Limonite coatings
mineral
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
mineral
Gneiss
Metamorphic Gneiss (High-grade regional metamorphism)
metamorphic
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2) with Limonite/Goethite
mineral
Quartz with Iron Stains
Silicon Dioxide (SiO2) with FeOx inclusions
mineral
Yellow Quartzite or Yellow Jasper
Quartzite (primarily SiO2 with Iron oxide staining)
metamorphic
Pyrite-bearing rock (iron pyrite)
Pyrite, FeS₂, likely disseminated or massive in a host rock
mineral
Jasper with Hematite Inclusions
Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3)
sedimentary
Red Quartzite
Quartzite (SiO2)
metamorphic
Quartz (Citrine or Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Quartzite Pebble
Quartzite
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
River Pebble (Grey Quartzite / Sandstone Gravel)
Quartz-rich Sedimentary / Metamorphic River Pebble
sedimentary
Quartz Pebble with Host Rock / Schist Matrix
Silicon Dioxide (SiO2) with Metamorphic Host Rock
sedimentary
Jasper (Green Jasper/River Stone)
Silicon Dioxide (SiO2) with impurities
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz Sand / Sandstone grains
Silicon Dioxide (SiO2)
sedimentary
Quartzite with Iron Inclusions
Metamorphosed Quartz (SiO2)
metamorphic
Clear Quartz Cluster
Crystalline Silicon Dioxide (SiO2)
mineral
Milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Clear Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Dyed Agate
Chalcedony (SiO2)
mineral
Yellow Quartzite River Cobble
Meta-quartzite (SiO2 with iron oxide staining)
metamorphic
Likely graphite-rich schist
Graphitic schist; chiefly graphite and quartz/mica
metamorphic
Mica Schist with Biotite or Muscovite
Metamorphic rock rich in sheet silicates
metamorphic
Feldspar (with Quartz / Iron Staining)
Potassium Feldspar / Plagioclase (KAlSi3O8 - NaAlSi3O8 to CaAl2Si2O8)
mineral
Quartz (specifically Milky Quartz/Quartzite)
Silicon Dioxide (SiO2)
Mineral
Ferruginous Sandstone (River Pebble)
Clastic Sedimentary Rock (Iron-rich)
sedimentary
Limonite stained Sandstone
Sedimentary rock with Goethite/Limonite (FeO(OH)·nH2O)
sedimentary
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Limonite/Hematite)
mineral
Orange Quartzite (River Pebble)
Quartzite (primarily SiO2)
metamorphic
Quartzite with Iron inclusions
Quartzite (SiO2 with Fe2O3 trace impurities)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Gossan (Iron Hat)
Limonitic Gossan (Fe-oxide/hydroxide complex)
igneous
Iron-stained Quartzite
Metamorphic Quartz (SiO2) with limonite/hematite staining
metamorphic
Jasper (Iron-stained Chert)
Silicon Dioxide (SiO2)
sedimentary