Limonitic Quartzite
Metamorphosed sandstone with Limonite (FeO(OH)·nH2O) staining
Category
Browse metamorphic rock (variety of quartz) specimens identified by the Rock Identifier community.
Limonitic Quartzite
Metamorphosed sandstone with Limonite (FeO(OH)·nH2O) staining
Epidote
Epidote (formula: Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
Black Tourmaline
Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite or Goethite inclusions
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
Quartz
Quartz (SiO2 - Silicon Dioxide)
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
Chalcedony
Silicon Dioxide (SiO2)
Dalmation Stone (often called Dalmatian Jasper)
Antiperthite-rich Microgranite
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Quartzite
Quartzite (primarily SiO2)
Rough Quartz (likely Rose or Smoky variant)
Silicon Dioxide (SiO2)
Clear Quartz Crystal
Silicon Dioxide (SiO2)
Sandstone
Quartz Sandstone (predominantly)
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Smoky Quartz with Calcite/Quartz Veining
Silicon Dioxide (SiO2)
Jasper with Quartz inclusions
Silicon Dioxide (SiO2)
Milky Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
Quartz (Pale Rose or Milky Variety)
Silicon Dioxide (SiO2)
Milky Quartz (Tumbled/Water-worn)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Quartz with Iron Staining
Silicon Dioxide (SiO2) with Limonite/Hematite inclusions
Tiger's Eye (Mineral Collection)
Tiger's Eye (SiO2 with crocidolite inclusions)
Yellow Quartz (Citrine type/Tumbled Quartz)
Silicon Dioxide (SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (composed primarily of Silica, SiO2)
Quartzite Pebble
Quartzite (primarily SiO2)
Quartzite
Quartzite (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz Geode
Silicon Dioxide (SiO2) within a secondary sedimentary structure
Granitic Gneiss
Gneiss (Metamorphic Rock)
Quartz (Smoky/Grey variety)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Granite (specifically the Ubatuba variety)
Phaneritic Igneous Rock (Granodiorite/Monzogranite)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartzite Pebble
Quartzite (SiO2)
Chert / Flint
Microcrystalline Quartz (SiO2)
Green Quartzite (Aventurine variety)
Silicon Dioxide (SiO2) with inclusions of Fuchsite