Quartzite River Rock
Quartzite (primarily SiO2)
Category
Browse anthropogenic (man made industrial deposit) specimens identified by the Rock Identifier community.
Quartzite River Rock
Quartzite (primarily SiO2)
Quartzite Cobble
Quartzite (SiO2)
Green Chalcedony (likely Chrysoprase or dyed Green Agate)
Silicon Dioxide (SiO2) with nickel impurities or chromium/dye
Limonite
FeO(OH)·nH2O (Hydrated iron oxide)
Banded Chert
Microcrystalline Quartz (SiO2)
Banded Agate
Agate (Cryptocrystalline variety of Quartz, SiO2)
Jasper with Quartz (Agate/Jasper mix)
Silicon Dioxide (SiO2) with iron oxide inclusions
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Quartz (specifically Citrine or Yellow Quartzite pebble)
Silicon Dioxide (SiO2)
Blue Apatite
Apatite (Group), Ca5(PO4)3(F,Cl,OH)
Flint (within Limestone matrix)
Silicon dioxide (SiO2)
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Quartzite Pebble (Yellow/Cloudy Quartz)
Silicon Dioxide (SiO2) - Recrystallized Sandstone
Fluorite and Red Jasper
Fluorite (Calcium Fluoride, CaF2) and Red Jasper (Silicon Dioxide, SiO2)
Sandstone (Ferruginous)
Arenite (Fe2O3 rich)
Chert / Flint
Microcrystalline Quartz (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Red Jasper
Silicon dioxide (SiO2) with iron oxide inclusions
Aqua Aura Quartz
Titanium/Gold-coated Silicon Dioxide (SiO2)
Hag Stone
Calcareous sedimentary rock (often Chert, Flint, or Limestone)
Basalt with Quartz/Feldspar Inclusions
Amygdaloidal or Porphyritic Mafic Volcanic Rock with Siliceous Veining
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Banded Agate (Chert/Chaldcedony)
Silicon Dioxide (SiO₂)
Limonite (Iron-rich Siltstone / Sandstone base)
Hydrous ferric oxide mixture (FeO(OH)·nH2O)
Pink Marble or Rose Quartz (Likely Pink Marble based on carving texture)
Recrystallized Calcite (CaCO3)
Jasper
Silicon dioxide (SiO2)
Fluorite (Rainbow/Purple Fluorite)
Calcium Fluoride (CaF2)
Chalcedony Nodule (Carnelian/Agate)
Chalcedony (Silicon Dioxide, SiO2)
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
Milk Quartz (Vein Quartz)
Quartz (Silicon Dioxide, SiO2)
Chalcedony (Agate/Chert variety)
Silicon Dioxide (SiO₂)
Rose Quartz
Silicon Dioxide (SiO2)
Jasper
Silicon Dioxide (SiO2) with impurities
White Agate (resembling Bone Chalcedony)
Cryptocrystalline Quartz (SiO2)
Chalcedony (Agate/Blue Quartzite)
Silicon Dioxide (SiO2)
Red Jasper
Jasper (SiO2 with Fe2O3 inclusions)
Banded Agate (Pink/Peach Chalcedony)
Agate (Silicon Dioxide, SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Chalcedony (Smoky Quartz or Agate nodule fragment)
Silicon Dioxide (SiO2)
Milky Quartz (Tumbled Pebble)
Silicon Dioxide (SiO2)
Imperial Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz with Mineral Inclusions
Rhodonite
Manganese Inosilicate (MnSiO3)