Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Category
Browse sedimentary (secondary classification for a weathered mineral specimen) specimens identified by the Rock Identifier community.
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Quartz pebble
Silicon Dioxide (SiO2)
Ferruginous Siltstone or Mudstone
Ferruginous Siltstone / Goethitic Sandstone
Limonite
Limonite (Hydrated iron(III) oxide-hydroxide) FeO(OH)·nH2O
Gossanous Sandstone (likely Terrestrial)
Arenite with Iron-Oxide inclusions
Botryoidal Chalcedony (Agate/Carnelian)
Chalcedony (SiO2)
Turquoise (possible Dyed Magnesite/Howlite)
CuAl6(PO4)4(OH)8·4H2O
Limonite (Ironstone)
Limonite (FeO(OH)·nH2O)
Goethite (Iron Ore)
Goethite (FeO(OH))
Limonite (Ironstone)
Limonite (mixture of hydrated iron oxides, primarily Goethite α-FeO(OH))
Limonite (Iron Ore)
FeO(OH)·nH2O
Hematite
Hematite (Iron(III) oxide, Fe2O3)
Turquoise
Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O
Limonite (Iron Ore)
Limonite (an amorphous mixture of hydrated iron oxides, primarily FeO(OH)·nH2O)
Chert (with Quartz Veining)
Microcrystalline Quartz (SiO2)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Limonite (Iron Ore Congcretion)
Limonite (a mixture of hydrated iron(III) oxide-hydroxides, FeO(OH)·nH2O)
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
Quartzite Cobble
Metamorphic Quartzite (SiO2)
Limonite (Gozzany Iron)
Limonite (FeO(OH)·nH2O)
Limonite (Iron-rich Siltstone / Sandstone base)
Hydrous ferric oxide mixture (FeO(OH)·nH2O)
Sandstone
Arenite (SiO2 based)
Agate (Carnelian / Chalcedony)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Greenschist
Greenschist (containing Chlorite, Actinolite, and Epidote)
Quartz (with iron oxide staining)
Silicon Dioxide (SiO2)
Stony-Iron Meteorite (likely Mesosiderite or Ordinary Chondrite)
Meteorite (Silicate-Metal Matrix)
Limonite (Yellow Ochre)
Hydrated iron(III) oxide-hydroxides (FeO(OH)·nH2O)
River Cobble (Diorite or Meta-volcanic with Quartz Veining)
Diorite (with SiO2 quartz veins)
Banded Agate (specifically Gobi Eyes or Eye Agate)
Silicon Dioxide (SiO2) - Variety of Chalcedony
Limonite (Iron Ore)
Hydrous ferric oxides (FeO(OH)·nH2O)
Sandstone (Ferruginous)
Arenite with Iron Oxide cement (SiO2 + Fe2O3)
Limonite and Goethite
Limonite (hydrated iron(III) oxide-hydroxide) and Goethite (α-FeO(OH))
Limonite (Iron Ore)
Hydrated ferric oxide (FeO(OH)·nH2O)
Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
Quartz (Milky/Common Quartz)
Silicon Dioxide (SiO2)
Quartz (Microcrystalline/Gravel)
Silicon Dioxide (SiO2)
Dyed Agate Geode (Pink/Magenta)
Silicon Dioxide (SiO2) - variety of Chalcedony/Quartz
Limonite (Iron Stone/Goethite)
Limonite (mixture of hydrated iron oxides, primarily Goethite: α-FeO(OH))
Yellow Ochre / Limonite
Limonite (FeO(OH)·nH2O)
Limonite (Ironstone Concretion)
Limonite (FeO(OH)·nH2O)