Milky Quartz Pebble
Quartz (Silicon Dioxide - SiO2)
Category
Browse this appears to be a man made metallic object, likely jewelry, not a natural rock, mineral, or geological specimen. specimens identified by the Rock Identifier community.
Milky Quartz Pebble
Quartz (Silicon Dioxide - SiO2)
Chert (often called Flint or River Stone)
Chert (Microcrystalline Silicon Dioxide, SiO2)
Banded Chert
Chert (a microcrystalline variety of quartz, SiO2 with minor impurities)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Sandstone
Arenite (SiO2 based)
Ruby in Zoisite (Anyolite)
Anyolite (Combination of Corundum and Zoisite)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Jasper and Quartzite mix
Silicon Dioxide (SiO2) with impurities
Limonite (Iron Ore)
Limonite (Hydrous iron(III) oxide-hydroxide mixture, primarily FeO(OH)·nH2O)
Sandstone (Ferruginous)
Arenite (Fe-rich)
Chert (Common Opal/Jasper variety)
Cryptocrystalline Quartz (SiO2)
Shale
Mudstone/Shale
Basalt
Basalt
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
White Moonstone (Scolicite or White Feldspar var. )
Lattice-structure Silicate (KAlSi3O8)
Quartz (Milky or Cloudy variety)
Silicon Dioxide (SiO2)
Granite Pebble
Granite (phaneritic igneous rock)
Fluorite (specifically Rainbow Fluorite or Purple Fluorite)
Calcium Fluoride (CaF2)
Moss Agate
Chalcedony (SiO2) with inclusions of manganese or iron oxides
Banded Calcite (often sold as 'Mexican Onyx' or 'Green Onyx')
Calcite (Calcium Carbonate, CaCO3)
Quartzite Pebble
Quartzite (SiO2 with minor impurities)
Basalt (Weathered/Tumbled)
Extrusive Mafic Igneous Rock
Moonstone
Orthoclase (Potassium aluminum silicate - KAlSi3O8)
Milky Quartz with Iron Inclusions
Quartz (Silicon Dioxide, SiO2)
Limonite with Hematite
Limonite (FeO(OH)·nH2O) and Hematite (Fe2O3)
Chrysoprase
Chrysoprase (a variety of Chalcedony, SiO₂)
Sandstone
Arenite (primarily SiO2)
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
Pyrite (Iron Pyrite)
Iron Disulfide (FeS2)
Amethyst (Tumbled)
Amethyst (Silicon Dioxide with Iron impurities) - SiO2
Magnetite
Magnetite (Fe3O4)
Feldspar (specifically Orthoclase or Plagioclase)
Potassium Aluminum Silicate (KAlSi3O8) or Sodium/Calcium Aluminum Silicate
Sandstone (with manganese staining)
Clastic sedimentary rock (primarily SiO2)
Sandstone (likely Quartzose)
Clastic sedimentary rock (SiO2 primary)
Rough Amethyst Quartz
Silicon Dioxide with Iron impurities (SiO2)
Peridot
Olivine ((Mg, Fe)2SiO4)
Agatized Fossil or Chalcedony Nodule
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
Sandstone (Beach Pebble)
Clastic sedimentary rock (primarily Quartz and Feldspar)
Green Fluorite
Calcium Fluoride (CaF2)
Chert (and Jasper blend)
Chert (Microcrystalline Quartz, SiO2)
Red Jasper (possibly)
Jasper (a variety of Chalcedony, SiO2)