Mixed Quartz and River Pebbles (Stone Collection)
Mixed assortment containing mainly Silicon Dioxide (SiO2)
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Browse igneous, sedimentary, metamorphic, and mineral specimens identified by the Rock Identifier community.
Mixed Quartz and River Pebbles (Stone Collection)
Mixed assortment containing mainly Silicon Dioxide (SiO2)
Mixed Tumbled Gemstones and River Rocks
Mixed Decorative Stones (predominantly Silicon Dioxide - SiO2 variants)
Wishing Rock (Quartz Vein in Host Rock)
Silicon dioxide (SiO2) vein in various host rocks
Magnetite (Lodestone variety)
Magnetite (Fe3O4)
Quartz
Silicon dioxide (SiO2)
Tumbled milky quartz
Quartz (silicon dioxide, SiO₂)
Blue Apatite
Apatite (Group), Ca5(PO4)3(F,Cl,OH)
Milky quartz crystal cluster
Quartz (silicon dioxide, SiO₂)
Likely milky quartz
Quartz (silicon dioxide, SiO₂)
Magnetite
Magnetite (Fe3O4)
Clear Quartz
SiO2 (Silicon Dioxide)
Milky quartz
Quartz (silicon dioxide, SiO₂)
Apatite
Fluorapatite (Ca5(PO4)3F)
Small quartz-rich mineral fragment
Quartz (SiO₂), possibly milky or chalcedonic quartz
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
Clear Quartz
Silicon Dioxide (SiO2)
Magnetite Ore
Magnetite (Fe3O4)
Blue Apatite
Ca5(PO4)3(F,Cl,OH)
Magnetite
Magnetite (Fe3O4)
Orange Calcite
Calcium Carbonate (CaCO3)
Milky quartz
Quartz, silicon dioxide (SiO₂)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Pyrite
Iron Sulfide (FeS2)
Apatite
Fluorapatite / Chlorapatite (Ca5(PO4)3(F,Cl,OH))
Blue Apatite
Calcium Fluorophosphate - Ca5(PO4)3F
Magnetite
Magnetite (Fe3O4)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Blue Apatite
Apatite (Ca5(PO4)3(F,Cl,OH))
Quartz (Pink / Ferruginous)
Silicon Dioxide (SiO2)
Apatite
Ca5(PO4)3(F,Cl,OH)
Apatite
Calcium phosphate fluoride/chloride, Ca5(PO4)3(F,Cl,OH)
Quartz pebble
Silicon dioxide (SiO2)
Mica
Mica group (often Muscovite or Biotite)
Yellow Apatite
Fluorapatite (Ca5(PO4)3(F,Cl,OH))
Apatite
Calcium phosphate fluoride/chloride, Ca5(PO4)3(F,Cl,OH)
Quartz
Silicon Dioxide (SiO2)
Magnetite
Iron(II,III) oxide (Fe3O4)
Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2)
Quartz pebble
Silicon dioxide (SiO2)
Blue Apatite
Fluorapatite (Ca5(PO4)3(F,Cl,OH))
Rough Quartz (Milky / Clear Quartz)
Silicon Dioxide (SiO2)
Blue Apatite
Ca5(PO4)3(F,Cl,OH)