Mixed river-worn rock and mineral collection
Mostly quartz/quartzite, feldspar-bearing granitoid, chert, and mafic volcanic rocks; exact species vary by pebble
igneous, sedimentary, metamorphic, mineral
Category
Igneous And Mineral
Browse igneous and mineral specimens identified by the Rock Identifier community.
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Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Magnetite Ore
Magnetite (Fe3O4)
mineral
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Magnetite (Lodestone variety)
Magnetite (Fe3O4)
mineral
Magnetite
Iron(II,III) oxide (Fe3O4)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Calcite
Calcite (CaCO₃, Calcium Carbonate)
Mineral
Quartz
Silicon dioxide (SiO2)
mineral
Basalt
Basalt
Igneous
Magnetite Sand (Black Sand)
Magnetite (Fe3O4)
mineral
Snowflake Obsidian and Green Aventurine
Volcanic Glass (SiO2 with Cristobalite inclusions) and Quartz (SiO2 with Fuchsite)
igneous and metamorphic
Blue Apatite
Apatite (Group), Ca5(PO4)3(F,Cl,OH)
mineral
Blue Apatite
Ca5(PO4)3(F,Cl,OH)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Granite with Epidote
Granite, containing quartz, feldspar, and epidote
Igneous
Dalmatian Jasper
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
igneous
Pyrite
Iron Sulfide (FeS2)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Magnetite (potentially Hematite)
Magnetite (Fe₃O₄)
mineral
Granite
Granite
igneous
Magnetite
Magnetite (Fe3O4)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Amygdaloidal Basalt with Quartz Veining
Basalt (Extrusive Igneous Rock) with Quartz (SiO2) veining
igneous
Pegmatite
Igneous Pegmatite
igneous
Apatite
Ca5(PO4)3(F,Cl,OH)
mineral
Pyrite or Chalcopyrite specimen (Gold-colored mineral coating)
Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Magnetite (Lodestone)
Iron(II,III) oxide (Fe3O4)
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Magnetite (Octahedral Crystal)
Magnetite (Fe3O4)
mineral
Magnetite / Iron Ore
Magnetite (Fe3O4)
mineral
Chalcopyrite
Copper Iron Sulfide (CuFeS2)
mineral
Unidentified polished mineral specimen
Indeterminate; likely a pale feldspar or quartz-bearing material
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Pegmatite
Igneous Pegmatite
igneous
Galena
Lead Sulfide (PbS)
mineral