Agate Geode
Silicon Dioxide (SiO2)
mineral
Category
Man Made Rock (Technosol)
Browse man made rock (technosol) specimens identified by the Rock Identifier community.
Learn about Man Made Rock (Technosol) in the encyclopedia
View all →
Wishing Stone with Quartz Veins
Quartzite or Quartz-veined Metamorphic Rock (composed mainly of SiO2)
metamorphic
Basalt with Quartz/Calcite Vein
Amygdaloidal Basalt (matrix) with Mineral Vein filling
igneous
Basalt (Weathered)
Extrusive mafic volcanic rock
igneous
Quartz Vein in Siltstone
Silicon Dioxide (SiO2) within Sedimentary/Metamorphic Matrix
metamorphic
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
sedimentary
Quartz Grain
Silicon Dioxide (SiO2)
mineral
Granite Pebble
Intrusive Igneous Rock
igneous
Granite
Granite
igneous
Granite
Felsic intrusive igneous rock
igneous
Granite
Intrusive Igneous Rock
igneous
Peach Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Rough Apatite in Matrix
Fluorapatite / Chlorapatite / Hydroxylapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Dalmatian Jasper
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
igneous
Quartz Geode
Silicon Dioxide (SiO2) in Geode form
sedimentary
Sandstone or Mudstone
Sedimentary Rock
sedimentary
Conglomerate
Conglomerate Rock
sedimentary
Conglomerate
Conglomerate Rock
sedimentary
Porphyry
Porphyritic Rock
igneous
Conglomerate
Conglomerate rock
sedimentary
Pebble or Cobble (likely composed of sandstone or conglomerate)
Clastic Sedimentary Rock (specific name like sandstone, conglomerate, or breccia would require microscopic analysis of clast size and angularity)
Sedimentary Rock (possibly a conglomerate or coarse-grained sandstone)
Rounded granite or granitic gneiss cobble
Granite; primarily quartz, feldspar, and mica (exact identification requires a fresh surface and testing)
igneous
Rounded sandstone pebble
Quartz-rich sandstone (likely arkosic or lithic sandstone)
sedimentary
Vein Quartz in Basalt or Mafic Rock
Silicon Dioxide (Quartz veins in volcanic host rock)
igneous
Granite and Igneous Rock Collection
Intrusive igneous rock / Granitoid
igneous
Quartz Druzy Geode
Silicon Dioxide (SiO2) - Crystalline Variety
mineral
Sandstone and Conglomerate pebbles
Sedimentary clastic rock
sedimentary
Banded Sandstone (Liesegang Rings)
Sedimentary Arenite (SiO2 with FeO/Fe2O3 impurities)
sedimentary
Shale
Argillaceous Rock
sedimentary
Polished green stone, likely serpentine or altered basalt
Serpentine-group minerals, chiefly Mg₃Si₂O₅(OH)₄; exact identification requires testing
metamorphic
Sedimentary Rock Fragments
Clastic Sedimentary Rock
sedimentary
Basalt with Quartz Veining
Basalt (Mafic Extrusive Igneous Rock) with SiO2 (Silicon Dioxide) veins
igneous
Granite
Intrusive Igneous Rock
igneous
Granite
Intrusive Igneous Rock
igneous
Granite
Intrusive Igneous Rock
igneous
Granite
Phaneritic felsic intrusive igneous rock
igneous
Granite
Felsic intrusive igneous rock
igneous
Granite
Felsic intrusive igneous rock
igneous
Granite
Phaneritic Felsic Intrusive Igneous Rock
igneous
Granite
Intrusive igneous rock
igneous
Granite Pebble
Intrusive Igneous Rock
igneous
Granite
Phaneritic Felsic Igneous Rock
igneous