Sandstone with Quarzite clasts
Arenite (SiO2 based)
sedimentary
Category
Man Made Rock (Technosol)
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Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Quartz Vein in Host Rock
Quartz (SiO2) in Mafic or Sedimentary Matrix
igneous
Quartz with inclusions (likely Chlorite or Hornblende) and country rock
SiO2 (Quartz) with associated ferromagnesian minerals
Mineral/Igneous/Metamorphic association
Quartz Veined Rock (Likely Graywacke or Quartzite)
Silicon Dioxide (SiO2) veins in Metasedimentary matrix
metamorphic
Granite fragment
Granite
igneous
Yellow Quartzite (River Pebble)
Quartzite (primarily Silicon Dioxide, SiO2)
metamorphic
Quartz in Matrix (possibly Basalt or Siltstone host)
Silicon Dioxide (SiO2) in Host Rock
mineral
Basalt Pebble
Basaltic Igneous Rock
igneous
Basalt
Extrusive Igneous Rock
igneous
Serpentine
Antigorite/Chrysotile group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al,Fe)2O5(OH)4)
metamorphic
Basalt
Afanitic Mafic Basalt
igneous
Basalt with Quartz/Calcite Veins
Aphanitic Mafic Igneous Rock (Hydrothermal Veined)
igneous
Conglomerate
Conglomerate (Detrital Sedimentary Rock)
sedimentary
Vesicular Basalt (Scoria)
Vesicular Basalt
igneous
Migmatite
Migmatite (Mixed metamorphic-igneous rock)
metamorphic
Sandstone with Quartz Veins
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Granite
Granite (Mainly Quartz, Feldspar, and Mica)
igneous
Basalt
Extrusive igneous rock
igneous
Granodiorite or Diorite
Granodiorite / Diorite
igneous
Serpentinite (often called Jade or Nephrite substitute)
Serpentinite (composed primarily of Antigorite, Lizardite, or Chrysotile)
metamorphic
Quartz (Smoky/Granular variety)
Silicon Dioxide (SiO2)
mineral
Botryoidal Chalcedony (Desert Rose / Agate)
Silicon Dioxide (SiO₂)
Mineral variant
Moonstone
Orthoclase (Potassium Aluminum Silicate), Formula: (K,Na)AlSi3O8
mineral
Quartz Vein in Sandstone
Sandstone with Hydrothermal Quartz (SiO2)
sedimentary
Shale
Shale (clastic sedimentary rock)
sedimentary
Granite
Phaneritic Igneous Rock (Granite)
igneous
Basalt (Vesicular or Porphyritic River Pebble)
Mafic Volcanic Rock (Aphanitic to Porphyritic Basalt)
igneous
Greenschist (or Serpentinite) with Quartz-Feldspar Vein
Metabasalt / Greenschist Facies Rock
metamorphic
Quartz pebble
Silicon Dioxide (SiO2)
mineral
Green Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Garnet Gneiss
Garnetiferous Gneiss
metamorphic
Sandstone with Quartz Vein
Arenite with Crystalline Silica (SiO2)
sedimentary
Ferruginous Sandstone (Ironstone)
Arenite with Limonite/Goethite cement
sedimentary
Garnet Schist
Mica Schist with Almandine (Fe3Al2(SiO4)3)
metamorphic
Pumice
Pumice (Amorphous volcanic glass)
Igneous
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Serpentinite
Antigorite, Lizardite, and Chrysotile (Mg3Si2O5(OH)4)
metamorphic
Bauxite (Laterite Clay)
Bauxite (mixture of Hydrous Aluminum Oxides: Gibbsite Al(OH)3, Boehmite and Diaspore AlO(OH))
sedimentary
River Stone (likely Basalt or Greywacke)
Basalt with mineral veining
igneous
Mixed Rock Collection
Polylithic Geological Specimen Mix
sedimentary and igneous