Sandstone (Ferruginous)
Arenite (Fe-oxide cemented)
sedimentary
Category
Mineral (Or Mineraloid If Microcrystalline)
Browse mineral (or mineraloid if microcrystalline) specimens identified by the Rock Identifier community.
Sandstone (Grooved/Weathered)
Arenite (composed primarily of Quartz and Lithic fragments)
sedimentary
Sandstone (likely Quartzose type)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (clastic)
Clastic Sedimentary Rock (primarily composed of SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide cement)
sedimentary
Granitoid Pebble (Graphic Granite/Pegmatite)
Pegmatitic Granite with Quartz and Orthoclase
igneous
Quartz (specifically Citrine or Yellow Quartzite pebble)
Silicon Dioxide (SiO2)
mineral
Shale
Fissile Mudstone (Shale)
sedimentary
Sapphire (Raw/Rough)
Corundum (Al2O3)
mineral
Specular Hematite
Hematite (Fe2O3)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Sandstone (likely Arkosic)
Clastic Sedimentary Rock (primarily SiO2 with Feldspar)
sedimentary
Green Aura Quartz (Titanium treated Kyanite or Quartz)
Silicon Dioxide (SiO2) or Aluminum Silicate (Al2SiO5) with Titanium/Metal Oxide coating
mineral (man-made aura treatment)
Sandstone
Arenite (SiO2 based with mineral cement)
sedimentary
Geode (unopened) or Calcareous Nodule
Siliceous or Calcareous Concretion/Nodule
sedimentary
Sandstone
Arenite
sedimentary
Greenschist
Greenschist (Major minerals include Chlorite, Actinolite, and Epidote)
metamorphic
Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Chert / Flint Nodules in Limestone
Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)
sedimentary
Sandstone
Arenite
sedimentary
Quartz (Variety: Citrine or Tumbled Chalcedony)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble (Milky and Gray)
Quartz (Silicon Dioxide, SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Fossilized Wood (with Coal and Limonite)
Petrified Wood (Silicified or Carbonized Flora)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite
sedimentary
Chlorite Included Quartz
Silicon Dioxide (SiO2) with Chlorite (Mg,Fe,Li)6AlSi3O10(OH)8
mineral
Granite with Epidote
Granite, containing quartz, feldspar, and epidote
Igneous
Diamond (Macled/Crystal fragment)
Carbon (C), isometric crystal system
mineral
Basalt with Caliche Crust
Aphanitic Mafic Igneous Rock with Calcium Carbonate (CaCO3) coating
igneous
Druzy Quartz Geode (Vug)
Silicon Dioxide (SiO2)
mineral
Sandstone (Weathered)
Arenite (primarily SiO2)
sedimentary
Fossil Coral (Favosites)
Favosites (Order: Tabulata, Phylum: Cnidaria)
sedimentary
Red Sandstone
Arenite with Hematite (Fe2O3) cement
sedimentary
Hematite
Iron(III) oxide (Fe2O3)
mineral
Sandstone
Arenite (Siliclastic sedimentary rock)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Amber Inlay Jewelry
Fossilized Resin (C10H16O)
Organic Gemstone (Biogenic)
Fossilized Coral (Petoskey-like or Favosites)
Anthozoa (Fossilized Coral)
sedimentary
Pink Halite (Himalayan Salt)
Halite (Sodium Chloride, NaCl)
sedimentary
Sandstone (Ferruginous)
Ferruginous Sandstone (SiO2 with Fe2O3)
sedimentary
Sandstone (with Iron concretions/staining)
Arenite (composed primarily of Quartz and Feldspar with Iron Oxide cement)
sedimentary