Moonstone
Orthoclase (Potassium Aluminum Silicate), Formula: (K,Na)AlSi3O8
Category
Browse mineral side rock specimens identified by the Rock Identifier community.
Moonstone
Orthoclase (Potassium Aluminum Silicate), Formula: (K,Na)AlSi3O8
Sandstone (Wonderstone)
Arenite (composed primarily of SiO2 with Fe2O3 impurities)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)
Sandstone (Banded Sandstone)
Clastic Sedimentary Rock (primarily SiO2 with iron oxide impurities)
Banded Sandstone
Arenite (with iron oxide banding)
Quartz (Milky/Crystalline)
Silicon Dioxide (SiO2)
Quartz Geode (likely within Limestone or Dolomite matrix)
Quartz (SiO₂)
Red Sandstone (with possible iron oxide staining)
Sandstone (primarily Quartz with Hematite/Goethite cement)
Slate with Quartz Vein
Foliated Metamorphic Rock (Mainly Quartz, Muscovite, Chlorite)
Sandstone (Picture Sandstone)
Arenite (primarily SiO2)
Pumice
Pumice (volcanic rock)
Vesicular Basalt (or Scoraceous Basalt)
Basalt (Vesicular texture)
Sandstone Pebble
Arenite (SiO2 complex)
Felsic Drill Core (likely Gneiss or Granite)
Felsic Metamorphic Rock (Gneissic profile)
Shale
Lutaceous sedimentary rock
Geode or Concretion
Silica-filled nodule (likely SiO2)
Sandstone (with Limonite staining)
Arenite (primarily SiO2 with FeO(OH)·nH2O)
Banded Slate or Siltstone with Quartz/Calcite Veins
Protolith-derived Siltstone or Slate (varies based on degree of metamorphism)
Sandstone
Arenite (SiO2 principal)
Quartz in Matrix (possibly Basalt or Siltstone host)
Silicon Dioxide (SiO2) in Host Rock
Shale
Shale (claystone/mudstone)
Wishing Rock (Quartz Vein in Host Rock)
Silicon dioxide (SiO2) vein in various host rocks
Sandstone with Quarzite clasts
Arenite (SiO2 based)
Quartz Geode
Silicon Dioxide (SiO2) in a sedimentary or volcanic host
Sandstone (with potentially high Feldspar/Arkose content)
Clastic sedimentary rock (SiO2 dominated)
Quartz (Druzy on Matrix)
Silicon Dioxide (SiO2)
Conglomerate
Conglomerate (a clastic sedimentary rock)
Biotite (Black Mica)
Biotite - K(Mg,Fe)3AlSi3O10(F,OH)2
Granite
Phaneritic Felsic Igneous Rock
Peach Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
Quartz-veined Mudstone or Argillite
SiO2 (Quartz) in Siltstone/Mudstone matrix
Quartz Geode with Chalcedony
Silicon Dioxide (SiO2) in Geode Form
Fluorite Bracelet (light green beads) and possibly Lavender Jadeite (purple bead)
Fluorite: CaF₂ (Calcium Fluoride); Jadeite: NaAlSi₂O₆ (Sodium Aluminum Silicate)
Sandstone
Arenite (primary component SiO2)
Schist
Schist
Geode (Unopened)
Siliceous Geode (SiO2)
Sandstone
Arenite (primarily SiO2)
Shale
Lutaceous sedimentary rock
Druzy Quartz on Host Rock
Silicon Dioxide (SiO2)
Shale or Slate with Quartz Veins
Shale (fine-grained clastic sedimentary rock) or Slate (low-grade metamorphic rock formed from shale) with Quartz (SiO2) veins
Agate (Common Chalcedony)
Silicon Dioxide (SiO2)
Sandstone
Arenite (SiO2 principal)