Sandstone (with Feldspathic/Arkose qualities)
Arenite (primarily SiO2 with KAlSi3O8 components)
sedimentary
Category
Sedimentary Rock (Possibly Composed Of Various Minerals)
Browse sedimentary rock (possibly composed of various minerals) specimens identified by the Rock Identifier community.
Learn about Sedimentary Rock (Possibly Composed Of Various Minerals) in the encyclopedia
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Sandstone (specifically Arkose or Ferruginous Sandstone)
Sandstone (SiO2 predominant)
sedimentary
Sandstone
Arenite (Sedimentary rock composed of sand-sized grains, primarily SiO2)
sedimentary
Brick
Fired clay or Ceramic material (no specific mineralogical scientific name as it's a composite)
Man-made material (constructed)
Metal Chain (Likely Steel or a Steel Alloy)
Steel (primarily iron and carbon); specific alloy unknown
Man-made Object (Metal/Alloy)
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Granite
Phaneritic Felsic Igneous Rock
igneous
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (SiO2 based with various mineral cements)
sedimentary
Red Shale
Lutite (primarily composed of Hydrous Aluminum Silicates with Hematite staining)
sedimentary
Quartz
Silicon Dioxide (SiO2)
Mineral
Sandstone
Arenite
Sedimentary
Sandstone (Quartz-rich)
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Sandstone (clastic sedimentary rock, composed predominantly of sand-sized minerals or rock fragments)
Sedimentary Rock
Unidentifiable Rock Fragment
Uncertain
Sandstone (likely Quartzose Sandstone with mineral staining)
Arenite (composed mainly of SiO2)
sedimentary
Limonite Concretion
Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)
sedimentary
Quartz-rich metamorphic rock, likely milky quartz or quartzite
Quartz (SiO₂); possibly quartzite composed predominantly of recrystallized quartz
metamorphic
Sandstone (Quartzite-rich Pebble)
Arenite (composed primarily of SiO2)
sedimentary
Granite
Intrusive Igneous Rock
igneous
Quartz (Float/Abraded)
Quartz (SiO₂)
Mineral
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone Concretion
Clastic Sedimentary Rock - Quartz Arenite / Sandstone
sedimentary
Granitoid (Commonly Granite)
Phaneritic Felsic Igneous Rock
igneous
Sandstone
Sandstone (clastic sedimentary rock)
Rock
Granodiorite
Phaneritic intrusive igneous rock (intermediate composition)
igneous
Sandstone (Ferruginous)
Arenite (with Iron Oxide cement)
sedimentary
Seashell (Calcium Carbonate)
Calcium Carbonate (CaCO3)
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Quartz Arenite (a type of sandstone composed of more than 90% quartz)
Sedimentary Rock
Pebble (likely Sandstone or Granitic Pebble)
Clastic Sediment (or specific rock type, e.g., Arenite, Granitoid Pebble)
Rock (likely Sedimentary)
Not a rock, mineral, or geological specimen
N/A
Possible basalt or iron-rich concretion
Basaltic rock, likely composed mainly of plagioclase and pyroxene; exact identification requires testing
igneous
Beaded Jewelry (Assorted Gemstones)
Various minerals, including but not limited to Quartz (SiO2), Garnet (X3Y2(SiO4)3), Jade (Na(Al,Fe)Si2O6), Amethyst (SiO2),等の多様な組み合わせ
Mineral, Jewelry
Coarse Sandstone
Arenite (SiO2 based)
sedimentary
Red Sandstone
Clastic sedimentary rock (Quartz arenite/Arkose)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (SiO2 dominated)
sedimentary
Seashell Fragment
Calcium Carbonate (CaCO3) in the form of Aragonite or Calcite
mineral
Breciated Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Ferruginous Sandstone
Sandstone, Iron-rich
sedimentary
Shale with Vein Infillings
Shale (a fine-grained clastic sedimentary rock). The veins could be Calcite (CaCO3), Quartz (SiO2), or other minerals.
Sedimentary Rock