Quartzite Pebble
Quartzite (Silicon Dioxide: SiO2)
metamorphic
Category
Industrial Byproduct (Anthropogenic Rock)
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Bituminous Coal
Organic Sedimentary Rock (Carbon-based)
sedimentary
Blue sodalite bead necklace
Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂
mineral
Basalt (Road Aggregate Specimen)
Aphanitic mafic volcanic rock
igneous
Pumice
Pumicite
igneous
Basalt
Aphanitic Mafic Igneous Rock
igneous
Limonite (Iron Ore)
Goethite and related iron hydroxides (FeO(OH)·nH2O)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Vein Rock
Silicon Dioxide (SiO2)
mineral
Uncertain small stone; possibly weathered quartz-bearing rock
Indeterminate from image; candidate materials include quartz-rich pebble or altered silicate rock
mineral
Small brown mineral fragment
Unidentified; the image lacks enough detail for a reliable species-level identification
mineral
Weathered iron-rich rock, likely limonite/goethite-bearing laterite
Limonite–goethite aggregate, commonly approximated as hydrated iron oxides (FeO(OH)·nH₂O)
mineral
Weathered stone nodule or concretion
Unidentified lithic concretion; composition cannot be determined from the image
sedimentary
Anthracite coal (likely)
Anthracite; carbon-rich coal composed mainly of maceral vitrinite, with variable mineral impurities
sedimentary
Agate
Silicon dioxide (Chalcedony), SiO2
sedimentary
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Unidentified rough rock fragment
Undetermined; the image does not show enough diagnostic detail for a reliable rock identification
igneous
Quartz geode (likely milky-quartz geode)
Crystalline silicon dioxide, SiO₂; quartz lining a geode cavity
mineral
Chert (Iron-stained)
Chert (SiO2)
sedimentary
Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Vesicular Basalt (Pumice-like)
Vesicular Basalt
igneous
Sandstone (likely Siltstone or Mudstone)
Clastic sedimentary rock (primarily SiO2 with various oxides)
sedimentary
Sandstone / Quartzite
Sedimentary quartz arenite
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Small rounded pebble
Indeterminate; likely a weathered iron-rich silicate rock or concretion
mineral
Shale (Beach-worn)
Laminated Pelite (primarily clay minerals and quartz)
sedimentary
Rounded pebble with a brown mineral or rock inclusion
Unidentified lithic pebble; the pale matrix and brown patch cannot be identified reliably from the image
sedimentary
Basalt (Phaneritic or Diabase)
Mafic Igneous Rock (composed primarily of Pyroxene and Plagioclase Feldspar)
igneous
Vesicular Basalt
Basalt (with vesicular texture)
igneous
Basalt (Vesicular)
Basalt
igneous
Unidentified small rock fragment
Undetermined; the photo does not show enough detail for reliable mineral identification.
igneous
Lava Rock (Basaltic Scoria)
Vesicular Basalt
igneous
Unidentified pink-and-green mineral-bearing rock
Not reliably identifiable from the image; possible pink feldspar with green epidote or another green mineral
mineral
Synthetic Wolf Plush (Non-mineral)
Canis lupus similis (Prop material: Polyester & Synthetic fibers)
Synthetic material/Textile
Pumice
Pumice (Volcanic glass / Felsic igneous rock)
igneous
Quartzite River Stone
Quartzite (SiO2)
metamorphic
Light-colored rounded pebble (possibly quartzite)
Unidentified siliceous rock; quartzite is a plausible but unconfirmed identification
metamorphic
Agate Geode
Silicon dioxide (Chalcedony/Quartz), SiO2
sedimentary
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Likely slag-encrusted ironstone or a small mineralized rock fragment
Unidentifiable from the image; possibly iron-oxide-rich material (hematite/goethite) with adhering dark slag or debris
mineral
Quartz (Druzy on Matrix)
Silicon Dioxide (SiO2)
mineral
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
metamorphic