Red jasper (likely brecciated jasper)
Jasper, microcrystalline quartz (SiO₂), colored mainly by iron oxides
mineral
Category
Man Made Material (Simulated Mineral)
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Likely quartz-rich metamorphic rock (quartzite or milky quartz)
Quartzite; predominantly quartz (SiO₂), possibly with feldspar and iron-oxide staining
metamorphic
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
mineral
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Polished blue agate/geode slice
Chalcedony (microcrystalline quartz, SiO₂), likely dyed blue
mineral
Polished crescent-shaped stone pendant
Likely black jade, basalt, or other dark silicate stone; exact identification requires testing
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Raw Calcite
Calcium Carbonate (CaCO3)
mineral
Amber
Succinite (C10H16O)
mineraloid
Possible tektite or iron-rich slag-like natural specimen
Uncertain; possibly natural glass (tektite) or magnetite-rich rock
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Fossil Shark Tooth
Chondrichthyes (class)
fossil
Sandstone Pebble
Arenite (SiO2 based)
sedimentary
Limestone with Calcite Crust
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Yellow chalcedony (likely citrine or iron-stained quartz)
Microcrystalline quartz, SiO₂; yellow coloration likely from iron oxides or included quartz varieties
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Quartz geode / iron-stained quartz vein rock
Quartz (SiO₂), likely with iron oxides and minor feldspar or host-rock minerals
mineral
Iron-stained Quartz Pebble
Silicon Dioxide (SiO2) with iron oxide inclusions (Limonite/Goethite)
mineral
Mica-rich metamorphic rock, likely schist
Muscovite–biotite schist, possibly with quartz and feldspar
metamorphic
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Jasper (likely red/brown jasper)
Microcrystalline quartz/chalcedony, SiO₂, colored mainly by iron oxides
mineral
Botryoidal hematite (speculative)
Hematite, iron(III) oxide (Fe₂O₃), possibly mixed with goethite or magnetite
mineral
Slag (Industrial Byproduct)
Ferro-silicate glass (Slag)
Anthropogenic (Man-made industrial deposit)
Diamond Plate (Steel)
Alloyed Carbon Steel or Aluminum with 'Durbar' pattern
not a rock (Man-made industrial metal)
Sea Glass (Uranium/Vaseline Glass variant)
Silicon Dioxide (SiO2) with trace Uranium Oxide (U3O8)
man-made silicate (anthropogenic glass)
Sandstone
Sedimentary Rock (Quartz arenite/Arkose)
sedimentary
Sandstone
Sedimentary Clastic Rock
sedimentary
Asphalt (Bituminous Rock)
Natural bitumen or Bituminous limestone/sandstone
sedimentary
Iron sulfide-rich ore, possibly pyrite-bearing gossan
Likely pyrite (FeS₂) with iron oxides/hydroxides and host rock; exact identification requires testing
mineral
Sandstone (Banded)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Fossil scallop/bivalve shell
Fossilized pectinid bivalve; likely family Pectinidae (exact genus/species cannot be determined from the image)
fossil
Quartz Chip
Silicon Dioxide (SiO2)
mineral
Fossilized Nut / Coprolite / Concretion
Trace Fossil / Permineralized Plant Material
fossil
Greenschist
Greenschist (chlorite schist)
metamorphic
Chalcedony (Chert/Flint)
Silicon Dioxide (SiO2)
sedimentary
Sedimentary Sandstone
Arenite (Sedimentary Rock)
sedimentary
Sandstone
Arenite
sedimentary