Small polished pink-and-white mineral pebble
Likely rose quartz or pale pink quartz; exact identification is uncertain from the image
mineral
Category
Man Made Material (Simulated Mineral)
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Polished ocean jasper (orbicular jasper), probable
Microcrystalline quartz (SiO₂), chiefly chalcedony with iron-oxide and other mineral inclusions
mineral
Tumbled brown quartz/chalcedony (probable)
Quartz, SiO₂; possibly brown chalcedony or jasper
mineral
Quartz geode clusters
Microcrystalline quartz (SiO₂), with possible chalcedony and minor iron-oxide staining
mineral
Polished/tumbled calcite
Calcite (calcium carbonate, CaCO₃)
mineral
Slag Glass (Cullet Glass)
Amorphous Silica (Industrial byproduct)
mineral
Olivine (Peridot)
(Mg,Fe)2SiO4
mineral
Black-and-white jasper
Jasper, microcrystalline quartz (SiO₂), with contrasting white mineral inclusions
metamorphic
Likely quartz-rich mineral fragment
Quartz (SiO₂), possibly iron-stained or included quartz
mineral
Sandstone
Clastic sedimentary rock (primarily quartz arenite)
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone
Arenite (SiO2 dominated sandstone)
sedimentary
Botryoidal Chalcedony (Geode fragment)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite
sedimentary
Mammoth or Mastodon Tooth Fragment
Mammuthus / Mammut molar fragment
fossil
Mosasaur Tooth Fossil
Mosasauridae (likely Prognathodon or Mosasaurus)
fossil
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Quartz geode (likely amethyst-bearing)
Silica geode; quartz, SiO₂, with possible amethyst and minor iron oxides
mineral
Likely weathered gray-green stone, possibly serpentinite
Serpentinite (predominantly serpentine-group minerals; identification uncertain from image)
metamorphic
Red Sandstone
Arenite (Iron-rich)
sedimentary
Sandstone
Sedimentary rock composed mainly of quartz sand
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (likely Quartz Sandstone)
Arenite (composed primarily of SiO2)
sedimentary
Sandstone (with Concretion)
Arenite / Quartzose Sandstone
sedimentary
Rough Sapphire (Corundum)
Corundum (Al2O3)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Sunstone
Oligoclase (Plagioclase Feldspar) / (Ca,Na)(Al,Si)4O8
mineral
Chrysocolla in Jasper (Chryso-Jasper)
Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O (Chrysocolla) + SiO2 (Jasper)
mineral
Bicolor Quartz Pebble
Silicon Dioxide (SiO2) with mineral inclusions
mineral
Quartz Pebble
Silicon dioxide (SiO2)
sedimentary
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Chrysocolla in Quartz
Hydrated copper phyllosilicate with silicon dioxide (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O + SiO2)
mineral
Sandstone
Clastic Sedimentary Rock
sedimentary
Rock Fragment with Calcite/Quartz Vein
Polymictic Rock Fragment (SiO2 / CaCO3)
igneous
Weathered granite or granitic gneiss
Granite; primarily quartz, feldspar, and mica (possibly metamorphosed to gneiss)
igneous
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Amygdaloidal basalt (vesicular basalt)
Basalt, commonly containing amygdales of quartz, chalcedony, calcite, or zeolites
igneous
Black Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Milky Quartz (or Bull Quartz)
Silicon Dioxide (SiO2)
mineral
Yellow Ocher (Limonite)
Limonite (Hydrated Iron Oxide) - FeO(OH)·nH2O
mineral
Vesicular basalt (possibly amygdaloidal basalt)
Basalt, chiefly plagioclase feldspar and pyroxene, with possible olivine and secondary mineral infillings
igneous