Mineral, Sediment

Quartz-rich rock, likely quartzite or quartz vein fragment

Quartz (SiO₂), possibly with iron-oxide staining and minor feldspar/mica

Fossilized Shark Tooth or Bone Fragment

Vertebrate Fossil (likely Carcharodon or similar genus)

Bumblebee Jasper

Carbonate-rich volcanic sediment with arsenic and sulfur inclusions

Fossilized Shark Tooth

Selachimorpha fossil (varies by species)

Polychrome Jasper

Silicon Dioxide (SiO2) with impurities

Blue Apatite

Apatite, Ca5(PO4)3(F,Cl,OH)

Rounded iron-rich pebble, likely lateritic sandstone or ferruginous conglomerate fragment

Hematite/goethite-bearing ferruginous sediment; exact identification requires testing

Small marine shell fragment

Calcareous shell, primarily calcium carbonate (aragonite or calcite); exact taxon indeterminate

Biotite-rich schist (probable)

Mica schist, likely biotite–quartz–feldspar schist

Weathered ironstone pebble (likely ferruginous concretion)

Iron-oxide-cemented concretion, commonly hematite (Fe₂O₃) and/or goethite (FeO(OH))

Fossil shell fragment in sedimentary rock

Indeterminate marine mollusk shell; likely a bivalve or gastropod fossil

Yellow Jasper

Silicon Dioxide (SiO2) with iron hydroxides

Polished fossil tooth, likely shark tooth

Fossilized selachian tooth; possibly Otodus or a related lamniform shark

Possible weathered mica-rich metamorphic fragment

Mica schist or phyllite (quartz–mica assemblage; identification uncertain from image)

Fossil scallop shell

Pectinid bivalve fossil; likely a scallop (family Pectinidae), exact genus/species uncertain

Mica Schist or Muscovite

KAl2(AlSi3O10)(OH)2

Polished amber

Amber (fossilized plant resin; commonly succinite, not a mineral)

Weathered iron-rich concretion

Goethite–hematite limonite concretion, likely with quartz and clay minerals

Fossil shark tooth, likely sand tiger shark

Fossilized selachian tooth; possibly *Carcharias* or *Striatolamia*

Trilobite fossil

Trilobita (exact species indeterminable from the image)

Weathered iron-rich mineral concretion

Likely limonite/goethite concretion (hydrated iron oxides), possibly a weathered ironstone fragment

Ammonite fossil

Ammonoidea (coiled cephalopod fossil; exact genus indeterminate)

Yellow-brown jasper (likely iron-stained chert)

Microcrystalline quartz (SiO₂), varieties of chalcedony/chert colored by iron oxides

Fossiliferous Chert Nodule

SiO2 (Microcrystalline Quartz) with fossil inclusions

Likely yellow jasper or iron-stained quartzite pebble

Jasper: microcrystalline quartz (SiO₂), commonly colored by iron oxides; quartzite: recrystallized quartz (SiO₂)

Tumbled jasper pebble

Jasper, an opaque microcrystalline variety of quartz (SiO₂), commonly colored by iron oxides

Red jasper

Microcrystalline quartz (SiO₂), colored mainly by iron oxides

Likely tumbled yellow jasper or iron-rich chert

Microcrystalline quartz (SiO₂), colored by iron oxides

Honey-colored quartz-rich stone, possibly chert or chalcedony

Microcrystalline silica (SiO₂), identification uncertain from photograph

Tumbled orange-and-white jasper or brecciated chalcedony

Microcrystalline quartz (SiO₂), likely iron-oxide-stained jasper; exact variety cannot be confirmed from the image

Red Jasper

Silicon dioxide (SiO2) with hematite (Fe2O3) inclusions

Polished jasper pebble

Microcrystalline quartz (SiO₂), commonly iron-oxide-bearing chert/jasper

Likely milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Small brown quartz-rich pebble, possibly chert or jasper

Microcrystalline quartz (SiO₂), tentative

Possible tumbled jasper or iron-rich chert

Microcrystalline quartz (SiO₂), variably mixed with iron oxides

Tumbled brecciated jasper

Jasper, a microcrystalline quartz variety (SiO₂), with iron-oxide-rich matrix or veining

Red jasper (likely polished/tumbled)

Jasper, an opaque microcrystalline variety of quartz; mainly SiO₂ with iron-oxide inclusions

Tumbled yellow jasper

Jasper, microcrystalline quartz (SiO₂) with iron-oxide inclusions

Rounded quartz-rich pebble

Quartz (SiO₂), possibly milky quartz or quartzite

Polished red jasper (likely brecciated jasper)

Jasper, microcrystalline quartz/chalcedony (SiO₂), colored mainly by iron oxides

Weathered iron-rich concretion (probable limonite/goethite)

Limonite–goethite aggregate, approximately FeO(OH)·nH₂O

Tumbled chalcedony (likely milky quartz)

Chalcedony, cryptocrystalline SiO₂; possibly quartz-rich chert