Metamorphic (Likely Gneiss Or Schist Based On Texture)

Quartzite Cobble with Iron Staining

Metamorphosed Quartz Sandstone (SiO2)

Fossil Shark Tooth

Carcharodon sp. (likely Otodus or similar Lamniformes order)

Weathered quartz-rich rock, possibly sandstone or quartzite

Likely quartzite (mostly SiO₂), though a granular sandstone is also possible

Dendritic Agate

Chalcedony (SiO2) with manganese/iron oxide inclusions

Amygdaloidal Basalt with Secondary Minerals

Basalt containing secondary mineralization (likely Chlorite, Celadonite, or Zeolites)

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Fuchsite (Green Muscovite / Mica Schist)

Chromian Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)

Fossil Shark Tooth

Otodus sp. (possibly Otodus obliquus)

Black Tourmaline (Schorl)

Sodium Iron Aluminum Borate Silicate (NaFe3Al6(BO3)3Si6O18(OH)4)

Blue Sapphire

Corundum (Al2O3) with traces of Iron and Titanium

Epidote

Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

River Cobble (likely Basalt or Rhyolite)

Extrusive Igneous Rock (Mafic or Intermediate)

Pyrite (Limonite Pseudo-morph after Pyrite)

Iron sulfide (FeS2) transitioning to Iron oxide-hydroxide (FeO(OH)·nH2O)

Likely weathered granite or granitic gneiss fragment

Granite; mainly quartz, feldspar, and mica

Healer's Gold (Pyrite and Magnetite in Schist)

Magnetite (Fe3O4) and Pyrite (FeS2) in Mica Schist

Quartzite

Quartzite (SiO2-rich metamorphic rock)

Aquamarine

Beryl (Be3Al2(SiO3)6)

River Pebble (Likely Chert or Fine-Grained Sandstone/Quartzite)

Siliciclastic clast (likely Chert or Quartzarenite/Quartzite pebble)

Likely weathered basalt or mafic volcanic rock

Basalt; chiefly plagioclase feldspar, pyroxene, and commonly olivine or iron oxides

Granite

Granite (Felsic Plutonic Rock)

Milky Quartz with Fuchsite inclusion

Silicon Dioxide (SiO2) with Chromium-rich Muscovite

Pumice (likely)

Pumice (extrusive igneous rock)

Granite

Granite (Phaneritic Igneous Rock)

Osumilite in Granite Matrix

(K,Na)(Fe,Mg)2(Al,Fe)3(Si,Al)12O30

Limestone with Lichen

Carbonate Sedimentary Rock (primarily CaCO3)

Conglomerate

Conglomeratic Sandstone

Granite cobble

Granite; chiefly quartz (SiO₂), feldspar, and mica/amphibole

Sandstone

Arenite (SiO2 based with primary clasts 0.0625 to 2 mm)

Granite Fragment

Felsic Plutonic Rock (Granite)

Likely weathered quartz-bearing rock (uncertain identification)

Possibly quartz-rich granite or granitic aplite; exact identification requires a clearer, larger image and tests

Fossiliferous Shale

Laminated Mudrock with plant fossils

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO₂)

Garnet-bearing Schist / Conglomerate Specimen

Metamorphic rock with almandine garnet porphyroblasts

Granite or Pegmatite in host rock

Granitoid / Felsic Intrusive Rock

Fossilized Sand Tiger Shark Tooth

Carcharias sp. (likely Carcharias taurus or Striatolamia)

Granite (or Gneiss/Diorite Pebble)

Granite / Granodiorite

Tumbled dark green stone, likely serpentine or greenstone

Serpentinite (hydrated magnesium silicate minerals, chiefly antigorite/lizardite); possible chlorite-rich greenstone

Epidote in Granite Gneiss

Epidote bearing Orthogneiss (Ca2(Al,Fe)3(SiO4)3(OH))

Dark basalt (likely vesicular basalt)

Basalt; chiefly plagioclase feldspar, pyroxene, and commonly olivine (approx. SiO₂ 45–52%)

Fossiliferous Shale or Slate with Plant Fossils

Fossil-bearing argillaceous rock

Banded Agate

Silicon Dioxide (SiO2) - Chalcedony Variety