Bivalve Fossil (Mussel or Clam Shell)
Bivalvia
fossil
Category
Mineral, Part Of A Rock
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Pink Granite
Phaneritic Felsic Igneous Rock (Granite)
igneous
Pink Granite
Granite (Felsic intrusive igneous rock)
igneous
Note: Item is not a geological specimen
Homo sapiens (Dermal Appendage: Pilus)
Organic / Biological
Granite (Pink/Potassium Feldspar Granite)
Felsic Plutonic Rock (Potassium Feldspar, Quartz, Mica, and Amphibole)
igneous
Granite (Specimen: Logan Rock)
Phaneritic plutonic igneous rock (mainly Quartz, Feldspar, and Mica)
igneous
Granite
Intrusive igneous rock composed mainly of quartz, alkali feldspar, and plagioclase
igneous
Granite
Intrusive Igneous Rock
igneous
Granite
Intrusive Igneous Rock
igneous
Sandstone (Ferruginous)
Sandstone (primarily SiO2 with Fe2O3 cement)
sedimentary
Granite
Phaneritic Plutonic Felsic Rock
igneous
Painted River Rock (likely Quartzite or Granite)
Quartzite or Granitic Gneiss (painted)
metamorphic
Bivalve Fossil (Clam)
Class Bivalvia, likely Mercenaria or similar genus
fossil
Granite
Granite (Felsic Plutonic Rock)
igneous
Pink Granite
Granite (Phaneritic igneous rock rich in Alkali Feldspar)
igneous
Carnelian
Carnelian (Cryptocrystalline Quartz, SiO2)
mineral
Granite
Granite (Felsic Plutonic Rock)
igneous
Granite
Phaneritic plutonic rock (Quartz, Feldspar, Mica)
igneous
Pink Granite
Phaneritic intrusive igneous rock (Felsic)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Granite
Intrusive Felsic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Granite
Granite
igneous
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone (Quartzose Sandstone Pebble)
Arenite (primarily SiO2)
sedimentary
Painted River Rock
Anthropogenic-modified Siliciclastic Sedimentary Rock
Sedimentary
Quartzite River Rock
Quartzite (SiO2)
metamorphic
Epidote
Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
metamorphic
Weathered granite-like rock
Granite, likely biotite-bearing; exact identification is uncertain from the image
igneous
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Granite
Phaneritic Felsic Igneous Rock
igneous
Siltstone with Quartz Vein
Siltstone (primarily SiO2, Al2O3, Fe2O3)
sedimentary
Quartzite
Quartzite (Primary mineral: SiO2)
metamorphic
Peridotite (Pyroxenite/Serpentinized Dunite)
Ultramafic Rock (consisting primarily of Olivine and Pyroxene)
igneous
Sandstone Pebble
Arenite (primarily SiO2)
sedimentary
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Ferruginous Sandstone Pebble
Arenite with Iron-Oxide Cement (SiO2 with Fe2O3/FeO(OH) staining)
sedimentary
Quartz (Milky/Smoky variety on matrix)
Silicon Dioxide (SiO2)
mineral
Granite with Hematite staining
Granitoid (Quartz, Feldspar, Mica) with Iron Oxide (Fe2O3)
igneous
Tumbled brown jasper pebble
Jasper, microcrystalline quartz (SiO₂), commonly with iron-oxide impurities
mineral
Granite
Granite (Phaneritic Quartz-Feldspar Rock)
igneous
Labradorite
(Na, Ca)(Si, Al)4O8
mineral