Mineral On Sedimentary

Sandstone and Gravel Aggregate

Clastic Sedimentary Rock / Quartzose Sandstone

Blue calcite (probable)

Calcite, calcium carbonate (CaCO₃)

Yellow Calcite

Calcium Carbonate (CaCO3)

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Shale

Shale (clastic sedimentary rock)

Shale with Siltstone layering

Sedimentary Clastic Rock (Mudstone/Shale)

Milky Quartz

Silicon Dioxide (SiO2)

Mixed Mineral and Fossil Collection

Multi-specimen assemblage (SiO2, CaCO3, FeS2, etc.)

Quartz Crystal

Silicon Dioxide (SiO2)

Sandstone (likely Arkose or Lithic)

Clastic sedimentary rock (primarily SiO2)

Sandstone

Arenite (primarily SiO2)

Sandstone

Arenite (SiO2 composition primarily)

Banded calcite (banded limestone/marble fragment)

Calcite, CaCO₃; likely banded calcitic marble or recrystallized limestone

Weathered granitic cobble

Granite, composed mainly of quartz, feldspar, and mica/amphibole

Banded Sandstone (River Pebble)

Arenite (SiO2 primarily)

Sandstone Pebble

Sedimentary Rock (Quartzose Sandstone)

Sandstone

Sedimentary quartz arenite

Conglomeratic Sandstone

Clastic Sedimentary Rock

Quartz fragment

Silicon Dioxide (SiO2)

Conglomerate

Sedimentary Conglomerate

Jasper and Agate Mix

Silicon dioxide (SiO2) - Microcrystalline Quartz

Weathered sandstone pebble

Quartz-rich sandstone, commonly arkose or lithic sandstone

Shale with Quartz Vein

Argillaceous Shale with Silicon Dioxide Vein

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Shale with Iron Staining

Fissile Argillaceous Sedimentary Rock

Sandstone

Arenite (SiO2 primarily)

Fluorite

Calcium Fluoride (CaF2)

Quartz Geode

Silicon Dioxide (SiO2) in Geode formation

Polished red jasper and carnelian-like stones

Jasper: microcrystalline quartz (SiO₂), commonly colored by iron oxides; translucent piece may be carnelian, a chalcedony variety

Unidentified Dark Mineral or Rock

Indeterminate (Likely Silicon Dioxide or Carbon-based)

Sandstone (Pebble)

Sandstone (principally SiO2 with iron oxide impurities)

Pyrite (likely)

Pyrite, FeS₂

Sandstone

Quartzose Sandstone / Lithic Sandstone

Sandstone

Arenite (primarily SiO2)

Banded gneiss (likely amphibolite-bearing gneiss)

Gneiss; quartz–feldspar–mica/amphibole aggregate

Sandstone

Arenite (primarily SiO2)

Limestone with Fossil Fragment

Sedimentary carbonate rock (CaCO3)

Ironstone Concretion / Chert Nodules

Iron-rich Sedimentary Concretion (Fe2O3 / SiO2 mix)

Epidote

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

Agate

Silicon Dioxide (SiO2)

Goethite/Hematite Nodule

Goethite (FeO(OH)) and Hematite (Fe2O3)

Geode (Quartz / Chalcedony Geode)

SiO2 (Silicon Dioxide)