Mineral Description (Anthropogenic Material)

Citrine

Silicon Dioxide (SiO2) with iron impurities

Polished jasper (likely brecciated or iron-rich jasper)

Microcrystalline quartz (SiO₂), colored by iron oxides/hydroxides and possibly sulfide minerals

Red Sandstone

Arenite (primarily SiO2 with hematite/iron oxide coating)

Banded Gneiss

Gneiss

Greenstone / Greenschist

Greenschist facies metamorphic rock

Chert (Yellow Jasper)

Microcrystalline Quartz (SiO2)

Petrified Wood

Silicified Wood (SiO2)

Metallic sulfide ore, likely pyrite-bearing rock

Pyrite (FeS₂), possibly with chalcopyrite and quartz/host rock

Red jasper pebble

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

Red Sandstone with Reduction Spot

Quartzose Sandstone with a Leach/Reduction Spot

Milky Quartz Pebble

Crystalline Silicon Dioxide (SiO2)

Sandstone

Arenite

Polished amber-colored stone, possibly chert or jasper

Uncertain from image; likely microcrystalline quartz (SiO₂) if chert/jasper

Diamond

Carbon (C)

Diamond (or Cubic Zirconia imitation)

Carbon (C) - Native Element

Goethite / Limonite Concretion

Iron Hydroxide Oxide (FeO(OH))

Sandstone

Arenite (primarily SiO2)

Shale

Argillite / Shaly Mudstone

Sandstone

Arenite (primarily Quartz-rich)

Sandstone

Arenite (SiO2 based)

Sandstone

Clastic sedimentary rock (primarily SiO2)

Polished ocean jasper (orbicular jasper)

Microcrystalline quartz/chalcedony (SiO₂) with iron oxides and assorted alteration minerals

Tumbled jasper or iron-rich chalcedony

Microcrystalline quartz (SiO₂), likely colored by iron oxides

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Polished blue stone, likely sodalite

Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂; possibly blue-dyed jasper or lapis lazuli

Pink quartz-rich stone, likely rose quartz

Rose quartz; quartz, SiO₂, commonly colored by trace elements and microscopic inclusions

Diorite (Salt and Pepper Rock)

Diorite

Diorite

Diorite

Vesicular quartz-rich rock, possibly weathered rhyolite or hydrothermal quartz

Likely quartz (SiO₂) with altered feldspar, iron oxides, and cavities; exact identification requires testing

Tumbled carnelian

Carnelian, a red-orange variety of chalcedony (microcrystalline quartz, SiO₂)

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone (likely Quartzose Sandstone)

Arenite (primarily SiO2)

Sandstone (Ferruginous)

Arenite (Fe-rich SiO2)

Sandstone (Greywacke/Siltstone variant)

Clastic Sedimentary Rock (composed primarily of Quartz SiO2 and Feldspar)

Sandstone (Banded)

Arenite (primarily SiO2)

Tumbled blue-green stone, likely chrysocolla-bearing jasper

Chrysocolla-rich chalcedony/jasper; commonly a mixture of chrysocolla (hydrated copper silicate, variable formula) and quartz (SiO₂)

Orbicular jasper (likely ocean jasper)

Silica-rich microcrystalline quartz/chalcedony with iron-oxide and other mineral inclusions; commonly classified as orbicular jasper

Amygdaloidal Basalt with Agate/Quartz Infill

Basalt with Secondary Silicate Mineralization (SiO2)

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)

Sandstone

Arenite (SiO2 based)

Milky Quartz

Silicon Dioxide (SiO2)

Red Sandstone

Arenite (predominantly Quartz with Hematite cementation)