Minerals

Rose Quartz / Iron-stained Quartz

SiO2 (Silicon Dioxide)

Granitic Pegmatite

Pegmatite containing Quartz, Feldspar, and Muscovite mica

Red weathered granite boulder

Granite, a coarse-grained felsic intrusive igneous rock

Fossilized bone fragment, possibly vertebrate jaw or limb bone

Petrified/fossil bone; taxonomic identification requires microscopy and provenance

Granodiorite

Granodiorite (intermediate plutonic rock)

Blue-green mineral fragment, possibly aquamarine (beryl)

Unconfirmed; aquamarine is blue-green beryl, Be₃Al₂Si₆O₁₈

Likely rough quartz-bearing mineral specimen

Quartz (silicon dioxide, SiO₂), possibly iron-stained quartz or quartz-rich rock

Quartz pebble

Silicon dioxide (SiO2)

White quartz (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

Milky Quartz

Silicon Dioxide (SiO2)

Graphite-rich metamorphic rock (probable graphite schist)

Graphite schist; predominantly graphite (C) with quartz and mica

Weathered quartz-bearing rock, possibly serpentine or altered ultramafic rock

Provisional identification: serpentinite or chlorite–quartz schist; exact composition requires testing

Weathered granite fragment

Granite, chiefly quartz, potassium feldspar, plagioclase, and biotite/hornblende

Quartz fragment (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

Chert (Flint with Iron Staining)

Silicon Dioxide (SiO2)

Gneiss (Banded Gneiss)

Gneiss

Bumblebee Jasper

Carbonate-rich volcanic rock containing Sulfur and Arsenic (Realgar/Orpiment)

Quartz Pebble

Silicon Dioxide (SiO2)

Greenstone

Metabasalt / Greenstone

Unidentified pale mineral or rock specimen

Indeterminate; image quality prevents reliable mineral identification

Not a rock, mineral, or geological specimen

Milky quartz

Quartz (silicon dioxide, SiO₂)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Blue Quartzite

Metamorphic Rock (rich in Quartz, SiO2 with inclusions of Dumortierite or Magnesio-riebeckite)

Quartz pebble

Silicon dioxide (SiO2)

Raw quartz crystal

Quartz (silicon dioxide, SiO₂)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Schist

Mica Schist

Quartz Pebble

Silicon Dioxide (SiO2)

Azurite-Malachite (often called Azerite Malachite or Azurmalachite)

Azurite (Cu3(CO3)2(OH)2) and Malachite (Cu2CO3(OH)2)

Likely pink granite

Granite, a coarse-grained felsic intrusive igneous rock, mainly quartz, feldspar, and mica

Gneiss

Gneiss (quartz-feldspar-biotite gneiss)

Limonite

FeO(OH)•nH2O

Blue Calcite

Calcium Carbonate (CaCO3)

Quartz

Silicon Dioxide (SiO2)

Petrified Wood

Silicified wood (Quartz, SiO2)

Azurite–malachite-bearing quartz or chalcedony

Cu₃(CO₃)₂(OH)₂ azurite with Cu₂CO₃(OH)₂ malachite in SiO₂-rich matrix

Turquoise and Hematite

Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Hematite (Fe2O3)

Fossilized Shark Tooth

Elasmobranchii gen. indet.