Metamorphic Rock (Specifically A Rock Composed Of Minerals)

Ruby

Corundum (Al2O3) with Chromium traces

Epidote (Unakite variety)

Epidosite (Metasomatic rock containing Ca2(Al,Fe)3(SiO4)3(OH))

Coquina / Shelly Limestone

Bioclastic Limestone (composed of CaCO3)

Unakite (Epidotized Granite)

Unakite (Rock composed of Epidote Ca2(Al,Fe)3(SiO4)3(OH), Orthoclase KAlSi3O8, and Quartz SiO2)

Collection of Minerals and Ores

Various (e.g., Uraninite (U3O8), Carbon (C), Native Gold (Au), Hematite (Fe2O3), Galena (PbS), etc.)

Banded Gneiss

Gneiss (High-grade regional metamorphic rock)

Mookaite Jasper

Silicon Dioxide (SiO2) - Radiolarite

Mica Schist

Mica Schist (Complex Silicate Rock)

Sandstone (clastic)

Clastic Sedimentary Rock (primarily composed of SiO2)

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Granite

Phaneritic Intrusive Igneous Rock (composed of Quartz, Feldspar, and Mica)

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2)

Milky Quartz Geode or Druzy Quartz

Silicon Dioxide (SiO2)

Sandstone

Arenite (primarily SiO2 - Silicon Dioxide)

Blue Quartzite

Quartzite with inclusions (often Dumortierite or Magnesio-riebeckite), SiO2

Banded Gneiss (with possible weathered sulfide or iron staining)

Gneiss, potentially with iron oxide/hydroxide staining (e.g., limonite) or weathered sulfides

Basalt

Mafic Igneous Rock (composed of plagioclase feldspar and pyroxene)

Chert (varietal: Flint Pitted Pebble)

Cryptocrystalline Quartz (SiO2)

Serpentinite

Serpentine rock (Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al,Fe)2O5(OH)4

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Quartz (on matrix)

Quartz (Silicon Dioxide, SiO₂)

Serpentinite

Serpentinite (complex silicate minerals including Mg3Si2O5(OH)4)

Gneiss

Gneiss (a rock type, not a specific mineral with a formula)

Agate (Carnelian / Chalcedony)

Silicon Dioxide (SiO2)

Conglomerate

Conglomerate (clastic sedimentary rock)

Calcite (likely a tumbled specimen)

Calcite (CaCO 3 )

Agate

Silicon Dioxide (SiO2) - variety of Chalcedony

Mica (Biotite and Muscovite) in Matrix

Potassium aluminum silicate with iron/magnesium (KAl2(AlSi3O10)(F,OH)2 / K(Mg,Fe)3AlSi3O10(F,OH)2)

Unakite

Epidotized Granite

Sandstone (Flagstone)

Arenite (composed primarily of SiO2)

Sandstone

Arenite (composed primarily of SiO2)

Greenstone with Quartz Veining

Epidiorite or Metabasalt with SiO2 (Quartz) veins

Petrified Wood

Silicified Wood (SiO2)

Granite

Granite (Felsic intrusive igneous rock)

Quartzite

Quartzite

Sandstone

Arenite

Quartz in Matrix (possibly with Biotite or Hornblende)

Quartz (Silicon Dioxide, SiO2) in Granitic Matrix

Dacite

Dacite (Intermediate volcanic rock)

Mica Schist

Mica Schist (Intermediate-grade Metamorphic Rock)

Dyed Dalmatian Jasper (Dalmatian Stone)

Perthitic Feldspar with Arfvedsonite inclusions

Blue Apatite

Fluorapatite / Chlorapatite [Ca5(PO4)3(F,Cl,OH)]

Nuummite

Nuummite (Orthorhombic amphiboles: Anthophyllite and Gedrite)