Mineral And Metamorphic Rock

Drill Core Samples (Varied Lithology)

Multi-lithological core samples (containing potential granite, marble, and phyllite/schist sequence)

Likely quartz-rich metamorphic rock (quartzite or milky quartz)

Quartzite; predominantly quartz (SiO₂), possibly with feldspar and iron-oxide staining

Moonstone

Orthoclase Feldspar (KAlSi3O8)

Pink Granite Gneiss

Gneiss (High-grade metamorphic rock)

Pink-and-white quartz-rich pebble

Quartz (SiO₂), likely massive quartz with iron-oxide staining and possible feldspar inclusions

Pyrite Schist

Metamorphic rock containing FeS2 (Pyrite) with mica and quartz

Quartz fragment (Pebble)

Silicon Dioxide (SiO2)

Clear Quartz (Faceted Crystal)

Silicon Dioxide (SiO2)

Milky quartz

Quartz (silicon dioxide, SiO₂)

Biotite (Black Mica)

Biotite (K(Mg,Fe++)3AlSi3O10(OH,F)2)

Tumbled white quartz pebble

Quartz (silicon dioxide, SiO₂)

Likely banded metamorphic rock, possibly schist or gneiss

Micaceous schist/gneiss; identification is limited from the photograph

Likely garnet-bearing rock fragment

Garnet-bearing schist or gneiss; garnet is commonly almandine, Fe₃Al₂(SiO₄)₃

Orange Calcite

Calcium Carbonate (CaCO3)

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Schist

Mica Schist (Foliated Metamorphic Rock)

Milky quartz pebble

Quartz, silicon dioxide (SiO₂), cryptocrystalline-to-coarse crystalline aggregate

Tumbled Amethyst

Quartz (Silicon Dioxide, SiO2, colored by iron impurities)

Likely biotite-rich schist or gneiss

Mica schist/gneiss; chiefly quartz, feldspar, and biotite mica

Gneiss (Metamorphic Rock)

Gneiss (variable mineral formula primarily containing Quartz, Feldspar, and Mica)

Pyrite-bearing schist or quartzite

Micaceous quartz-rich metamorphic rock with pyrite (FeS₂)

Tiger's Eye

Silicon dioxide (SiO2) with fibrous inclusions of crocidolite

Banded gneiss

Gneiss, commonly quartz–feldspar–mica gneiss

Gneiss

Gneiss (High-grade metamorphic rock)

Tumbled brown tourmaline

Dravite–schorl tourmaline, complex borosilicate; approximate formula Na(Mg,Fe)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄

Garnet Schist

Almandine Garnet in Schist (X3Al2(SiO4)3)

Serpentinite

Serpentinite (composed primarily of Serpentine minerals: Mg3Si2O5(OH)4)

Tumbled Quartz

Silicon Dioxide (SiO2)

Uncertain pale green-gray mineral/rock fragment

Possibly serpentine-bearing rock or greenstone; exact identification requires testing

Gneissic Schist

Gneiss-schist (Metamorphic rock)

Quartz Pebble

Silicon Dioxide (SiO2)

Muscovite Mica Schist

Metamorphic Rock (Muscovite-Biotite Schist)

Lapis Lazuli (Tumbled)

Lazurite-dominated contact metamorphic rock

Weathered quartz-rich metamorphic rock, likely quartzite

Quartzite, composed predominantly of quartz (SiO₂), possibly with feldspar and mica impurities

Weathered quartz-rich metamorphic rock

Likely quartzite or quartz-veined schist; predominantly SiO₂ (quartz) with possible feldspar, mica, and iron-oxide minerals

Banded metamorphic rock, likely gneiss

Banded quartzofeldspathic gneiss (probable paragneiss or orthogneiss)

Quartz-rich metamorphic rock, possibly quartzite

Quartzite; primarily crystalline silicon dioxide (SiO₂), with minor feldspar, mica, or iron oxides

Gneiss Pebble

Gneiss (Metamorphic Foliated Rock)

Quartz (Milky / Clear Quartz Fragment)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Tiger's Eye

Silicon Dioxide with Crocidolite (SiO2)

Unakite

Epidotized Granite