Mineral And Metamorphic Rock

Schist

Crystalline Schist (often containing Muscovite, Biotte, or Quartz)

Veined Pebble (likely a Quartz-Veined Pebble)

Pebble with Mineral Vein (e.g., Quartz Vein in a Chert/Mudstone Pebble)

Green Aventurine (Green Quartzite)

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

Jade

There are two distinct minerals commonly known as Jade: Jadeite (NaAlSi2O6) and Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2). Based on the appearance, these spheres are likely Nephrite.

Blue Quartz (or Blue Aventurine)

Silicon Dioxide (SiO2) with inclusions (typically Crocidolite or Dumortierite)

Smoky Quartz (with possible Garnet inclusions)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Phyllite (possibly low-grade greenish slate)

Foliated metamorphic rock composed mainly of very fine-grained quartz, mica, and chlorite; approximate composition varies and has no single fixed chemical formula

Greenstone

Greenschist-facies basaltic rock

Clear Quartz

Silicon Dioxide (SiO2)

Serpentinite

Serpentinite (group of minerals: Antigorite, Lizardite, Chrysotile)

Quartz (Milky/Crystal Variety)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Milky/Smoky variety on matrix)

Silicon Dioxide (SiO2)

Serpentinite

Serpentinite (composed primarily of mineral group (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4)

Likely foliated metamorphic rock, possibly schist

Mica schist or micaceous quartzite; exact identification is uncertain from the photograph

Gneiss (with Quartz-Feldspar vein)

Gneiss (high-grade metamorphic rock) containing Quartz (SiO2) and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8)

Green Aventurine

Aventurine Quartz (SiO2 with inclusions)

Quartz (Iron-Stained or Milky Quartz)

Silicon Dioxide (SiO2)

Gneiss

Gneiss (High-grade metamorphic rock)

Milky Quartz Pebble

Crystalline Quartz (SiO2)

Oyster shell fragment

Ostreidae shell; primarily calcite (CaCO₃)

Smoky Quartz

Silicon Dioxide (SiO2)

Yellow Agate

Silicon Dioxide (SiO2)

Smoky Quartz Cluster

Smoky Quartz (Silicon Dioxide - SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Mica Schist

Muscovite/Biotite Schist

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Mica Schist

Schist (muscovite-quartz dominant)

Schist

Mica Schist

Quartz Pebble

Silicon Dioxide (SiO2)

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Unakite

Altered Granite (Epidotized Feldspar with Quartz)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Gneiss

Gneiss

Clay Brick

Ceramic structural unit (Al2O3·2SiO2·2H2O as precursor)

Gneiss

Gneiss (High-grade Metamorphic Rock)

Quartz / Quartzite

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Quartz (Silicon Dioxide, SiO2)