Banded Gneiss and Siltstone River Stones
Gneiss (High-grade Metamorphic Rock)
Category
Browse metamorphic or sedimentary depending on local grade specimens identified by the Rock Identifier community.
Banded Gneiss and Siltstone River Stones
Gneiss (High-grade Metamorphic Rock)
Gneiss
High-grade foliated metamorphic rock
Gneiss (Banded Gneiss)
Gneiss
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Gneiss
Gneiss (High-grade regional metamorphic rock)
Gneiss (specifically Granite Gneiss)
Gneiss (High-grade Regional Metamorphic Rock)
Banded Gneiss
Gneiss (Metamorphic Rock)
Quartz (Milky or Clear fragment)
Silicon Dioxide (SiO2)
Gneiss
Gneiss
Gneiss
Gneiss
Greenstone / Graywacke
Metagraywacke or Chlorite Schist
Gneiss (foliated metamorphic rock)
Gneiss
Gneiss
Gneiss
Gneiss
Gneiss
Gneiss
Gneiss
Mica Schist
Mica Schist
Banded Gneiss
Gneiss
Gneiss (specifically a weathered Amphibolite or Garnet Gneiss)
Gneiss (complex silicate composition)
Gneiss (Metamorphic Rock)
Gneiss
Garnet-Bearing Gneiss
Almandine-Garnet Gneiss
Gneiss (specifically Amphibolite Gneiss)
Gneiss
Labradorite (a variety of Feldspar)
Labradorite; (Na,Ca)(Al,Si)4O8 (a plagioclase feldspar)
Granite Gneiss
Gneiss (High-grade metamorphic rock)
Banded Gneiss
Gneiss (High-grade metamorphic rock)
Quartz (Drusy/Crystalline)
Silicon Dioxide (SiO2)
Epidote with Magnetite/Hematite inclusions
Epidote (Ca2(Al2,Fe3+)(SiO4)3(OH)) with Iron Oxides
Schist
Mica Schist
Garnet Schist
Garnet-bearing Mica Schist (variety of compositions, often Al2SiO5 with X3Y2(SiO4)3)
Collection of Minerals and Ores
Various (e.g., Uraninite (U3O8), Carbon (C), Native Gold (Au), Hematite (Fe2O3), Galena (PbS), etc.)
Green Kyanite
Kyanite (Al2SiO5)
Gneiss
Gneiss
Gneiss
Gneiss
Gneiss (specifically a Hornblende Gneiss or Micaceous Gneiss)
Gneiss (metamorphic rock composed primarily of quartz, feldspar, and mafic minerals)
Granitic Gneiss
Gneiss (Metamorphic rock predominantly containing quartz, K-feldspar, and plagioclase)
Gneiss (with Quartzite and Mica)
Gneiss
Gneiss (likely Granitic Gneiss)
Gneiss
Gneiss (Pebble)
Gneiss
Gneiss
Gneiss
Gneiss
Gneiss
Emerald
Beryl (Be₃Al₂Si₆O₁₈), specifically the green variety colored by trace amounts of chromium or vanadium.
Muscovite Schist
Mica Schist (KAl2(AlSi3O10)(OH)2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)