Mineral Like Industrial Smelting Waste

Smoky Quartz

Smoky Quartz (SiO2: Silicon Dioxide)

Green Fluorite

Calcium Fluoride (CaF2)

Sandstone

Arenite (clastic sedimentary rock)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Geode with Quartz and Chalcedony

Silicon Dioxide (SiO2)

Gneiss

Metamorphic rock of high-grade regional metamorphism

Gneiss (specifically a Granitic Gneiss)

Gneiss (typically composed of Quartz, Feldspar, and Mica/Amphiboles)

Garnet (likely Pyrope or Almandine)

Garnet Group (complex nesosilicate minerals, e.g., Pyrope Mg3Al2(SiO4)3, Almandine Fe3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3, Grossular Ca3Al2(SiO4)3, Andradite Ca3Fe2(SiO4)3, Uvarovite Ca3Cr2(SiO4)3). The vivid red color in the image strongly suggests Pyrope or Almandine.

Quartz River Cobble

Silicon Dioxide (SiO2)

Sunstone (Feldspar variety)

Oligoclase or Andesine (Na,Ca)(Al,Si)4O8

Fluorite Octahedron

Fluorite (Calcium Fluoride, CaF2)

Lepidolite in Quartz (Obelisk)

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lepidolite)

Greenschist (Greenstone)

Chlorite Schist / Greenschist Facies Rock

Milky Quartz

Silicon Dioxide (SiO2)

Iron-stained Quartz

Silicon Dioxide with Iron Oxide (SiO2 with Limonite/Hematite impurities)

Smoky Quartz

Smoky Quartz (Silicon Dioxide, SiO2)

Copper Ore with Chrysocolla and Azurite

Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) / Cu3(CO3)2(OH)2 (Azurite)

Red Sandstone

Quartz Arenite (with Iron Oxide)

Red Sandstone

Arenite (primarily composed of SiO2 with Fe2O3 cement)

Geode (Unopened)

SiO2 (Quartz-filled Sedimentary Nodule)

Quartz (likely Chalcedony or Chert)

Silicon Dioxide (SiO2)

Sandstone (with manganese staining)

Clastic sedimentary rock (primarily SiO2)

Black Obsidian

Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)

Amygdaloidal Basalt with Quartz/Calcite Inclusions

Amygdaloidal Basalt (SiO2 / CaCO3 inclusions)

Aquamarine

Beryl (Be3Al2Si6O18)

Chert (Green variety)

Microcrystalline Quartz (SiO2)

Petrified Wood

Silicified Wood (SiO2 - Quartz/Chalcedony replacement)

Banded Gneiss

Gneiss (Metamorphic high-grade rock)

Gastropod Fossil (Snail Stone or Steinkern)

Class Gastropoda (Calcium Carbonate - CaCO3 / Silica - SiO2 replacing original shell)

Chert (Cream Variety)

Microcrystalline silica (SiO2)

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

Shungite

Shungite (carbon-rich Precambrian mineraloid)

Obsidian

Obsidian (Volcanic Glass) SiO2 (70% or more)

Amber

Succinite (Fossilized Tree Resin)

Oolitic Chert

Silicon Dioxide (SiO2) with Oolitic texture

Greywacke (River Slikenside)

Greywacke (Lithic Sandstone)

Muscovite Mica (with Quartz matrix)

Muscovite - KAl2(AlSi3O10)(OH)2

Schist

Mica Schist (Medium-grade metamorphic rock)

Tree Agate

Dendritic Agate (Silicon Dioxide, SiO2 with chlorite inclusions)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)