Mineral And Metamorphic Rock

Orthoceratid Fossil in Limestone

Orthoceras (extinct genus of Nautiloid Cephalopod)

Nuummite

Nuummite (Orthoamphibole rock / Anthophyllite-Gedrite blend)

Pyrite in Quartz

Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)

Schist

Schist (primarily mica-schist)

Banded Gneiss

Gneiss (Metamorphic high-grade, predominantly SiO2, Al2O3, K2O, Na2O)

Unakite

Unakite (Epidote-Feldspar rock)

Yellow Quartzite (Beach Pebble)

Quartzite (primarily SiO2)

Quartz

Quartz (SiO₂)

Quartz

Quartz (SiO₂)

Serpentinite

Serpentinite (composed largely of serpentine group minerals including Antigorite, Lizardite, or Chrysotile)

Copper-bearing Mica Schist

Mica Schist with Native Copper inclusions

Milky Quartz with Iron Inclusions

Quartz (Silicon Dioxide, SiO2)

Green Druzy Quartz (Prasiolite)

Silicon Dioxide (SiO2) with inclusions (typically Chlorite or Actinolite)

Mica Schist

Mica Schist (primarily Muscovite and Quartz composition)

Pyrite (Fools Gold)

Iron Sulfide (FeS2)

Mica Schist

Mica Schist (Complex Silicate Rock)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Granitic Pegmatite

Pegmatite (composed primarily of Quartz, Feldspar, and Muscovite mica)

Pebble (likely a type of sandstone or quartzite pebble)

Clastic Sediment (specifically, a rudite-sized clast). If the pebble is composed of a specific rock type, its scientific name would be that rock type (e.g., 'Quartzite pebble', 'Granite pebble', 'Chert pebble'). Given its appearance, it is likely a metamorphic quartzite pebble or a hard sandstone pebble.

Slate

Foliated Metamorphic Rock (primarily composed of quartz, illite, chlorite, and micas)

Schist

Mica Schist

Quartzite

Quartzite (primarily SiO2)

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Garnet in Matrix (Eclogite)

Eclogite, featuring Almandine or Pyrope Garnet [X3Y2(SiO4)3]

Quartzite with Iron Hydroxide Staining

Quartzite (primarily SiO2) with Limonite/Goethite staining

Hematite

Iron(III) oxide (Fe2O3)

Schist

Mica Schist (primarily Muscovite or Biotite sheet silicates)

Lapis Lazuli

Lapis Lazuli (a rock composed primarily of Lazurite, Sodalite, Calcite, and Pyrite)

Red Garnet

Garnet Group (e.g., Pyrope, Almandine, Spessartine, Grossular, Andradite, Uvarovite)

Orange Calcite

Calcium Carbonate (CaCO3)

Chrome Diopside

Magnesium Calcium Silicate (MgCaSi2O6) containing Chromium impurities

Granite Gneiss

High-grade regional metamorphic rock (Quartz-Feldspar Gneiss)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)

Granite (Thin Section)

Granite (Felsic Plutonic Rock)

Garnet Beads

Garnet Group (complex nesosilicates, e.g., Almandine Fe3Al2(SiO4)3)

Quartz

Quartz (SiO2 - Silicon Dioxide)

Sulfur (on Matrix)

Native Sulfur (S8)

Dragon Blood Jasper

Epidote with Red Jasper inclusions (SiO2 and Ca2(Al,Fe)3(SiO4)3(OH))

Milky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Gneiss

Gneiss