Schist
Mica Schist
Category
Browse mineral (specifically, a variety of the mineral species pyrope almandine garnet) specimens identified by the Rock Identifier community.
Schist
Mica Schist
Peach Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
Gneiss (specifically a Granitic Gneiss)
Gneiss (typically composed of Quartz, Feldspar, and Mica/Amphiboles)
Bumblebee Jasper
Fossiliferous Volcanic Rock (composed of Calcium Carbonate, Manganese Oxides, and Arsenic Sulfides)
Quartz (Milky Quartz)
Quartz (SiO2 - Silicon Dioxide)
Sandstone Pebble with Iron Staining
Clastic Sedimentary Rock (primarily Quartz with Fe2O3 oxides)
Pegmatitic Granite
Granite with Orthoclase Feldspar and Quartz (SiO2, KAlSi3O8)
Schist
Mica Schist
Hag Stone
Perforated Sedimentary Rock (typically Limestone or Sandstone)
Green Aventurine (Carved)
Silicon Dioxide (Quartz variant) with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O(OH)2)
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
Amazonite
K(AlSi3O8) - Microcline (Var. Amazonite)
Shungite
Shungite (carbon-rich Precambrian mineraloid)
Orange Calcite
Calcium Carbonate (CaCO3)
Orange Calcite
Calcium Carbonate (CaCO3)
Chevron Amethyst
Silicon Dioxide (SiO2) with trace Iron (Fe3+)
Pink Granite
Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Plagioclase)
Labradorite (likely Black Labradorite or Larvikite)
Labradorite (Na,Ca)(Al,Si)4O8. If a rock, it is typically anorthosite, gabbro, or norite, or a variety of syenite called Larvikite if it is specifically from Larvik, Norway.
Sapphire (Corundum variety)
Sapphire (Al₂O₃)
Citrine (likely Heat-Treated Amethyst)
Silicon Dioxide (SiO2)
Larimar
Pectolite (NaCa2Si3O8(OH))
Smoky Quartz
Silicon Dioxide (SiO2)
Citrine
Silicon Dioxide (SiO2) with iron impurities
Ocean Jasper
Silicon Dioxide (SiO2) - Orbicular Jasper / Chalcedony
Citrine Quartz
Citrine (Silicon Dioxide, SiO2)
Shell Cameo (Sardonyx Shell)
Cassis madagascariensis (Sardonyx shell)
Yellow Aventurine
Quartz (SiO2) with iron-bearing inclusions
Sandstone Beach Pebble
Clastic Sedimentary Rock (primarily Quartz with Iron Oxide coating)
Milky Quartz
Silicon Dioxide (SiO2)
Foliated Metamorphic Rock (likely Gneiss or Schist)
Gneissic Metamorphic Rock
Basalt with Amygdaloidal Inclusions
Aphanitic Mafic Volcanic Rock (Basalt)
Quartz Crystal
Silicon Dioxide (SiO2)
Mookaite Jasper
Silicified Radiolarite (SiO2)
Blue Chalcedony
Silicon Dioxide (SiO2)
Ametrine
Ametrine (SiO2 - Silicon Dioxide with varied iron impurities)
Ocean Jasper (Orbicular Jasper)
Silicon Dioxide (SiO2) with iron and magnesium inclusions
Orange Calcite
Calcium Carbonate (CaCO3)
Moss Agate
Silicon Dioxide with inclusions (SiO2 + Fe/Mn/Mg)
Amazonite
Potassium feldspar (Microcline) - K(AlSi3O8)
Limonite after Pyrite (Prophecy Stone)
Limonite (FeO(OH)·nH2O) replacing Pyrite (FeS2)
Red Tiger's Eye beads
Tiger's Eye (variety of Chalcedony, SiO2)
Amazonite
Amazonite / Microcline (KAlSi3O8)