Pyrite
Iron Sulfide (FeS2)
Category
Browse mineral (specifically, a variety of the mineral species pyrope almandine garnet) specimens identified by the Rock Identifier community.
Pyrite
Iron Sulfide (FeS2)
Quartz (Milky/Clear Quartz)
Silicon Dioxide (SiO2)
White Agate (resembling Bone Chalcedony)
Cryptocrystalline Quartz (SiO2)
Pyrite
Iron Sulfide (FeS2)
Orca Agate (Chalcedony)
Silicon Dioxide (SiO2) with inclusions
Carnelian (Carnelian Agate)
Carnelian (Silicon Dioxide - SiO2)
Carnelian
Carnelian (Silicon Dioxide - SiO2)
Iceland Spar (Optical Calcite)
Calcite (CaCO3)
Carnelian
Carnelian (Silicon Dioxide - SiO2)
Pyrite (Fool's Gold) in Matrix
Iron Sulfide (FeS2)
White Quartz
Silicon Dioxide (SiO2)
Quartz (Milky/Crystal Variety)
Silicon Dioxide (SiO2)
Quartz
Quartz (SiO2, Silicon Dioxide)
Zebra Jasper
Silicon Dioxide (SiO2) with inclusions
Limonite (also known as Yellow Ochre or Brown Hematite)
Limonite (Hydrated iron oxide-hydroxide, FeO(OH)·nH2O)
Amethyst (Chevron Amethyst/Dream Amethyst)
Silicon Dioxide (SiO2) with trace Iron impurities
Cobaltian Calcite (Cobaltoan Calcite)
Cobaltian Calcite (CaCO3 with Co2+ substitution)
Snowflake Obsidian
Vitreous Volcanic Rock (Amorphous Silicate), SiO2
Jasper
Silicon dioxide (SiO2)
Potassium Feldspar
Orthoclase (KAlSi3O8)
Green Onyx (Banded Calcite)
Travertine (CaCO3 - Calcium Carbonate)
Black Tourmaline (Schorl)
Schorl (Na(Fe^2+)3Al6(Si6O18)(BO3)3(OH)4)
Banded Agate (specifically Lake Superior Agate style)
Agate (Cryptocrystalline Quartz), SiO2
Blue Topaz (specifically London Blue or Swiss Blue based on color saturation)
Al2SiO4(F,OH)2 (Aluminum Silicate Fluoride Hydroxide)
Blue Topaz (specifically London Blue shade)
Topaz - Al2SiO4(F,OH)2
Agate (specifically Lace Agate or Banded Agate)
Silicon Dioxide (SiO2)
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3(Si, Al, Fe)2O5(OH)4
Agatized Chert / Chalcedony
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Yellow Chalcedony
Cryptocrystalline Quartz (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Blue Chalcedony
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz (Tumbled/Polished)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silica / Silicon Dioxide - SiO2)
Milky Quartz
Silicon Dioxide (SiO2)