Orthoclase Feldspar with Quartz
Orthoclase (KAlSi3O8)
Category
Browse mineral (silicate variety) specimens identified by the Rock Identifier community.
Orthoclase Feldspar with Quartz
Orthoclase (KAlSi3O8)
Mica Schist
Mica Schist (predominantly Muscovite or Biotite sheet silicates)
Banded Agate
Agate (Cryptocrystalline variety of Silica, SiO2)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Carnelian
Carnelian (Silicon Dioxide - SiO2)
Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Fluorite
Calcium Fluoride (CaF2)
Milk Quartz
Silicon Dioxide (SiO2)
Fluorite (Green)
Fluorite (Calcium Fluoride, CaF2)
Seraphinite
Clinochlore (a variety of the chlorite group)
Pyrite
Iron Sulfide (FeS2)
Pyrite
Iron Disulfide (FeS2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Seraphinite
Clinochlore (Mg,Fe2+)5Al(Si3Al)O10(OH)8
Pyrite
Iron Sulfide (FeS2)
Fluorite (Green Fluorite)
Fluorite (Calcium Fluoride, CaF2)
Quartz (Common Grains)
Silicon Dioxide (SiO2)
Chert (Jasper-like Silicate)
Microcrystalline Quartz (SiO2)
Red Jasper
Silicon dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Pink Feldspar
Potassium Feldspar (KAlSi3O8)
Pyrite
Iron Sulfide (FeS2)
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Pyrite
Iron Disulfide (FeS2)
Clear Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Sardonyx or Carnelian Agate
Silicon Dioxide (SiO2) with iron impurities
Orthoclase Feldspar (Twinning Specimen)
Orthoclase (KAlSi3O8)
Mica Schist
Mica Schist (predominantly Muscovite or Biotite sheet silicates)
Jasper
Silicon dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Assorted Tumbled Gemstones
Mixed oxides and silicates (including Quartz, Chalcedony, and Feldspar variants)
Moonstone
Adularia (orthoclase) or Albite (plagioclase), a potassium aluminum silicate of the feldspar group