Unidentified gray-brown stone
Likely fine-grained quartz–feldspar rock; exact identification is not possible from this close, blurred image
mineral
Category
Igneous, Sedimentary, Metamorphic
Browse igneous, sedimentary, metamorphic specimens identified by the Rock Identifier community.
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Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (Tumbled)
Silicon Dioxide (SiO2)
mineral
Quartz (Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Tumbled Mixed Gemstones and Rocks
Various mineral species including quartz (SiO2) and silicate minerals
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Smoky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Yellow/Orange variety)
Silicon Dioxide (SiO2)
mineral
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Quartz (Smoky/Grey variety)
Silicon Dioxide (SiO2)
mineral
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Feldspar (specifically Orthoclase or Plagioclase)
Potassium Aluminum Silicate (KAlSi3O8) or Sodium/Calcium Aluminum Silicate
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz (Grain)
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Calcium Phosphate (Ca5(PO4)3(F,Cl,OH))
mineral
Clear Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Bornite
Bornite (Cu5FeS4)
mineral
Unidentifiable Rock Fragment
Uncertain
Clear Quartz
SiO2 (Silicon Dioxide)
mineral
Quartz (Milky/Sugar variety)
Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite (locally known as Fool's Gold)
Iron Sulfide (FeS2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Apatite-(CaF), Ca5(PO4)3F
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite in Matrix (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Quartz (Milky or White Quartz)
Silicon Dioxide (SiO2)
mineral