Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Category
Man Made Metamorphic Style Composite
Browse man made metamorphic style composite specimens identified by the Rock Identifier community.
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Quartz with Matrix
Silicon Dioxide (SiO2)
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Magnetite (potentially Hematite)
Magnetite (Fe₃O₄)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Rose Quartz)
Silicon Dioxide (SiO2)
mineral
Spinel
Magnesium aluminum oxide (MgAl2O4)
gemstone
Rose Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Black Agate
Silicon Dioxide (SiO2) with carbon/iron inclusions
sedimentary
Rhodochrosite
Manganese carbonate (MnCO3)
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Light-colored quartz-rich stone, possibly milky quartz
Quartz (SiO₂), provisional identification
mineral
Tumbled quartz pebble
Quartz (silicon dioxide, SiO₂)
mineral
Milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (Pale Rose or Milky Variety)
Silicon Dioxide (SiO2)
mineral
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Milky Quartz
SiO2 (Silicon Dioxide)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Rhodonite
(Mn,Fe,Mg,Ca)SiO3
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Rose Quartz Carving
Quartum roseum (Variety of Quartz, SiO2)
Mineral
Sandstone (likely a river or beach pebble)
Sandstone (a clastic sedimentary rock)
Sedimentary Rock
Magnetite Ore
Magnetite (Fe3O4)
mineral
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Quartzite Pebble
Metamorphic Quartz (SiO2)
metamorphic
Hematite
Iron Oxide (Fe2O3)
mineral
Rhodochrosite
Rhodochrosite, Manganese Carbonate (MnCO3)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Rose Quartz (likely carved)
Rose Quartz (SiO2)
Mineral
Quartz (Quartzite / Iron-stained Quartz)
Silicon Dioxide (SiO2)
mineral
Apatite
Fluorapatite / Chlorapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Granite
Granite (Felsic Plutonic Rock)
igneous
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Granite
Granite (High-silica plutonic rock)
igneous