Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Category
Man Made Metamorphic Style Composite
Browse man made metamorphic style composite specimens identified by the Rock Identifier community.
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Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Quartzite
Metamorphic Quartz Arenite
metamorphic
Tumbled feldspar, likely orthoclase
Potassium feldspar (KAlSi₃O₈), likely orthoclase
mineral
Quartzite
Metamorphic Quartz Rock (SiO2)
metamorphic
Quartzite
Metamorphic Rock (Mainly SiO2)
metamorphic
Red jasper
Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored chiefly by iron oxides
metamorphic
Quartzite (or Quartz Slab)
SiO2 (Silicon Dioxide)
metamorphic
Mica (likely biotite-rich mica aggregate)
Biotite, a potassium–iron–magnesium mica; approximate formula K(Mg,Fe)₃AlSi₃O₁₀(F,OH)₂
mineral
Clay Brick
Ceramic structural unit (Al2O3·2SiO2·2H2O as precursor)
metamorphic (man-made/anthropogenic)
Rounded gray pebble, likely quartzite
Quartzite (predominantly crystalline quartz, SiO₂); identification is tentative from the image
metamorphic
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Quartzite
Metamorphic Quartz Rock (SiO2)
metamorphic
Quartzite
Metamorphic Quartzite (primarily SiO2)
metamorphic
Quartzite
Metamorphic Quartzite (primarily SiO2)
metamorphic
Quartzite
Metamorphic Quartz Rock (SiO2)
metamorphic
Quartzite
Metamorphic Quartz Rock (SiO2)
metamorphic
Green Quartzite
Metamorphic Quartz Sandstone (SiO2)
metamorphic
Tumbled serpentine
Serpentine-group minerals, chiefly antigorite, lizardite, or chrysotile; approximately Mg₃Si₂O₅(OH)₄
metamorphic
Conglomeratic concrete or asphalt aggregate surface with dark bituminous chunks
Polymictic gravel aggregate; dark pieces likely bitumen/asphalt, not a natural rock
sedimentary
Multicolor quartz bead bracelet
Quartz (silicon dioxide, SiO₂); bead colors may be from different varieties or treated quartz
gemstone
Blue slag glass or dyed glass-like industrial material
Amorphous silicate glass; likely copper-bearing blue slag, but possibly colored man-made glass
mineral
White Marble
Recrystallized Calcite (CaCO3)
metamorphic
Tumbled orange-and-white feldspar-rich stone, likely sunstone or orange feldspar
Likely potassium feldspar (orthoclase or microcline), KAlSi₃O₈; exact identification is uncertain from the image
mineral
Muscovite mica
Muscovite, KAl₂(AlSi₃O₁₀)(OH)₂
mineral
Quartzite
Metamorphic Quartz Rock (SiO2)
metamorphic
Quartzite
Metamorphic quartz rock (SiO2)
metamorphic
Quartzite
Metamorphic Quartz Rock (SiO2)
metamorphic
Yellow faceted gemstone, likely citrine or yellow sapphire
Uncertain; probable quartz (SiO₂) or corundum (Al₂O₃)
gemstone
Graphite
Graphite (Carbon, C)
mineral
Tumbled quartzite pebble (likely)
Quartz-rich quartzite; mainly SiO₂
metamorphic
Tumbled quartz-rich pebble
Microcrystalline quartz (SiO₂), possibly milky quartz or quartzite
mineral
Jasper
Silicon dioxide (SiO2) with impurities
sedimentary
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Blue faceted gemstone ring, likely synthetic sapphire or blue topaz
Uncertain from image; possible corundum (Al₂O₃) or topaz (Al₂SiO₄(F,OH)₂)
gemstone
Red Quartzite
Quartzite (Metamorphic quartz sandstone)
metamorphic
Nickel coin (U.S. currency)
Cupronickel (75% Copper, 25% Nickel alloy)
man-made alloy (metallic)
Green Aventurine
Silicon Dioxide (SiO2+KAl2(AlSi3O10)(OH)2)
metamorphic
White Marble
Recrystallized Calcite (CaCO3)
metamorphic
Green stone disk, possibly serpentine or jade
Indeterminate from the photograph; candidates include serpentine-group minerals (approximately Mg₃Si₂O₅(OH)₄) or jadeite jade (NaAlSi₂O₆).
mineral
Greenstone
Metabasalt / Metavolcanic rock
metamorphic
Red Quartzite
Quartzite (Metamorphosed Quartz Arenite)
metamorphic