Blue Quartzite (Blue Aventurine / Dumortierite Quartz)
Quartzite with inclusions (SiO2 with AlAl4BSi3O18)
metamorphic
Category
Sedimentary Or Metamorphic
Browse sedimentary or metamorphic specimens identified by the Rock Identifier community.
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Quartzite River Pebble
Quartzite (primarily Silicon Dioxide, SiO2)
metamorphic
Schist
Mica Schist (contains muscovite/biotite and quartz)
metamorphic
Serpentine
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3(Si, Al, Fe)2O5(OH)4
metamorphic
Mica Schist
Foliated Metamorphic Rock (Schist)
metamorphic
Mica Schist
Mica Schist (primarily Muscovite or Biotite sheets with Quartz)
metamorphic
Yellow Quartzite
Metamorphic Rock (Mainly SiO2)
metamorphic
Lapis Lazuli
Lazurite-rich metamorphic rock
metamorphic
Glaucophane Schist (Blueschist)
Blueschist facies metamorphic rock
metamorphic
Quartzite Pebble
Metamorphic Quartzite (primarily SiO2)
metamorphic
Quartzite Pebble
Metamorphic Quartzite (primarily SiO2)
metamorphic
Quartzite with inclusions
Metamorphic Rock (Mainly SiO2)
metamorphic
Quartzite
Metamorphic Quartzite (primarily SiO2)
metamorphic
Lapis Lazuli
Lazurite-rich metamorphic rock
metamorphic
Slate
Slate (foliated metamorphic rock)
metamorphic
Slate
Slate (Foliated Metamorphic Rock)
metamorphic
Quartzite Pebble
Metamorphic Quartzite (predominantly SiO2)
metamorphic
Diorite (Gneissic)
Diorite with possible metamorphic foliation
igneous
Quartzite
Metamorphic Quartz Sandstone (SiO2)
metamorphic
Quartzite (River Pebble)
Metamorphic Quartzite (primarily SiO2)
metamorphic
Schist
Schist (Crystalline metamorphic rock)
metamorphic
Quartzite Pebble
Metamorphic Quartzite (primarily SiO2)
metamorphic
Quartzite Pebble
Metamorphic Quartzite (primarily SiO2)
metamorphic
Green Slate (Greenstone)
Metamorphic shale (varied composition)
metamorphic
Quartzite Pebble
Metamorphic Quartzite (primarily SiO2)
metamorphic
Quartzite with Quartz Veining
Metamorphic Quartz Rock (SiO2)
metamorphic
Lapis Lazuli (Fragment)
Lazurite-rich metamorphic rock
metamorphic
Slate
Low-grade Metamorphic Rock
metamorphic
Sandstone Grain
Clastic Sedimentary Rock Grain (SiO2 dominated)
sedimentary
Epidote (or Epidote-rich rock)
Epidote. Mineral formula: Ca2(Al,Fe)3(SiO4)3(OH).
Mineral, often found in metamorphic rocks but also in sedimentary and igneous rocks
Epidote
Epidote Group (e.g., Clinozoisite, Epidote, Piemontite), Epidote formula: Ca2(Al,Fe)3(SiO4)3(OH)
Mineral
Orthoclase Feldspar
Potassium Feldspar (KAlSi3O8)
mineral
Black Tourmaline (Schorl)
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Rainbow Moonstone
White Labradorite (Plagioclase Feldspar), (Na,Ca)(Al,Si)4O8
gemstone
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Quartz/Schist
gemstone
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Spessartine Garnet
Manganese aluminum silicate (Mn2+3Al2(SiO4)3)
mineral
Jadeite (Jade)
NaAlSi2O6 (Sodium Aluminum Silicate)
metamorphic
Milky Quartz with Mica inclusions
Quartz (Silicon Dioxide, SiO2)
mineral
Tiger's Eye
Silicon Dioxide with Crocidolite (SiO2)
mineral
Serpentine
Antigorite/Lizardite (Mg,Fe)3Si2O5(OH)4
metamorphic
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral