Biotite Schist
Biotite Schist (predominantly K(Mg,Fe)3AlSi3O10(OH,F)2)
Category
Browse metamorphic and sedimentary specimens identified by the Rock Identifier community.
Biotite Schist
Biotite Schist (predominantly K(Mg,Fe)3AlSi3O10(OH,F)2)
Quartz (likely Clear Quartz or Rock Crystal)
Quartz (SiO2)
Granite with Epidote
Granite, containing quartz, feldspar, and epidote
Jasper in Rhyolite matrix
Silicon Dioxide (SiO2) with various inclusions in Felsic Igneous matrix
Greenstone / Greenschist
Chlorite schist / Epidiorite
Aventurine (likely Green Aventurine)
Silicon Dioxide (SiO2) with mineral inclusions
Epidote
Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))
Quartzite River Rock
Metamorphic Quartzite (SiO2)
River Cobble (Quartzite or Chert)
Metamorphic Quarzite (SiO2)
Quartzite Pebble
Metamorphic Quartzite (SiO2)
Red Quartzite
Metamorphic Quartzite (SiO2)
Quartzite Cobble
Metamorphic Quartzite (SiO2)
Quartzite (River Stone)
Metamorphic Quartzite (SiO2)
Quartzite Pebble
Metamorphic Quartz (SiO2)
Marble
Metamorphic Limestone (CaCO3)
Quartzite Pebble
Metamorphic Quartzite (SiO2)
Quartzite Pebble
Metamorphic Quartzite (SiO2)
Slate
Foliated Metamorphic Rock
Quartzite
Metamorphic Quartzite (SiO2)
Schist
Schist (metamorphic rock)
Quartzite Cobble with Quartz Vein
Metamorphic Quartzite (SiO2)
Quartzite River Rock
Metamorphic Quartzite (SiO2)
Quartzite (River Pebble)
Metamorphic Quartzite (SiO2)
Quartzite Pebble
Metamorphic Quartz (SiO2)
Quartzite
Metamorphic Sandstone (SiO2)
Quartzite
Metamorphic Quartz (SiO2)
Light Blue Quartzite Pebbles / Decorative Stone
Metamorphic Quartzite (SiO2)
Quartzite
Metamorphic Quartzite (SiO2)
Quartzite Pebbles (Sugar Quartz)
Metamorphic Quartzite (SiO2)
Quartzite pebble
Metamorphic Quartz (SiO2)
Quartzite Cobble
Metamorphic Quartzite (SiO2)
Quartzite (River Pebble)
Metamorphic Quartzite (SiO2)
Quartzite
Metamorphic Quartz (SiO2)
Slate
Foliated metamorphic rock
Gneiss
Gneiss (a metamorphic rock)
Quartzite
Metamorphic Quartz (SiO2)
Quartzite Pebble
Metamorphic Quartz (SiO2)
Fuchsite
Fuchsite (a variety of Muscovite mica, K(Al,Cr)2(AlSi3O10)(OH)2)
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Rhodonite
Rhodonite (MnSiO3)
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety often found as a river rock)
Sapphirine in Matrix
Sapphirine (Mg,Al)8(Al,Si)6O20