Mineral, Often Found In Metamorphic Rocks But Also In Sedimentary And Igneous Rocks

Browse mineral, often found in metamorphic rocks but also in sedimentary and igneous rocks specimens identified by the Rock Identifier community.

Fairy Stone (Staurolite Concretion)

Staurolite (Fe2+2Al9Si4O23(OH))

metamorphic

Sandstone

Arenite (primarily SiO2 - Silicon Dioxide)

sedimentary

Epidote

Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

metamorphic

Quartz Geode Fragment

Silicon Dioxide (SiO2)

mineral

Black Tourmaline (Schorl)

Sodium Iron Aluminum Borosilicate (NaFe2+3Al6(Si6O18)(BO3)3(OH)3OH)

mineral

Sandstone

Arenite (primarily SiO2)

sedimentary

Quartz (Milky or Cloudy Quartz)

Silicon Dioxide (SiO2)

mineral

Milky Quartz

Silicon Dioxide (SiO2)

mineral

Milky Quartz (Water-worn Pebble)

Quartz (Silicon Dioxide) - SiO2

mineral

Carnelian

Carnelian (Silicon Dioxide, SiO2)

mineral

Arfvedsonite (often mistakenly sold as Astrophyllite)

Arfvedsonite [Na3(Fe2+)4Fe3+Si8O22(OH)2]

mineral

Smoky Quartz Cluster

Smoky Quartz (Silicon Dioxide - SiO2)

mineral

Clear Quartz Sphere

Quartz (Silicon Dioxide, SiO2)

mineral

Eclogite

Eclogite (Omphacite-Garnet rock)

metamorphic

Milky Quartz Pebbles

Silicon Dioxide (SiO2)

mineral

Jade

Jade can refer to two distinct minerals: Nephrite (a variety of the mineral actinolite, Ca2(Mg,Fe)5Si8O22(OH)2) and Jadeite (Na(Al,Fe3+)Si2O6). Based on the image, showing a relatively uniform green color and possibly slight translucence in bead form, it is very likely one of these, but determining which one from a photo is difficult without specific testing.

Mineral/Metamorphic Rock (Nephrite or Jadeite)