Metamorphic Rock (For Nephrite And Some Jadeite); Mineral (For Jadeite)

Browse metamorphic rock (for nephrite and some jadeite); mineral (for jadeite) specimens identified by the Rock Identifier community.

Clear Quartz

Silicon Dioxide (SiO2)

mineral

Iolite-bearing Gneiss (Cordierite)

Cordierite (Mg2Al4Si5O18) in Gneiss matrix

metamorphic

Unakite

Epidote-Feldspar rock

Metamorphic Rock

Quartz (Water-worn pebble)

Silicon Dioxide (SiO2)

mineral

Milky Quartz

Silicon Dioxide (SiO2)

mineral

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

mineral

Granite Gneiss

Gneiss (High-grade regional metamorphic rock)

metamorphic

Moonstone (bead form)

Potassium Aluminum Silicate (KAlSi3O8) - a variety of Orthoclase Feldspar

Mineral

White Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

mineral

Cloud Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

mineral

Banded Iron Formation (BIF) with Quartz

Banded Iron Formation, often composed of alternating layers of hematite (Fe2O3) or magnetite (Fe3O4) and chert (microcrystalline quartz, SiO2)

Sedimentary

Clear Quartz Crystal

Quartz (Silicon Dioxide, SiO2)

mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

mineral

Schist with Quartz/Mica

Mica Schist (primarily Muscovite and Quartz)

Metamorphic

Quartz (Citrine or Iron-Stained variety)

Silicon Dioxide (SiO2)

mineral

Smoky Quartz (Tumbled)

Smoky Quartz (SiO2 - Silicon Dioxide)

mineral

Quartz Pebble (Milky Quartz)

Silicon Dioxide (SiO2)

mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

mineral

Green Aventurine (Green Quartzite)

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

metamorphic

Milky Quartz

Silicon Dioxide (SiO2)

mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

mineral

Rough Emerald/Green Beryl

Beryl (Be3Al2(SiO3)6) with trace amounts of Chromium or Vanadium

mineral

Milky Quartz (with Iron staining)

Silicon Dioxide (SiO2)

mineral

Agate

Silicon Dioxide (SiO2) - Chalcedony variant

mineral

Greenstone / Quartzite Pebble

Metamorphosed Quartz-rich Rock

metamorphic

Labradorite

Labradorite, (Ca, Na)(Al, Si)4O8

mineral

Serpentinite

Serpentinite (complex silicate minerals including Mg3Si2O5(OH)4)

metamorphic

River Quartz Pitting/Cobble

Silicon Dioxide (SiO2)

mineral

Gneiss

Gneiss (High-grade metamorphic rock)

metamorphic

Lapis Lazuli

Na8[Al6Si6O24]n(S,Cl,SO4,OH)2

metamorphic

Gneiss

Gneiss (High-grade Metamorphic Rock)

metamorphic

Serpentinite

Serpentine rock (Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al,Fe)2O5(OH)4

metamorphic

Clear Quartz (Rock Crystal)

Quartz (Silicon Dioxide, SiO2)

mineral

Greenstone / Serpentinite

Serpentinite (composed primarily of minerals from the serpentine group Mg3Si2O5(OH)4)

metamorphic

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals, e.g., Antigorite, Lizardite, Chrysotile)

metamorphic

Zebra Rock / Zebra Marble

Banded Limestone-Marble Transition

metamorphic

Mica Schist

Mica Schist (primarily Muscovite and Quartz)

metamorphic

Peridot (likely, based on color and appearance)

Olivine group mineral, specifically (Mg,Fe)2SiO4 (Forsterite-Fayalite solid solution series)

Mineral

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

metamorphic

Black Marble

Recrystallized Carbonate Rock (CaCO3)

metamorphic

Quartzite River Rock

Quartzite (primarily SiO2)

metamorphic

Quartz in Matrix (possibly with Biotite or Hornblende)

Quartz (Silicon Dioxide, SiO2) in Granitic Matrix

igneous