Metamorphic (Low Grade)

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.

Milky Quartz

Silicon Dioxide (SiO2)

Green Quartzite (Aventurine-like)

Quartzite (primarily SiO2 with chromium-rich mica or chlorite inclusions)

Quartz (Milky or Cloudy variety)

Silicon Dioxide (SiO2)

Blue Apatite

Fluoroapatite (Ca5(PO4)3F)

Potassium Feldspar

Orthoclase (KAlSi3O8)

Anthracite Coal

Anthracite (Carbon C)

Quartzite with Iron Mineral Banding

Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3) staining

Serpentinite

Serpentinite (composed primarily of serpentine group minerals like lizardite, chrysotile, or antigorite; Mg3Si2O5(OH)4)

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Shale

Shale (comprised mostly of clay minerals and quartz)

Gneiss (specifically a weathered or stream-worn specimen)

Gneiss (Foliated Metamorphic Rock)

Beryl (Emerald Variety)

Beryllium aluminum silicate (Be3Al2(SiO3)6) with chromium/vanadium traces

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals, (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)

Beryl (var. Heliodor or Aquamarine)

Beryllium Aluminum Cyclosilicate (Be3Al2Si6O18)

Schist/Phyllite

Metamorphic Schist (Chlorite Schist variety)

Mica Schist with Pyrite

Muscovite/Biotite Schist with Iron Sulfide (FeS2)

Tiger's Eye

Pseudomorph of quartz after crocidolite (SiO2 with iron inclusions)

Milky Quartz

Silicon Dioxide (SiO2)

Tiger's Eye (Mineral Collection)

Tiger's Eye (SiO2 with crocidolite inclusions)

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Schist

Mica Schist (primarily Muscovite and Quartz)

Petrified Wood

Silicified Wood (SiO2 - Silicon Dioxide)

Quartzite River Rock with Dendrites

Metamorphosed Quartz-rich Sandstone with Manganese Oxide (MnO2) inclusions

Shale or Slate with Quartz Veins

Shale (fine-grained clastic sedimentary rock) or Slate (low-grade metamorphic rock formed from shale) with Quartz (SiO2) veins

Schist

Schist (primarily mica-schist)

Black Diamond / Black Sapphire

Carbon (C) or Corundum (Al2O3)

Serpentinite

Serpentinite (composed primarily of serpentine group minerals like lizardite, antigorite, and chrysotile)

Pyrite

Iron Sulfide (FeS2)

Kyanite

Kyanite (Al2SiO5)

Peacock Ore

Bornite (Cu5FeS4)

Quartz (Drusy/Crystalline)

Silicon Dioxide (SiO2)

Banded River Rock / Gneiss (highly weathered)

Gneiss

Serpentinite

Serpentinite (composed primarily of minerals in the Serpentine group)

Anthracite Coal

Anthracite

Stichtite in Serpentine (Atlantisite)

Mg6Cr2CO3(OH)16·4H2O (Stichtite) / Mg3Si2O5(OH)4 (Serpentine)

Serpentine with Quartz Vein

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4 with SiO2 veins

Lepidolite

K(Li,Al)3(Si,Al)4O10(F,OH)2

Jade

Jadeite or Nephrite (both are commonly referred to as 'jade'). Jadeite: NaAlSi2O6; Nephrite: Ca2(Mg,Fe)5Si8O22(OH)2.

Jade (Nephrite or Jadeite)

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)