Metamorphic Rock (Formed From A Fibrous Crocidolite Asbestos)

Serpentinite

Serpentinite, chiefly serpentine-group minerals (antigorite, lizardite, chrysotile), commonly with magnetite and chromite

Greenstone (likely serpentinite)

Serpentinite, chiefly serpentine-group minerals (Mg₃Si₂O₅(OH)₄), possibly with chlorite or magnetite

Tumbled serpentine (likely bowenite or antigorite)

Serpentine-group minerals, commonly antigorite: Mg3Si2O5(OH)4

Yellow serpentine (likely lemon chrysoprase/serpentine breccia)

Serpentine-group minerals, chiefly antigorite/lizardite; commonly mixed with magnesite and iron oxides

Tumbled serpentine (likely bowenite)

Serpentine-group minerals, chiefly antigorite/lizardite; commonly Mg₃Si₂O₅(OH)₄

Serpentinite (likely serpentinized ultramafic rock)

Serpentinite; chiefly serpentine-group minerals (antigorite, lizardite, chrysotile), commonly with magnetite and relict olivine/pyroxene

Likely serpentine-rich greenstone

Serpentine-group minerals, chiefly antigorite/lizardite; possibly chlorite- or epidote-bearing altered ultramafic rock

Polished tiger’s-eye cabochon

Tiger’s-eye (quartz, SiO₂, with fibrous crocidolite-derived inclusions)

Tumbled tiger’s eye

Quartz (SiO₂) with fibrous riebeckite/crocidolite inclusions

Polished tiger iron

Tiger iron: banded quartz (SiO₂), red jasper, and crocidolite-derived fibrous iron oxides

Serpentinized ultramafic rock (likely serpentinite)

Serpentinite; chiefly antigorite/lizardite/chrysotile, commonly after peridotite (olivine–pyroxene)

Likely greenstone (serpentinized ultramafic rock)

Serpentinite, dominated by serpentine-group minerals (chrysotile/lizardite/antigorite), possibly with chlorite or epidote

Tumbled serpentine-rich stone

Serpentinite, commonly dominated by antigorite, lizardite, or chrysotile

Polished serpentine-rich metamorphic rock

Serpentinite, chiefly serpentine-group minerals (Mg₃Si₂O₅(OH)₄), with possible magnetite, chlorite, or talc

Serpentinite

Serpentinite, composed chiefly of serpentine-group minerals (antigorite, lizardite, chrysotile; approximately Mg₃Si₂O₅(OH)₄)

Serpentine

Serpentinite (rock) containing serpentine minerals (e.g., Antigorite, Lizardite, Chrysotile)

Serpentinized ultramafic rock with magnesite

Serpentinite, chiefly serpentine-group minerals (Mg₃Si₂O₅(OH)₄), with likely magnesite (MgCO₃) and minor chromite/magnetite

Polished golden-brown banded stone, likely tiger’s eye

Tiger’s eye (quartz with fibrous crocidolite pseudomorphs; SiO₂)

Tiger's Eye / Hawk's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Serpentinite

Serpentinite (Mg, Fe, Ni)₃Si₂O―(OH)₄

Likely serpentine pebble

Serpentinite; predominantly serpentine-group minerals, Mg₃Si₂O₅(OH)₄

Serpentinite (likely antigorite-rich)

Serpentine-group minerals, chiefly antigorite: Mg₃Si₂O₅(OH)₄, with possible magnetite, carbonate, and amphibole

Polished red tiger’s-eye (likely)

Quartz pseudomorph after crocidolite; chiefly SiO₂ with iron oxides

Tumbled green-and-white stone, likely serpentine

Serpentinite; chiefly serpentine-group minerals (antigorite, lizardite, or chrysotile), commonly with magnetite and carbonate veins

Polished serpentine pebble

Serpentinite, chiefly serpentine-group minerals (chrysotile, lizardite, antigorite)

Serpentinite

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

Serpentine

Antigorite, Lizardite, or Chrysotile (Mg,Fe)3Si2O5(OH)4

Tumbled serpentine

Serpentinite; chiefly serpentine-group minerals, Mg3Si2O5(OH)4

Serpentinized ultramafic rock (serpentinite)

Serpentinite, dominated by serpentine-group minerals (antigorite, lizardite, chrysotile), commonly with magnetite and relict olivine/pyroxene

Tiger's Eye

Quartz pseudomorph after crocidolite (SiO2)

Tiger's Eye

Silicon dioxide (SiO2) with fibrous inclusions of crocidolite (riebeckite) that have been altered to limonite and then replaced by quartz

Greenstone, likely serpentinite

Serpentinite; chiefly serpentine-group minerals (Mg₃Si₂O₅(OH)₄), possibly with magnetite and chlorite

Blue Quartz (Aventurine)

Silicon Dioxide (SiO2) with Crocidolite or Magnesio-riebeckite inclusions

Dark green-black stone, likely serpentinite

Serpentinite; chiefly antigorite/lizardite/chrysotile group minerals, commonly with magnetite

Actinolite

Ca2(Mg,Fe)5Si8O22(OH)2

Serpentine (likely serpentinite)

Serpentine-group minerals, chiefly antigorite, lizardite, or chrysotile; commonly Mg₃Si₂O₅(OH)₄

Serpentine-rich metamorphic rock (probable serpentinite)

Serpentinite; chiefly antigorite, lizardite, or chrysotile [Mg3Si2O5(OH)4], with possible talc, carbonate, magnetite, and remnant olivine/pyroxene

Serpentine-rich rock (likely serpentinite)

Serpentinite; chiefly serpentine-group minerals (antigorite, lizardite, chrysotile), commonly with magnetite and brucite

Serpentinized ultramafic rock (likely serpentinite)

Serpentinite; chiefly serpentine-group minerals (chrysotile, lizardite, antigorite), with olivine/pyroxene relics and possible magnetite

Serpentine

Serpentinite (Mg,Fe,Ni,Al,Zn)3Si2O5(OH)4

Serpentinite (likely)

Serpentinite; chiefly serpentine-group minerals, Mg₃Si₂O₅(OH)₄, with probable magnetite, carbonate, and altered olivine/pyroxene

Polished tiger’s-eye

Chatoyant quartz (microcrystalline quartz, SiO₂, with fibrous riebeckite/crocidolite pseudomorphs)